GEOMAR  Hölz, Sebastian

Dr. rer. nat. Sebastian Hölz

Scientist (Topic 8)
RD 4: Dynamics of the Ocean Floor
RU: Marine Geodynamics

Office:
Room: 8A-202
Phone: +49 431 600 2519
E-Mail: shoelz(at)geomar.de 

Address:
GEOMAR Helmholtz Centre for Ocean Research Kiel
Wischhofstr. 1-3
24148 Kiel

 

Research Focus

  • Controlled source electromagnetics: experimental design & implementation, construction of equipment, data processing and interpretation
  • Investigations of the subseafloor with geophysical methods with special focus on electromagnetic methods
  • Exploration for inactive massive sulfide deposits
  • Exploration for Offshore Groundwater

Projects

  • 2024 – 2027, international = HYDROMOX – Hydrothermal controls on caldera explosivity. International collaboration with partners from UK (NOC, University of Southampton, …), USA, Germany
  • 2021 – 2026, international = SOURCE Project – Offshore Groundwater Resources in a Changing Marine Environment: Continental Shelf Surrounding PEI. International project for offshore groundwater research with 19 partners from Canada, USA, Germany
  • 2024 – 2027, international = PERBAS Project – Permanent sequestration of gigatons of CO2 in continental margin basalt deposits. Joint project with partners from UK, Norway, USA, India and Germany
  • 2023 – 2026, international = ULTRA Project – Investigations of seafloor massive sulfides in ultramafic environments. International collaboration with partners from UK (NOC, University of Southampton, …), USA, Germany, …
  • 2022 – 2024, national = "High CO2 – metabolic responses and bioeconomic opportunities" – Topic Cluster 2 project of Helmholtz Innovation Fond, a joint project between FZJ, GFZ and GEOMAR.
  • 2019, international = CSEM project as part of INSIGHT – Imaging large seismogenic and tsunamigenic structures of the Gulf of Cadiz with ultra-high resolution technologies. Client: CSIC (Consejo Superior de Investigaciones Científicas, Spain)
  • 2018 – 2021, international = Gitaro.JIM – Geophysical Interpretation with target-oriented Joint Inversion Modules (03SX456C), funded as part of the MarTERA ERA-NET Cofunding Scheme.
  • 2014, international = Reconnaissance géophysique du potentiel géothermique de la Zone de Faill de Hockai (dans la région de Malmedy)”. Numéro de convention: 1540026, Client: Government of Wallonia, Belgium
  • 2011, industry = Design study for electromagnetic instrumentation for SMS exploration (AllSeas).

Vita

  • Since 2014 Senior Scientist, GEOMAR | Helmholtz Centre for Ocean Research Kiel
  • 2008-2014 PostDoc, IFM-GEOMAR, now GEOMAR | Helmholtz Centre for Ocean Research Kiel 
  • 2007  PhD (Dr. rer. nat.) TU Berlin, „Geophysical and Geoscientific Investigations in the Ejina Basin, Inner Mongolia, NW China with Focus on Processing of TEM-Data in the Wavelet Domain and on 2D Modeling“, Supervisors: Prof. Burkhardt (TU Berlin); Prof. Weidelt (TU Braunschweig)
  • 2001-2007 Scientist at TU Berlin
  • 2001 Diploma (Dipl.Geophys.) in Geophysics, FU Berlin, Supervisors: Prof. Haak, Dr. Brasse

Publications (OceanRep)

Jump to: Articles in a Scientific Journal - peer-reviewed | Articles in a Scientific Journal - without review | Book chapters | Conference papers | Presentations | Conference posters | Reports - Cruise Reports | Reports - Weekly reports | Reports - Data reports
Number of items: 153.

Articles in a Scientific Journal - peer-reviewed

[thumbnail of 1-s2.0-S0277379125005359-main.pdf] [thumbnail of ScienceDirect_files_28Nov2025_06-49-52.609.zip]

Schulten, I., Maselli, V., King, E. L., Schmidt, M. , Hensen, C. , Müller, T. , Asioli, A., Micallef, A., Berndt, C. , Brown, C. J., Córdoba-Ramírez, F., Elger, J. , Hölz, S. , Kotliarov, A., Kurylyk, B., Yu, S. and Nedimović, M. R. (2026) Post-LGM sedimentation history and deglaciation processes in the southern Gulf of St. Lawrence, Canada. Open Access Quaternary Science Reviews, 372 . Art.Nr. 109715. DOI 10.1016/j.quascirev.2025.109715.

[thumbnail of Geochem Geophys Geosyst - 2023 - Haroon - Automated Seafloor Massive Sulfide Detection Through Integrated Image.pdf] [thumbnail of 2023gc011250-sup-0001-supporting information si-s01.pdf]

Haroon, A. , Paasche, H., Graber, S., Petersen, S. , Attias, E., Jegen, M. , Gehrmann, R., Hölz, S. and Klischies, M. (2023) Automated Seafloor Massive Sulfide Detection Through Integrated Image Segmentation and Geophysical Data Analysis: Revisiting the TAG Hydrothermal Field. Open Access Geochemistry, Geophysics, Geosystems, 24 (12). e2023GC011250. DOI 10.1029/2023GC011250.

[thumbnail of Reeck etal.pdf]

Reeck, K., Jegen, M. , Freudenthal, T., Elger, J. , Hölz, S. , Deusner, C. , Wallmann, K. , Lin, S., Chi, W. C., Bohrmann, G. and Berndt, C. (2023) Quantification of mixed hydrate and free gas concentrations by the joint integration of velocity and conductivity information. Open Access Marine and Petroleum Geology, 158 . Art.Nr. 106569. DOI 10.1016/j.marpetgeo.2023.106569.

[thumbnail of Duan etal.pdf] [thumbnail of 1-s2.0-S0264817221004335-mmc1.docx]

Duan, S., Hölz, S. , Dannowski, A. , Schwalenberg, K. and Jegen, M. (2021) Study on gas hydrate targets in the Danube Paleo-Delta with a dual polarization controlled-source electromagnetic system. Marine and Petroleum Geology, 134 . Art.Nr. 105330. DOI 10.1016/j.marpetgeo.2021.105330.

[thumbnail of Bialas etal.pdf] [thumbnail of Pre-proof]

Bialas, J. , Bohlen, T., Dannowski, A. , Eisenberg-Klein, G., Gassner, L., Gehrmann, R., Heeschen, K., Hölz, S. , Jegen, M. , Klaucke, I. , Krieger, M., Mann, J., Müller, C., Prüßmann, J., Schicks, J., Schünemann, E., Schwalenberg, K., Sommer, M., Smilde, P. L., Spangenberg, E., Trappe, H. and Zander, T. (2020) Joint interpretation of geophysical field experiments in the danube deep-sea fan, Black Sea. Open Access Marine and Petroleum Geology, 121 (Article number 104551). DOI 10.1016/j.marpetgeo.2020.104551.

[thumbnail of 1365-2478.13016(1).pdf]

Haroon, A. , Jegen, M. , Swidinsky, A., Hölz, S. and Tezkan, B. (2020) Step-on versus step-off signals in time-domain controlled source electromagnetic methods using a grounded electric dipole. Open Access Geophysical Prospecting, 68 (9). pp. 2825-2844. DOI 10.1111/1365-2478.13016.

[thumbnail of 1365-2478.12984.pdf]

Reeck, K., Müller, H., Hölz, S. , Haroon, A. , Schwalenberg, K. and Jegen, M. (2020) Effects of metallic system components on marine electromagnetic loop data. Open Access Geophysical Prospecting, 68 . pp. 2254-2270. DOI 10.1111/1365-2478.12984.

