2004 - R/V Aurelia Cruise Aur04


31.05.-19.06.2004 : 


Chief Scientist: 

Chief Seismic: Dr. Keil, Dr. Schwenk

MTU Participants: 


Groups involvec

  • Bundesantalt für Geowissenschaften
  • Working Group Marine Technology/Environmental Research, Department of Geoscience, Bremen University (GeoB AG Spiess (MTU))


Instrumentation

  • Arstech single hydrophone streamer (48 channels, 50 m)
  • Sodera S-15 Watergun (0.12 L)
  • Bison Spectra Seismograph., 48 channels, 20 kHz


Aurelia 2004 was the first of a series of cruises which were carried out to support BGR with high-reoslution seismic data serving the project GPDN (Geopotenzaile Deutsche Nordsee). The objective was to collect multichannel seismic data imaging the upper 1-2 seconds TWT covering the late Tertiary and Quaternary within the German EEZ (exclusive economic zone) in the North Sea.

The MTU contribution led to a collection of multichannel seismic lines acquired with the new single hydrophone streamer (48 channels) and on this cruise with a Sodera S15 Watergun, providing signal frequencies up to 1500 Hz. Only with such data, the uppermost 100 m can be properly imaged, which vonectional streamers with 6.25. to 25 m group length are not suitable.

These complementary data were later used within GPDN to create soil characterization cross-section across the whole German North Sea.


BGR seismic data can be found here.







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