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Dr. Stefan Wenau

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Scientific Interest

My research interests lie mainly with the geoscientific applications of multichannel seismic methods as well as other acoustic methods.

Fluid flow systems Fluid migration, fault systems, pockmark formation, salt tectonics, seafloor seepage, gas hydrates Lower Congo Basin
  Hydrothermal circulation through sediments and oceanic crust Juan de Fuca plate
Sedimentary systems The impact of slope failures on sediment-ocean current interaction and resulting slope sedimentation Namibia
  Distribution of fluvial sediment input along a continental margin by ocean currents Mozambique
Water column Automatic mapping of water column anomalies (e.g. gas bubble streams) North Sea, Lower Congo Basin

 

Streamer deployment

Projects

since 2017 Boulderdetection Boulders in the sub-surface represent important obstacles to offshore foundations for e.g. wind farms. The Boulderdetection project aims at developing new methods for the localization of such boulders in sub-seafloor depths of several tens of meters. The project is funded by the BMWi and located at the Faculty of Geosciences in cooperation with Fraunhofer IWES and industry partners. I am involved in developing new beamforming methods using standard seismic sources and available acquisition equipment suitable for sub-seafloor imaging.
2014 - 2017 IMGAM  This BMWi project developed a new Autonomous Underwater Vehicle (AUV) that uses a multibeam echosounder to automatically image and localize gas bubble streams in the water column and also automatically samples the gas using an autoclave system. I mainly developed algorithms for the detection and localization of water column anomalies in multibeam echosounder data in order to localize the seep sites.
2010 - 2014 Fluid flow in the Lower Congo Basin  Dissertation within the GB project of MARUM: ‘Seismic and acoustic signatures of fluid seepage sites in different tectonic and sedimentary environments'

 

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