Minshull, T. A., Marín-Moreno, H., Betlem, P., Bialas, J. , Buenz, S., Burwicz, E. B. , Cameselle, A. L., Cifci, G., Giustiniani, M. , Hillman, J. I. T., Hölz, S. , Hopper, J. R., Ion, G., León, R., Magalhaes, V., Makovsky, Y., Mata, M. P., Max, M. D., Nielsen, T., Okay, S., Ostrovsky, I., O'Neill, N., Pinheiro, L. M., Plaza-Faverola, A. A., Rey, D., Roy, S. , Schwalenberg, K., Senger, K. , Vadakkepuliyambatta, S. , Vasilev, A. and Vázquez, J. T. (2020) Hydrate occurrence in Europe: A review of available evidence. Marine and Petroleum Geology, 111 . pp. 735-764. DOI 10.1016/j.marpetgeo.2019.08.014.

[thumbnail of Accepted Article] [thumbnail of Berndt_et_al-2019-Journal_of_Geophysical_Research__Solid_Earth.pdf]

Berndt, C. , Chi, W. C. , Jegen, M. , Lebas, E. , Crutchley, G. , Muff, S., Hölz, S. , Sommer, M., Lin, S. , Liu, C. S. , Lin, A. T. , Klaeschen, D. , Klaucke, I. , Chen, L. , Hsu, H. H. , Kunath, P. , Elger, J. , McIntosh, K. D. and Feseker, T. (2019) Tectonic Controls on Gas Hydrate Distribution off SW Taiwan. Open Access Journal of Geophysical Research: Solid Earth, 124 (2). pp. 1164-1184. DOI 10.1029/2018JB016213.

[thumbnail of ggy398.pdf] [thumbnail of ggy398_supplemental_file.pdf]

Haroon, A. , Hölz, S. , Gehrmann, R. A. S. , Attias, E. , Jegen, M. , Minshull, T. A. and Murton, B. J. (2018) Marine dipole–dipole controlled source electromagnetic and coincident-loop transient electromagnetic experiments to detect seafloor massive sulphides: effects of three-dimensional bathymetry. Open Access Geophysical Journal International, 215 (3). pp. 2156-2171. DOI 10.1093/gji/ggy398.

Attias, E., Weitemeyer, K., Hölz, S. , Naif, S., Minshull, T. A., Best, A. I., Haroon, A. , Jegen-Kulcsar, M. and Berndt, C. (2018) High-resolution resistivity imaging of marine gas hydrate structures by combined inversion of CSEM towed and ocean-bottom receiver data. Open Access Geophysical Journal International, 214 (3). pp. 1701-1714. DOI 10.1093/gji/ggy227.

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Safipour, R., Hölz, S. , Jegen, M. and Swidinsky, A. (2017) On electric fields produced by inductive sources on the seafloor. Open Access Geophysics, 82 (6). E297-E313. DOI 10.1190/geo2016-0700.1.

[thumbnail of The use is subject to SEG terms of use and conditions.]

Safipour, R., Hölz, S. , Halbach, J., Jegen, M. , Petersen, S. and Swidinsky, A. (2017) A self-potential investigation of submarine massive sulfides: Palinuro Seamount, Tyrrhenian Sea. Open Access Geophysics, 82 (6). A51-A56. DOI 10.1190/geo2017-0237.1.

[thumbnail of Attias.pdf]

Attias, E., Weitemeyer, K., Minshull, T. A., Best, A. I., Sinha, M., Jegen-Kulcsar, M. , Hölz, S. and Berndt, C. (2016) Controlled-source electromagnetic and seismic delineation of sub-seafloor fluid flow structures in a gas hydrate province, offshore Norway. Open Access Geophysical Journal International, 206 (2). pp. 1093-1110. DOI 10.1093/gji/ggw188.

[thumbnail of Jegen_et_al_Tectonophysics.pdf] [thumbnail of Jegen et.al.pdf]

Jegen, M. , Avdeeva, A., Berndt, C. , Franz, G., Heincke, B., Hölz, S. , Neska, A., Marti, A., Planert, L., Chen, J., Kopp, H. , Baba, K., Ritter, O., Weckmann, U., Meqbel, N. and Behrmann, J. (2016) 3-D Magnetotelluric Image of Offshore Magmatism at the Walvis Ridge and Rift Basin. Open Access Tectonophysics, 683 . pp. 98-108. DOI 10.1016/j.tecto.2016.06.016.

[thumbnail of grl53861.pdf]

Kapinos, G., Weckmann, U., Jegen-Kulcsar, M. , Meqbel, N., Neska, A., Katjiuongua, T. T., Hölz, S. and Ritter, O. (2016) Electrical resistivity image of the South Atlantic continental margin derived from onshore and offshore magnetotelluric data. Open Access Geophysical Research Letters, 43 (1). pp. 154-160. DOI 10.1002/2015GL066811.

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Garcia, X., Seillé, H., Elsenbeck, J., Evans, R. L., Jegen, M. , Hölz, S. , Ledo, J., Lovatini, A., Marti, A., Marcuello, A., Queralt, P., Ranero, C. R. and Ungarelli, C. (2015) Structure of the mantle beneath the Alboran basin from magnetotelluric soundings. Open Access Geochemistry, Geophysics, Geosystems, 16 . pp. 4261-4274. DOI 10.1002/2015GC006100.

[thumbnail of Hölz et.al.pdf]

Hölz, S. , Swidinsky, A., Sommer, M., Jegen, M. and Bialas, J. (2015) The Use of Rotational Invariants for the Interpretation of Marine CSEM Data with a Case Study from the North Alex Mud Volcano, West Nile Delta. Open Access Geophysical Journal International, 201 (1). pp. 224-245. DOI 10.1093/gji/ggv015.

[thumbnail of 1-s2.0-S0098300413001040-main.pdf]

Sommer, M., Hölz, S. , Moorkamp, M., Swidinsky, A., Heincke, B., Scholl, C. and Jegen, M. D. (2013) GPU parallelization of a three dimensional marine CSEM code. Computers & Geosciences, 58 . pp. 91-99. DOI 10.1016/j.cageo.2013.04.004.

[thumbnail of Swidinsky.pdf]

Swidinsky, A., Hölz, S. and Jegen, M. (2012) On mapping seafloor mineral deposits with central loop transient electromagnetics. Open Access Geophysics, 77 (3). E171-184. DOI 10.1190/GEO2011-0242.1.

Articles in a Scientific Journal - without review

[thumbnail of schulten_et_al_2025.pdf]

Schulten, I., Maselli, V., King, E., Schmidt, M. , Hensen, C. , Müller, T. , Asioli, A., Micallef, A. , Berndt, C. , Brown, C., Cordoba Ramirez, F., Elger, J. , Hölz, S. , Kotliarov, A., Kurylyk, B., Yu, S. and Nedimovic, M. (Submitted) Deglaciation history and relative sea level changes since the Last Glacial Maximum in the southern Gulf of St. Lawrence, Canada. Open Access Earth ArXiv . DOI 10.31223/X5SX64.


Safipour, R., Swidinsky, A., Hölz, S. and Jegen, M. (2018) Electrical and electromagnetic methods in exploring for seafloor massive sulfide deposits. SEG Technical Program Expanded Abstracts . pp. 1833-1837. DOI 10.1190/segam2018-2971221.1.


