Seacause

The project SEACAUSE contributes to the installation of a Tsunami Early Warning System (TEWS) for Indonesia. For this purpose, bathymetric surveys, geophysical and geological work will be done around the epicentres of the earthquakes that occurred in December 2004 and March 2005 and along the lower part of the accretion wedge. It is a prerequisite for the production of Tsunami models that segment boundaries be correctly identified. In order to better understand the cause of the earthquake of December 2004, which led to the devastating Tsunami, and to differentiate it to the one of March 2005, the relevant segments will be compared. This comparison will focus on the identification of slide masses, on the nature of the décollement and on fault systems reaching the ocean bottom.

During the 1st cruise with RV SONNE, SEACAUSE I, a net of seismologic instruments will be deployed and bathymetric as well a magnetic and gravimetric measurements will be taken. The cruise SEACAUSE II will focus on multichannel and wide angle seismics, geoelectric potential field methods, and bathymetric and Parasound surveys. At the end of the cruise, the seismometers will be recovered. Scientific work is carried out in co-operation with the national working group TEWS (Tsunami Early Warning System) and international groups of researchers.

 

Forschungsfahrten

R/V SONNE

SO186-A, 08.10.05-27.10.05, Jakarta-Jakarta, chief scientist Anne Krabbenhöft
SO186-B, 28.10.05-13.11.05, Jakarta-Jakarta, chief scientist Wilhelm Weinrebe
SO186-C, 15.11.05-28.11.05, Jakarta-Singapore, chief scientist Ernst Flüh
SO186-D, 07.01.06-20.01.06, Singapore-Singapore, chief scientist Ernst Flüh
SO 186-3, 26.02.06-16.03.06, Penang-Singapore, chief scientist Ernst Flüh

IFM-GEOMAR SO 186 Leg 3 cruise report (Pdf, 174 pp, 80 MB)