Attias, E., Weitemeyer, K., Minshull, T., Jegen, M. , Hölz, S. , Berndt, C. and Best, A. (2016) Marine CSEM data constrained by seismic and synthetic studies for gas hydrates exploration. SEG Technical Program Expanded Abstracts, 35 . pp. 901-906. DOI 10.1190/segam2016-13407364.1.


Swidinsky, A., Sommer, M., Hölz, S. , Jegen, M. , Berndt, C. and Chi, W. (2014) Electromagnetic imaging of gas hydrate deposits off-shore Taiwan: First results of the Taiflux survey. SEG Technical Program Expanded Abstracts, 2014 . pp. 760-764. DOI 10.1190/segam2014-0100.1.

Book chapters

[thumbnail of Jegen et.al.pdf]

Jegen, M. , Hoelz, S. , Swidinsky, A., Sommer, M., Berndt, C. and Chi, W. C. (2015) SO227 Electromagnetic and seismic investigation of methane hydrates offshore Taiwan - The Taiflux Experiment. Open Access In: Tagungsband Statusseminar Meeresforschung mit FS SONNE 2015. . Projektträger Biologie, Energie, Ökologie, Rostock-Warnemünde, pp. 118-126.

[thumbnail of Geological_Society,_London,_Special_Publications-2011-Hartmann-221-33.pdf]

Hartmann, K., Wünnemann, B., Hölz, S. , Krätschell, A. and Zhang, H. (2011) Neotectonic constraints on the Gaxun Nur inland basin in north–central China, derived from remote sensing, geomorphology and geophysical analyses. In: Growth and Collapse of the Tibetan Plateau. ; 353 , ed. by Gloaguen, R. and Ratschbacher, L.. GSL Special Publications . Geological Society Publ. House, Bath, UK, pp. 221-233. ISBN 978-1-86239-326-4

Conference papers

[thumbnail of Electromagnetic_oceans2014.pdf]

Jegen, M. , Hölz, S. , Swidinsky, A., Sommer, M., Berndt, C. and Chi, W. (2014) Electromagnetic and Seismic Investigation of Methane Hydrates Offshore Taiwan – The Taiflux Experiment. [Paper] In: Oceans 2014. , 07.-10.04.2014, Taipei, China . OCEANS 2014 - TAIPEI . .

Presentations

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Maselli, V., Schulten, I., King, E., Asioli, A., Schmidt, M. , Hensen, C. , Müller, T. , Micallef, A. , Berndt, C. , Brown, C. J., Cordoba-Ramirez, F., Elger, J. , Hölz, S. , Kotliarov, A., Kurylyk, B., Michael, H., Robert, K., Yu, S. and Nedimovic, M. (2025) Impact of ice sheet dynamics and short-lived climate oscillations on the late Quaternary stratigraphy and paleo-environments of the Gulf of St. Lawrence off Prince Edward Island (Canada. Open Access [Talk] In: EGU General Assembly 2025. , 27.04.2025-02.05.2025, Vienna, Austria / online .

[thumbnail of Abstract]

Schulten, I., Maselli, V., Hensen, C., King, E., Schmidt, M. , Müller, T. , Micallef, A. , Berndt, C. , Brown, C. J., Cordoba-Ramirez, F., Elger, J. , Hölz, S. , Kotliarov, A., Kurylyk, B., Michael, H., Robert, K., Yu, S. and Nedimovic, M. (2025) Can offshore groundwater flow within shelf sediments generate fluid deformation structures?. Open Access [Talk] In: EGU General Assembly 2025. , 27.04.2025-02.05.2025, Vienna, Austria / online .


Haroon, A. , Paasche, H., Graber, S., Petersen, S. , Attias, E., Jegen, M. , Gehrmann, R., Hölz, S. and Klischies, M. (2024) Integrated Image Segmentation and Geophysical Data Analysis at the TAG Hydrothermal Field. [Talk] In: AGU Fall Meeting 2024. , 09.-13.12.2024, Washington DC, USA .


Hölz, S. , Cordoba-Ramirez, F., Yeo, I. and Murton, B. (2024) Geophysical Investigations with the Marine Transient Electromagnetic System MARTEMIS at the Semyenov Hydrothermal Complex. [Talk] In: AGU Fall Meeting 2024. , 09.-13.12.2024, Washington DC, USA .


Jegen, M. , Franz, G., Avdeeva, A., Hölz, S. , Neska, A., Wollatz-Vogt, M., Kopp, H. and Hannington, M. D. (2024) Back-Arc Rifting in the Eastern Lau Basin – a Magnetotelluric Study of the Nascent Fonualei Rift System. [Talk] In: AGU Fall Meeting 2024. , 09.-13.12.2024, Washington DC, USA .

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Haroon, A. , Attias, E., Gustafson, C., Key, K., Evans, R., Jegen, M. , Hölz, S. and Schwalenberg, K. (2021) Hydro-geophysical investigations using controlled-source electromagnetic methods in near-coastal environments . Open Access [Invited talk] In: Joint Scientific Assembly IAGA-IASPEI 2021. , 21.-27.08.2021, Virtual Conference .


Gehrmann, R. A. S., North, L. J., Graber, S., Szitkar, F., Petersen, S. , Haroon, A. , Hölz, S. , Minshull, T. A., Jegen, M. and Murton, B. J. (2019) Metal sulphide occurrence at the Mid-Atlantic Ridge: An interdisciplinary case study. [Talk] In: 27. IUGG General Assembly 2019. , 08.07.-18.07.2019, Montreal, Canada .


Haroon, A. , Hölz, S. , Gehrmann, R. A. S. , Reeck, K., Attias, E. , Jegen, M. and Minshull, T. A. (2019) Marine dipole–dipole controlled source electromagnetic and coincident-loop transient electromagnetic experiments to detect seafloor massive sulphides: effects of three-dimensional bathymetry. [Talk] In: IUGG Centennial Meeting. , 08.07.-18.07.2019, Montreal, Canada .


Haroon, A. , Hölz, S. and Jegen, M. (2019) Recent developments in TD-CSEM Inversion for shallow seafloor exploration. [Talk] In: EMTF Meeting 2019. , 23.09.-27.09.2019, Haltern am See, Germany .


Hölz, S. , Haroon, A. , Reeck, K., Faghih, Z., Galley, C., Sinnecker, T., Rodriguez, N., Martins, S. and Barnscheidt, K. C. (2019) The Search for Hidden Seafloor Massive Sulfides Along the Arctic Mid-Ocean Ridges. [Talk] In: EMTF Meeting 2019. , 23.09.-27.09.2019, Haltern am See, Germany .


Hölz, S. , Haroon, A. , Reeck, K., Petersen, S. , Safipour, R. and Jegen, M. (2019) Detection of buried seafloor massive sulfides with the MARTEMIS TEM system. [Talk] In: Prospectors and Developers Meeting 2019. , 06.03.2019, Toronto, Canada .


Jegen, M. and Hölz, S. (2019) New exploration challenges and instrument systems in marine EM. [Invited talk] In: MARELEC 2019. , 22.10.-25.10.2019, Marine Biological Laboratory, Woods Hole, USA .


Petersen, S. , Hannington, M. D., Hölz, S. , Krätschell, A., Klischies, M. , Graber, S., Anderson, M. O., Jamieson, J., Grant, H. and Murton, B. J. (2019) Same, same, but different: recent advances in our understanding of modern seafloor hydrothermal systems. [Talk] In: 15. Biennal SGA Meeting 2019. , 27.-30.08.2019, Glasgow, UK .


Gehrmann, R. A. S., Graber, S., Szitkar, F., Petersen, S. , Hölz, S. , Morton, M., Haroon, A. , Ollington, B., Minshull, T. A., Jegen, M. D. , North, L., Gil, A., Tan, Y. Y., Attias, E., Schroeder, H., Bialas, J. and Murton, B. (2018) Massive sulphide exploration at the Mid-Atlantic Ridge 26°N: an interdisciplinary geophysical study. [Talk] In: Geological Society of London – William Smith Meeting. , 03.07.2018, London, England .


Gehrmann, R. , Morton, M. , Haroon, A. , North, L. , Tan, Y. , Graber, S., Szitkar, F. , Hoelz, S. , Petersen, S. , Minshull, T. and Murton, B. (2018) Massive sulphide exploration with controlled source electromagnetics at the Mid-Atlantic Ridge. [Talk] In: Marine Minerals: A New Resource for the 21st Century?. , 31.10.-1.11.2018, The Geological Society, London, England .


Haroon, A. , Hölz, S. , Weymer, B. , Tezkan, B. and Jegen, M. (2018) Calculating Time-Domain Controlled Source Electromagnetic Signals with MARE2DEM. [Talk] In: 3. Applied Shallow Marine Geophysics Conference. , 09.-13.09.2018, Porto, Portugal . DOI 10.3997/2214-4609.201802663.


Hölz, S. , Haroon, A. , Reeck, K., Petersen, S. , Safipour, R. and Jegen, M. (2018) Detection of Buried Seafloor Massive Sulfides with the transient electromagnetic system MARTEMIS. [Invited talk] In: PDAC Convention 2018. , 03.03.-06.03.2018, Toronto, Canada .


Hölz, S. , Haroon, A. , Reeck, K. and Jegen, M. (2018) MARTEMIS – A New EM Tool for the Detection of Buried Seafloor Massive Sulfides. [Talk] In: 24. International EM Induction Workshop. , 13.-20.08.2018, Helsingør, Denmark .


Schwalenberg, K., Gehrmann, R., Hölz, S. and Zander, T. (2018) Marine CSEM gas hydrate studies in the Danube Delta, Western Black Sea. [Talk] In: 24. International EM Induction Workshop. , 13.-20.08.2018, Helsingør, Denmark .

[thumbnail of Marcan EGU_2018.pdf] [thumbnail of Abstract]

Weymer, B. A. , Jegen, M. , Schwalenberg, K., Hölz, S. , Faghih, Z., Duan, S., Micallef, A. and Mountjoy, J. (2018) Mapping offshore freshwater aquifers using marine controlled-source electromagnetics: Canterbury Basin, New Zealand. Open Access [Talk] In: EGU General Assembly 2018. , 08.-13.04.2018, Vienna, Austria .


Yeo, I., Murton, B., Lusty , P., Petersen, S. , Gil, A., Lehrmann, B., Dutrieux, A., Stobbs, I., Gehrmann, R., Hoelz, S. and Jegen, M. (2018) An integrated approach to assessing seafloor massive sulphide deposits. [Talk] In: Marine Minerals: A New Resource for the 21st Century?. , 31.10.-1.11.2018, The Geological Society, London, England .


Gehrmann, R., Graber, S., Szitkar, F., Petersen, S. , Hölz, S. , North, L., Jegen, M. , Gil, A., Vardy, M., Schröder, H., Bialas, J. , Tan, Y. Y., Attias, E., Sommer, M., Minshull, T. and Murton, B. (2017) Massive sulphide exploration at the Mid-Atlantic Ridge 26°N: an integrated geophysical study. [Talk] In: AGU Fall Meeting 2017. , 11.12 - 15.12.2017, New Orleans, USA .


Gehrmann, R., Hölz, S. , North, L., Szitkar, F., Graber, S., Yeo, I., Petersen, S. , Jegen, M. , Gil, A., Vardy, M., Schröder, H., Bialas, J. , Tan, Y. Y., Attias, E., Sommer, M., Minshull, T. and Murton, B. (2017) Results from CSEM experiments at the Mid-Atlantic Ridge (TAG area, 26°N) and integration with geophysical data. [Talk] In: EMTF Conference. , 25.-29.09.2017, Breklum, Germany .


Gehrmann, R., Hölz, S. , North, L., Szitkar, F., Graber, S., Yeo, I., Petersen, S. , Jegen, M. , Gil, A., Vardy, M., Schröder, H., Bialas, J. , Tan, Y. Y., Attias, E., Sommer, M., Minshull, T. and Murton, B. (2017) Results from CSEM experiments at the Mid-Atlantic Ridge (TAG area, 26 degrees N) and integration with geophysical data. [Talk] In: 27. Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung. , 25.-29.09.2017, Breklum, Germany .


Gehrmann, R. , Tan, I. , Minshull, T. , Ollington, B. , Attias, E. , North, L. , Hölz, S. , Sommer, M., Jegen, M. , Szitkar, F., Graber, S., Petersen, S. , Schröder, H., Bialas, J. , Gill, A. , Vardy, M. and Murton, B. (2017) Massive sulphide exploration with controlled source electromagnetics at the Mid-Atlantic Ridge. [Talk] In: MARELEC 2017 . , 27.-30.06.2017, Liverpool, UK .


Haroon, A. , Hölz, S. and Jegen, M. (2017) Marine TEM measurements in the workarea 3-Mounds (Mid Atlantic Ridge, TAG area). [Talk] In: 27. Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung. , 25.-29.09.2017, Breklum, Germany .


Hölz, S. and Jegen, M. (2017) Messungen mit dem TEM Spulensystem „MARTEMIS“ am mittelatlantischen Rücken in der Umgebung des TAG Hydrothermalfeldes. [Talk] In: DGG Annual Meeting 2017. , 27.-30.03.2017, Potsdam, Germany .


Hölz, S. and Jegen, M. (2017) Mapping seafloor ore deposits in the Tyrhennian Sea with a new time-domain coincident loop system. [Talk] In: MARELEC 2017. , 27.06.-30.06.17, Liverpool, UK .

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Hölz, S. , Duan, S., Li, G., Schwalenberg, K. and Jegen, M. (2017) Investigations on gas hydrate occurrences in the Western Black Sea with the Sputnik controlled source electromagnetic system. Open Access [Talk] In: DGG Annual Meeting 2017. , 27.-30.03.2017, Potsdam, Germany .

[thumbnail of Abstract] [thumbnail of TalkMsommer2017-1.pdf]

Sommer, M., Hölz, S. and Jegen, M. (2017) Implementation of the Rational Krylov subspace method for marine tCSEM forward modeling and sensitivity calculation on GPU. Open Access [Talk] In: 6. International Symposium on Three-Dimensional Electromagnetics (3DEM-6). , 28.-30.03.2017, Berkeley, California, USA .


Sommer, M., Hölz, S. and Jegen, M. (2017) Sensitivity calculations by model order reduction in the rational Krylov Subspace. [Talk] In: 27. Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung. , 25.-29.09.2017, Breklum, Germany .

[thumbnail of Weymer et al MetroSea.pdf]

Weymer, B. A. , Jegen, M. , Schwalenberg, K., Hölz, S. , Faghih, Z., Duan, S. M., Micallef, A. and Mountjoy, J. (2017) Using marine controlled-source electromagnetics to map the occurrence of offshore groundwater: Canterbury Basin, New Zealand. [Talk] In: IMEKO TC19 Workshop on Metrology for the Sea “Learning to measure sea health parameters.”. , 11.10.-13.10.2017, Naples, Italy .

[thumbnail of Abstract_Jegen.pdf]

Jegen, M. , Hölz, S. , Safipour, R., Swidinsky, A. and Petersen, S. (2016) Exploration of Buried SMS Deposits with Time Domain EM. [Talk] In: Near Surface Geoscience 2016 - Second Applied Shallow Marine Geophysics Conference. , 04.-08.09.2016, Barcelona, Spain . DOI 10.3997/2214-4609.201602170.


Gehrmann, R., Schwalenberg, K., Hölz, S. , Zander, T., Dettmer, J. and Bialas, J. (2016) Controlled source electromagnetic data analysis with seismic constraints and rigorous uncertainty estimation in the Black Sea. [Talk] In: AGU Fall Meeting 2016. , 12.-16.12.2016, San Francisco, USA .

[thumbnail of Abstract]

Hölz, S. and Jegen, M. (2016) How to Find Buried and Inactive Seafloor Massive Sulfides Using Transient Electromagnetics - A Case Study from the Palinuro Seamount. [Talk] In: EAGE/DGG Workshop on Deep Mineral Exploration. , 18.03.2016, Münster, Germany . DOI 10.3997/2214-4609.201600037.


Hölz, S. and Jegen, M. (2016) Detektierung und Charakterisierung von inaktiven Massivsulfiden im marinen Umfeld mittels transienter Elektromagnetik - eine Fallstudie vom Palinuro Seamount. [Talk] In: DGG Annual Meeting 2016. , 14.-17.03.2016, Münster, Germany .


Schwalenberg, K., Gehrmann, R., Rippel, D., Hölz, S. and Zander, T. (2016) Gas hydrate saturation estimates from the Danube Delta offshore Romania using marine controlled source electromagnetics. [Talk] In: 13. Gas In Marine Sediments (GIMS 13). , 19.- 22.09.2016, Tromsø, Norway .


Hölz, S. , Jegen, M. , Petersen, S. and Hannington, M. D. (2015) How to find buried and inactive seafloor massive sulfides using transient electromagnetics – a case study from the Palinuro Seamount in the Tyrrhenian Sea. [Talk] In: Underwater Mining Conference 2015. , 01.-05.11.2015, Tampa Bay, Florida, USA .


Hölz, S. , Swidinsky, A. and Jegen, M. (2014) Investigations on Small Scale Targets with Sputnik, A Two Polarization Transmitter System. [Talk] In: CSEM Workshop during the EAGE Meeting 2014. , 16.-19.06.2014, Amsterdam, Netherlands .


Jegen, M. , Hölz, S. , Cukur, D., Sommer, M., Attias, E., Weitemeyer, K. and Berndt, C. (2014) Joint Interpretation of Electromagnetic and Seismic Data to Determine Gas and Methane Hydrate Distribution within the Nyegga CNE03 Seep. [Talk] In: AGU Fall Meeting 2014. , 15.-19.12.2014, San Francisco, USA .


Hölz, S. , Swidinsky, A. and Jegen, M. (2013) The Use of Rotational Invariants for the Interpretation of Marine CSEM Data. [Talk] In: MARELEC 2013. , 16.-19.07.2013, Hamburg .


Hölz, S. , Swidinsky, A., Sommer, M., Lüdemann, M. and Jegen, M. (2013) Sputnik – New Approaches to Marine Electromagnetics. [Talk] In: EMTF Meeting. , 23.- 27.09.2013, Kirchhundem Rahrbach, Germany .


Swidinsky, A., Edwards, N., Hölz, S. and Jegen, M. (2013) Locating seafloor receivers using late time marine CSEM fields: Theory and applications. [Talk] In: MARELEC 2013. , 16.-19.07.2013, Hamburg .


Swidinsky, A., Hölz, S. and Jegen, M. (2013) Rapid seafloor resistivity mapping using the GEOMAR transient marine CSEM system. [Talk] In: EAGE Meeting 2013. , 10.06.-13.06.2013 , London .


Swidinsky, A., Hölz, S. and Jegen, M. (2012) The transient marine CSEM response of a conductive seafloor using a horizontal wire loop. [Talk] In: 72. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG). , 05.-08.03.2012, Hamburg .


Swidinsky, A., Hölz, S. , Jegen, M. and Edwards, R. N. (2012) On locating a ship-towed electromagnetic streamer using a seafloor dipole transmitter. [Talk] In: Oceans’ 12 MTS/IEEE Conference. , 21.-24.05.2012, Yeosu, South Korea .


Jegen, M. , Hölz, S. , Swidinsky, A. and Brückmann, W. (2011) Quantification of marine sulfide deposits using marine electromagnetic methods. [Talk] In: OCEANS '11 MTS/IEEE Kona. , 19.09.-22.09.2011, Kona, Hawaii, USA .


Swidinsky, A., Hölz, S. and Jegen, M. (2011) Mapping the resistivity structure of the North Alex mud volcano with the marine CSEM method. [Talk] In: Schmucker-Weidelt-Kolloquium - 24. Kolloquium Elektromagnetische Tiefenforschung. , 26.09.-29.09.2011, Neustadt an der Weinstraße .


Brückmann, W., Bialas, J. , Jegen, M. D. , Lefeldt, M. R., Hölz, S. and Feseker, T. (2010) Dynamic controls of fluid and gas flow at North Alex Mud Volcano, West Nile Delta. [Talk] In: AGU Fall Meeting 2010. , 13.12.-17.12.2010, San Francisco, California, USA .


Brückmann, W., Lefeldt, M., Hölz, S. , Tryon, M. and Bialas, J. (2010) Seismic triggering of fluid flow in the North Alex mud volcano on the western Nile deep-sea fan. [Talk] In: EGU General Assembly 2010. , 02.-07.05.2010, Vienna, Austria .


Hall, J., Hübscher, C., Ehrhardt, A., Dehghani, A. and Hölz, S. (2010) From subduction to collision: The role of the Eratosthenes Seamount in the eastern Mediterranean. [Talk] In: Tectonic Crossroads: Evolving Orogens of Eurasia-Africa-Arabia. , 04.-08.10.2010, Ankara, Turkey .

[thumbnail of Abstract]

Hölz, S. and Jegen, M. and European Geosciences Union (2010) The resistivity structure of the North Alex Mud Volcano as derived from the interpretation of CSEM data. [Talk] In: EGU General Assembly 2010. , 02.05.-07.05.2010, Vienna, Austria . Geophysical Research Abstracts. .


Gehrmann, R., Avdeeva, A., Bialas, J. , Hölz, S. , Jegen-Kulcsar, M. , Lefeldt, M., Sommer, M. and Worzewski, T. (2009) Magnetotellurische und reflexionsseismische Daten im Umfeld des Schlammvulkans North Alex, West Nil Delta - erste Ergebnisse. [Talk] In: Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG). , 23.03.-26.03, Kiel .


Hölz, S. and Jegen-Kulcsar, M. (2009) CSEM-Experiment am Schlammvulkan "North Alex" im südöstlichen Mittelmeer. [Talk] In: 69. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG). , 23.03.-26.03, Kiel .


Hölz, S. and Jegen-Kulcsar, M. (2009) Harmonic oscillations in EM-signals measured on the North Alex Mud Volcano. [Talk] In: EMTF-Meeting. , Seddiner See .


Hölz, S. and Jegen-Kulcsar, M. (2009) Development of a CSEM system for the electromagnetic investigation of the North Alex Mud Volcano. [Talk] In: EGU General Assembly. , 19.04.-23.04, Vienna, Austria .


Hölz, S. and Jegen, M. (2009) Erste Ergebnisse eines CSEM-Experiments auf dem Schlammvulkan North Alex im südöstlichen Mittelmeer. [Other] In: 69. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG). , 23.03.-26.03.2009, Kiel . 69. Jahrestagung der Deutschen Geophysikalischen Gesellschaft in Kiel : 23.-26. März 2009. ; p. 22 .


Worzewski, T., Jegen-Kulcsar, M. , Chen, J., Hölz, S. , Moorkamp, M. and Brasse, H. (2008) Marine magnetotellurics on Costa Rican subduction zone. [Talk] In: 19. International Workshop on Electromagnetic Induction in the Earth. , 23.10.-29.10, Beijing, China .

Conference posters


Barnscheid, K. C. and Hölz, S. (2021) Qualitative and quantitative analysis of the new marine electromagnetic “Coil2Dipole” experiment. [Poster] In: 81. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG). , 01.03.-05.03.2021, Kiel (online) .


Hölz, S. , Barnscheid, K. C., Reeck, K. and Jegen, M. (2021) Electromagnetic experiments for the detection and characterization of seafloor massive sulfides at the Palinuro Seamount. [Poster] In: 81. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG). , 01.03.-05.03.2021, Kiel (online) .


Szitkar, F. , Hölz, S. , Tarits, P. and Petersen, S. (2021) Deep-sea electric and magnetic surveys over active and inactive basalt-hosted hydrothermal sites of the TAG Segment (26°, MAR): An optimal combination for seafloor massive sulfide exploration. [Poster] In: NCS Exploration Deep-sea Minerals Conference. , 20.-21.10.2021, Bergen, Norway .

[thumbnail of Abstract]

Chen, L., Jegen, M. , Hölz, S. , Berndt, C. and Klaeschen, D. (2018) Hydrate Quantification SW offshore Taiwan through the integration of EM and seismic data. Open Access [Poster] In: Taiwanese-German Joint Symposium on Marine Gas Hydrate: TaiGer VIII . , 05.-06.04.2018, Bremen, Germany .


Duan, S., Hölz, S. and Jegen, M. (2018) Study on Gas Hydrate Targets in the Danube Delta with the Sputnik Controlled-Source Electromagnetic System. [Poster] In: 24. International EM Induction Workshop. , 13.-20.08.2018, Helsingør, Denmark .

[thumbnail of FB4_GDY_ZFaghih_D1708_EMIW.pdf]

Faghih, Z., Weymer, B. A. , Jegen-Kulcsar, M. D. , Duan, S. M., Haroon, A. , Hölz, S. , Schwalenberg, K. , Micallef, A. , Mountjoy, J. and Woelz, S. (2018) Using Marine Controlled-Source Electromagnetics to Study Potential Offshore Groundwater: Canterbury Basin, New Zealand. [Poster] In: The 24. EM Induction Workshop. , 13.08.-20.08.2018, Helsingør, Denmark .

[thumbnail of Abstract]

Haroon, A. , Jegen-Kulcsar, M. , Duan, S., Faghih, Z., Weymer, B. , Hölz, S. and Tezkan, B. (2018) 2D Inversion of time-domain controlled source electromagnetic and differential electrical dipole data based on an update of MARE2DEM to the time-domain. Open Access [Poster] In: 24. International EM Induction Workshop. , 13.-20.08.2018, Helsingør, Denmark .


Hölz, S. , Jegen, M. , Petersen, S. , Hannington, M. D., Safipour, R. and Swidinsky, A. (2018) MARTEMIS - An electromagnetic coil system for the detection of buried seafloor massive sulfides. [Poster] In: 47. Underwater Mining Conference. , 10.-14.09.2018, Bergen, Norway .

[thumbnail of Abstract]

Reeck, K., Müller, H. and Hölz, S. (2018) Quantification and reduction of platform immanent bias factors on frequency and time domain coil data. Open Access [Poster] In: 24. International EM Induction Workshop. , 13.-20.08.2018, Helsingør, Denmark .


Schwalenberg, K., Gehrmann, R., Rippe, D., Duan, S., Hölz, S. , Dannowski, A. , Zander, T., Bialas, J. , Riedel, M. , Bohrmann, G. and Haeckel, M. (2018) Marine Controlled Source Electromagnetic Gas Hydrate Studies in the Danube Delta, Western Black Sea. [Poster] In: AGU Fall Meeting 2018. , 10.-14.12.2018, Washington, D.C., USA .


Chen, L., Hölz, S. and Jegen, M. (2017) CSEM measurements for methane hydrate detection offshore Taiwan. [Poster] In: 27. Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung. , 25.-29.09.2017, Breklum, Germany .


Chen, L., Jegen, M. , Hölz, S. , Berndt, C. , Chi, W. C., Liu, C. S. and Lin, S. (2017) Joint Geophysical Data Interpretation on Gas Hydrate System Offshore Southwestern Taiwan. [Poster] In: International Conference on Gas Hydrate in Continental Margins. , 02.-03.10.2017, Taipei, Taiwan .


Duan, S., Hölz, S. , Li, G. and Jegen, M. (2017) Study on Gas Hydrate Targets in the Danube Delta with the Sputnik Controlled Source Electromagnetic System. [Poster] In: 27. Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung. , 25.-29.09.2017, Breklum, Germany .


Faghih, Z., Weymer, B. A. , Jegen-Kulcsar, M. , Duan, S., Haroon, A. , Hölz, S. , Schwalenberg, K. , Micallef, A. , Mountjoy, J. and Woelz, S. (2017) Using Marine Controlled-Source Electromagnetics to Study Potential Offshore Groundwater: Canterbury Basin, New Zealand. [Poster] In: 27. Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung. , 25.-29.09.2017, Breklum, Germany .


Faghih, Z., Weymer, B. A. , Jegen, M. , Duan, S. M., Hölz, S. and Schwalenberg, K. (2017) First results of a marine CSEM experiment for exploration of potential offshore groundwater: Canterbury Margin, New Zealand. [Poster] In: 27. Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung. , 25.-29.09.2017, Breklum, Germany .


Hölz, S. , Haroon, A. , Jegen, M. , Safipour, R. and Swidinsky, A. (2017) Exploration of Seafloor Massive Sulfide Deposits with the Novel EM Induction System MARTEMIS. [Poster] In: 27. Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung. , 25.-29.09.2017, Breklum, Germany .


Li, G., Hölz, S. , Duan, S. and Jegen, M. (2017) Development of a 2D inversion code for marine CSEM data sets using rotational invariants. [Poster] In: 27. Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung. , 25.-29.09.2017, Breklum, Germany .


Safipour, R., Hölz, S. , Jegen, M. and Swidinsky, A. (2017) Exploring for Mineral Deposits on the Seafloor with Transient Electromagnetic Systems. [Poster] In: Exploration 17. , Toronto, Canada, 22.10.-25.10.2017 .

[thumbnail of Abstract]

Schwalenberg, K., Hölz, S. , Gehrmann, R., Rippe, D., Dannowski, A. , Zander, T., Duan, S., Jegen, M. and Bialas, J. (2017) Gas hydrate occurrences in the Danube Delta, Western Black Sea: Results from 2D and 3D controlled source electromagnetics. Open Access [Poster] In: EGU General Assembly 2017. , 23.-28.04.2017, Vienna, Austria .


Schwalenberg, K., Rippe, D., Gehrmann, R., Hölz, S. and Zander, T. (2016) Marine CSEM Investigation of submarine gas hydrate targets in the Danube Delta, western Black Sea. [Poster] In: 23. Electromagnetic Induction Workshop (EMIW). , 14.-20.08.2016, Chian Mai, Thailand .


Berndt, C. , Chi, W. C. , Jegen, M. , Muff, S., Hölz, S. , Lebas, E. , Sommer, M., Lin, S. , Liu, C. S. , Lin, A. , Klaucke, I. , Klaeschen, D. , Chen, L. , Kunath, P. , McIntosh, K. and Feseker, T. (2015) Tectonic Controls on Gas Hydrate Distribution off SW of Taiwan. [Poster] In: AGU 2015. , 14. – 18.12.15, San Francisco, USA .


Safipour, R., Hölz, S. , Halbach, J., Jegen, M. and Swidinsky, A. (2015) Using self-potential to explore for submarine massive sulfides: Palinuro Seamount, Tyrrhenian Sea. [Poster] In: UMC Conference 2015. , 01.-06.11.2015, Tampa Bay, USA .


Schwalenberg, K., Rippe, D. and Hölz, S. (2015) FS Maria S. MERIAN Ausfahrt MSM 35: Marine elektromagnetische Untersuchungen zur Exploration von submarinen Gashydratvorkommen im Donau-Delta, westliches Schwarzes Meer. [Poster] In: 75. Tagung der Deutschen Geophysikalischen Gesellschaft. , 23.-26.03.2015, Hannover .


Hölz, S. and Jegen, M. (2014) Sputnik - A two polarization transmitter system for marine controlled source electromagnetics on small scale targets. [Poster] In: International Electromagnetic Introduction Workshop. , 28.08.-01.09.2014, Weimar .


Lüdemann, M., Cukur, D., Hartung, P., Sommer, M., Hölz, S. and Jegen, M. (2014) Interpretation of mCSEM data acquired with the GEOMAR Sputnik transmitter system for the characterization of gas hydrates in the vicinity of a fluid-escape chimney in the Nyegga pockmark field, offshore Norway. [Poster] In: International Electromagnetic Introduction Workshop. , 28.08.-01.09.2014, Weimar .


Swidinsky, A., Sommer, M., Hölz, S. , Jegen, M. , Berndt, C. and Chi, W. (2014) Imaging gas hydrate deposits off-shore Taiwan with marine electromagnetics using the GEOMAR Sputnik transmitter system. [Poster] In: International Electromagnetic Introduction Workshop. , 28.08.-01.09.2014, Weimar .


Haedke, H., Hölz, S. and Hartmann, K. (2013) Stationary Wavelet Analysis of a Digital Elevation Models for the Detection of Hidden Geomorphic Structures in the Gaxun Nur Basin, NW China. [Poster] In: EGU General Assembly 2013. , 07.-12.04.2013, Vienna, Austria .


Rudersdorf, A., Hölz, S. and Reicherter, K. (2013) Geophysical Investigations of the Gaxun Nur Basin (NW China). [Poster] In: 73. Annual Meeting of the German Geophysical Society (DGG). , 04.-07.03.2013, Leipzig .


Sommer, M., Hölz, S. , Moorkamp, M., Swidinsky, A., Heincke, B., Scholl, C. and Jegen, M. (2013) Speeding up a marine 3D CSEM code with GPU. [Poster] In: 3DEM-5, 5. International Symposium on Three-Dimensional Electromagnetics "Future Challenges". , 07.-09.05.2013, Sapporo, Japan .


Sommer, M., Hölz, S. , Moorkamp, M., Swidinsky, A., Heincke, B., Scholl, C. and Jegen, M. (2013) Speeding up a marine 3D CSEM code with GPU. [Poster] In: MARELEC 2013. , 16.-19.07.2013, Hamburg .


Hölz, S. , Swidinsky, A. and Jegen, M. (2012) The use of rotational invariants of the electric field tensor in the interpretation of marine CSEM data. [Poster] In: 72. Jahrestagung der Deutschen Geophysikalischen Gesellschaft (DGG) 2010. , 05.03.-08.03.2012, Hamburg .

[thumbnail of Abstract]

Hölz, S. and Jegen, M. (2011) Five years of marine research using EM methods at the IFM-GEOMAR. [Poster] In: EGU General Assembly 2011. , 03.04.-08.04.2011, Vienna, Austria . Geophysical Research Abstracts, 13 (EGU2011-13340 ).


Hölz, S. and Jegen, M. (2011) The resistivity structure of the North Alex Mud Volcano from marine CSEM measurements. [Poster] In: 71. Jahrestagung der Deutschen Geophysikalischen Gesellschaft gemeinsam mit der Arbeitsgemeinschaft Extraterrestrische Forschung. , 21.02.- 24.02.2011, Köln . 71. Jahrestagung der Deutschen Geophysikalischen Gesellschaft gemeinsam mit der Arbeitsgemeinschaft Extraterrestrische Forschung und dem Fachverband Extraterrestrische Physik der Deutschen Physikalischen Gesellschaft : 21.–24. Februar 2011 in Köln. ; p. 40 .


Sommer, M. and Hölz, S. (2011) Adaption and GPU based parallelization of the code TEMDDD for the 3D modelling of CSEM data. [Poster] In: 71. Jahrestagung der Deutschen Geophysikalischen Gesellschaft gemeinsam mit der Arbeitsgemeinschaft Extraterrestrische Forschung. , 21.02.- 24.02.2011, Köln . 71. Jahrestagung der Deutschen Geophysikalischen Gesellschaft gemeinsam mit der Arbeitsgemeinschaft Extraterrestrische Forschung und dem Fachverband Extraterrestrische Physik der Deutschen Physikalischen Gesellschaft : 21.–24. Februar 2011 in Köln. ; p. 40 .


Swidinsky, A., Hölz, S. and Jegen, M. (2011) Transient electromagnetic assessment of seafloor mineral deposits: a model study. [Poster] In: AGU Fall Meeting 2011. , 05.12.-09.12.2011, San Francisco, California, USA .


Lefeldt, M., Hölz, S. , Bialas, J. and Brückmann, W. (2010) Long-Wavelength Oscillations at a Mud Volcano in the West Nile Delta. [Poster] In: EGU General Assembly 2010. , 02.-07.05.2010, Vienna, Austria .

[thumbnail of poster.pdf]

Sommer, M., Heincke, B., Moorkamp, M., Jegen-Kulcsar, M. and Hölz, S. (2010) Adaption and GPU based parallelization of the code TEMDDD for the 3D modelling of CSEM data. [Poster] In: 20th International Electromagnetic Induction Workshop. , 19.09.2010, Giza, Egypt .


Lefeldt, M., Hölz, S. , Bialas, J. and Brückmann, W. (2009) Harmonic oscillations at a mud volcano in the West Nile Delta. [Poster] In: AGU Fall Meeting. , 14.12.-18.12, San Francisco, California, USA .


Brückmann, W., Bialas, J. , Brown, K. , Feseker, T., Hensen, C. , Hölz, S. , Jegen, M. , Linke, P. , Nuzzo, M., Reitz, A. and Scholz, F. (2008) The West Nile Delta mud volcano project. [Poster] In: 9th International Conference on Gas in Marine Sediments (ICSG). , 15.-19.09.2008, Bremen .


Hölz, S. and Jegen-Kulcsar, M. (2008) Preparative model-study for a CSEM-experiment at the North Alex Mud Volcano. [Poster] In: 9th ICSG-Meeting. , 15.09.-19.09, Bremen .

Reports - Cruise Reports

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Hölz, S. , Perner, M. , Adam-Beyer, N., Schmitz, W., Türk, M., Wenzel-Storjohann, A. , Leibold, P., Diller, N., Jäkle, A., Kurbjuhn, T. and Scheppukat, D. (2023) Bathymetric and microbial investigations at the Grimsey Vent Field (Iceland), Cruise No. AL595, 31.5. – 20.6.2023, Kiel (Germany) – Grimsey Vent Field (Iceland) – Kiel (Germany) AUV@GVF. Open Access . Alkor-Berichte, AL595 . GEOMAR Helmholtz Centre for Ocean Research, Kiel, Germany, 70 pp. DOI 10.3289/CR_AL595.

Reports - Weekly reports

[thumbnail of AL595_Wochenbericht_3.pdf] [thumbnail of AL595_WeeklyReport_3.pdf]

Hölz, S. (2023) 3. Wochenbericht AL595. Open Access . GEOMAR, Kiel, Germany, 2 pp.

[thumbnail of AL595_Wochenbericht_1.pdf] [thumbnail of AL595_WeeklyReport_1.pdf]

Hölz, S. (2023) 1. Wochenbericht AL595. Open Access . GEOMAR, Kiel, Germany, 2 pp.

[thumbnail of AL595_Wochenbericht_2.pdf] [thumbnail of AL595_WeeklyReport_2.pdf]

Hölz, S. (2023) 2. Wochenbericht AL595. Open Access . GEOMAR, Kiel, Germany, 4 pp.

[thumbnail of MSM103-9WB_de-1.pdf] [thumbnail of MSM103-9WB_en.pdf]

Hölz, S. (2021) 9. Wochenbericht MSM103 PRINCE. Open Access . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 1 pp.

[thumbnail of MSM103-8WB_en.pdf] [thumbnail of MSM103-8WB_de.pdf]

Hölz, S. (2021) 8. Wochenbericht MSM103 PRINCE. Open Access . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 3 pp.

[thumbnail of MSM103-7. WB_en.pdf] [thumbnail of MSM103-7. WB_de.pdf]

Hölz, S. (2021) 7. Wochenbericht MSM103 PRINCE. Open Access . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 2 pp.

[thumbnail of MSM103-6. WB_en-1.pdf] [thumbnail of MSM103-6. WB_de.pdf]

Hölz, S. (2021) 6. Wochenbericht MSM103 PRINCE. Open Access . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 2 pp.

[thumbnail of MSM103-4. WB_de.pdf] [thumbnail of MSM103-4. WB_en.pdf]

Hölz, S. (2021) 4. Wochenbericht MSM103 PRINCE. Open Access . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 2 pp.

[thumbnail of MSM103-5.WB_de.pdf] [thumbnail of MSM103-5.WB_en.pdf]

Hölz, S. (2021) 5. Wochenbericht MSM103 PRINCE. Open Access . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 2 pp.

[thumbnail of MSM103-3. WB_de.pdf] [thumbnail of MSM103-3. WB_en.pdf]

Hölz, S. (2021) 3. Wochenbericht MSM103 PRINCE. Open Access . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 3 pp.

[thumbnail of MSM103-2. WB_de.pdf] [thumbnail of MSM103-2. WB_en.pdf]

Hölz, S. (2021) 2. Wochenbericht MSM103 PRINCE. Open Access . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 2 pp.

[thumbnail of MSM103_WB1.pdf]

Hölz, S. (2021) 1. Wochenbericht MSM103 PRINCE. Open Access . GEOMAR Helmholtz-Zentrum für Ozeanforschung Kiel, 2 pp.

[thumbnail of POS535_Wochenbericht_3.pdf] [thumbnail of POS535_WeeklyReport_3.pdf]

Hölz, S. (2019) 3. Wochenbericht POS535. Open Access . UNSPECIFIED, 2 pp.

Hölz, S. (2019) 2. Wochenbericht POS535. Open Access . UNSPECIFIED, 1 pp.

Hölz, S. (2019) 1. Wochenbericht POS535. Open Access . UNSPECIFIED, 2 pp.

[thumbnail of POS524_Wochenbericht_2.pdf] [thumbnail of POS524_WeeklyReport_2.pdf]

Hölz, S. (2018) 2. Wochenbericht POS524. Open Access . UNSPECIFIED, 3 pp.

Hölz, S. (2018) 1. Wochenbericht POS524. Open Access . UNSPECIFIED, 1 pp.

[thumbnail of POS509 Wochenbericht1 - Hölz.pdf]

Hölz, S. (2017) 1. Wochenbericht POS509. Open Access . UNSPECIFIED, 1 pp.

[thumbnail of POS509 Wochenbericht 2 - Hölz.pdf]

Hölz, S. (2017) 2. Wochenbericht POS509. Open Access . UNSPECIFIED, 1 pp.

Reports - Data reports

This list was generated on Sat Nov 29 15:04:00 2025 CET.

Expeditions

  • MSM140 (PERBAS), Norwegian margin, FS MS Merian, 4.9. – 9.10.2025, co-PI, head of EM group.
  • DY190 (HYDROMOX), Santorini, RV Discovery, 1. – 28.3.2025, head of EM group.
  • JC254 (ULTRA), Semyenov Hydrothermal Field, RV James Cook, 26.10. – 29.11.2023, head of EM group.
  • AL596 (AUV@Grimsey), Grimsey Vent Field, FS Alkor, 31.5 – 20.6.2023, chief scientist.
  • MSM103, SOURCE, Gulf of St. Lawrence, FS MS Merian, 12.9 – 15.11.2021, chief scientist
  • INSIGHT (leg 2), Gulf of Cadiz, RV S. de Gamboa, 30.9. - 20.10.2019, head of EM group
  • POS535 (Loki2Grimsey), Northern Mid-Atlantic Ridge, RV Poseidon, 9.6. – 3.7.19, chief scientist
  • POS524 (GrimseyEM), Northern Iceland, RV Poseidon, 7.6. – 26.6.2018, chief scientist
  • POS509 (ElectroPal 2), Tyrrhenian Sea, RV Poseidon, 15.2. – 3.3.2017, chief scientist
  • JC138 (Blue Mining), Mid Atlantic Ridge, RV James Cook, 8.7. – 24.8.2016, head of EM group
  • POS483 (ElectroPal), Tyrrhenian Sea, RV Poseidon, 28.3. – 15.4.2015
  • MSM35 (SUGAR Site CSEM), Black Sea, MS Merian, 20.1. - 5.2.2014, head of EM group
  • SO227 (TaiFlux), offshore Taiwan, RV Sonne, 1.4. - 1.5.2013.
  • M87/2 (COSY), Vøring Plateau (Norway), RV Meteor, 05.05.-27.05.2012.
  • SO214 (NEMESYS), Hikurangi Margin (New Zealand), RV Sonne, 9.3. - 22.4.2011
  • MSM14/3, Eratosthenes Seamount / Cyprus Arc, MS Merian, 12.3. - 5.4.2010, head of EM group
  • Alboran Sea, MT survey, 30.7. - 5.8.2009, head of EM team
  • 64PE298, West Nile Delta Project Cruise – WND 3, 7.11. - 25.11.2008

Workshops

  • Organizer of the 27th national EMTF meeting (Schmucker-Weidelt Kolloquium für Elektromagnetische Tiefenforschung), 25. - 29.9.2017, Breklum, Germany.
  • Member of local organizing committee for 22nd EM Induction Workshop, Weimar, Germany 24 – 30.8. 2014.
  • Organizer of workshop "Marine MT and EM", 20. - 22.8.2014, Kiel, Germany (tutorial workshop before 22nd EMIW).

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