A5071618399- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Geology and Paleoclimatology Research
- Hydrocarbon exploration and reservoir analysis
- Underwater Acoustics Research
- Atmospheric and Environmental Gas Dynamics
- Marine and environmental studies
- Geological and Geophysical Studies
- Hydraulic Fracturing and Reservoir Analysis
- Oil Spill Detection and Mitigation
- Maritime Navigation and Safety
- Geological Modeling and Analysis
- Seismology and Earthquake Studies
- Underwater Vehicles and Communication Systems
- Geological and Geochemical Analysis
- Offshore Engineering and Technologies
- Arctic and Antarctic ice dynamics
- Landslides and related hazards
- Oceanographic and Atmospheric Processes
- Geological formations and processes
- Maritime and Coastal Archaeology
- Reservoir Engineering and Simulation Methods
- Seismic Waves and Analysis
- Earthquake Detection and Analysis
- Flow Measurement and Analysis
University of Bremen
2013-2024
Florida State University
2018
Leibniz Centre for Tropical Marine Research
2018
Halliburton (United Kingdom)
2009
Research Article| August 01, 2013 A slump in the trench: Tracking impact of 2011 Tohoku-Oki earthquake M. Strasser; Strasser 1Geological Institute, ETH Zurich, Sonneggstrasse 5, 8092 Switzerland Search for other works by this author on: GSW Google Scholar Kölling; Kölling 2MARUM—Center Marine Environmental Sciences, University Bremen, Leobener Strasse, 28359 Germany C. dos Santos Ferreira; Ferreira H.G. Fink; Fink T. Fujiwara; Fujiwara 3Japan Agency Marine-Earth Science and Technology...
The giant 2011 Tohoku-oki earthquake has been inferred to remobilise fine-grained, young surface sediment enriched in organic matter from the slope into >7 km deep Japan Trench. Yet, this hypothesis and assessment of its significance for carbon cycle hindered by limited data density resolution hadal zone. Here we combine new high-resolution bathymetry with sub-bottom profiler images cores taken during 2012-2016 order map first time spatial extent earthquake-triggered event deposit along We...
Abstract The history of glaciations on Southern Hemisphere sub-polar islands is unclear. Debate surrounds the extent and timing last glacial advance termination sub-Antarctic South Georgia in particular. Here, using sea-floor geophysical data marine sediment cores, we resolve record glaciation offshore through transition from Last Glacial Maximum to Holocene. We show a sea-bed landform imprint shelf-wide progressive deglaciation. Renewed glacier resurgence fjords between c. 15,170 13,340 yr...
Abstract We conducted multibeam bathymetric surveys crossing the northern Japan Trench offshore Sanriku and examined seafloor displacement by means of difference in bathymetry before after 11 March 2011 Tohoku‐oki earthquake. The displacements were less than several meters vertical 20 m trench‐normal horizontal displacement; consequently, lower amplitude evaluated. Comparatively, landward slope near trench was uplifted, middle subsided, midslope terrace depressed Therefore, localized very...
This multi-disciplinary study of the hydrocarbon seepage system at Tsanyao Yang Knoll in southern Gulf Mexico illustrates amount and fate hydrocarbons (mainly oil methane) emanating from seafloor structure rising through a 3400 m water column. forms part Campeche Knolls was found to be one most active structures such an exceptional depth. Combining ship-based AUV-based hydroacoustic mapping with direct observations investigations, which used TV-sled ROV gas sampling devices provided...
In the northern South China Sea (SCS) we explored methane dynamics in water column during SONNE-cruise SO266 October/November 2018. Two depth zones contained elevated concentrations: upper 400 m ( 10°C and > 20°C, respectively. Both 16S rRNA gene pmoA amplicon analyses revealed distinct microbial methanotrophic communities with temperature of 27°C, ~10°C, 3°C. Second, found concentrations 200-400 FWCR-region whereas increased occurred uppermost 100 above SSFR. The deeper plume FWCR might be...
Oceanic spreading centers north of Iceland are characterized by ultraslow rates, and related hydrothermal activity has been detected in the water column at seafloor along nearly all ridge segments. An exception is 500-km-long Knipovich Ridge, from where, until now, no vents were known. Here we report investigation first vent field which was discovered July 2022 during expedition MSM109. The newly field, named Jøtul associated with eastern bounding fault rift valley rather than an axial...
Autonomous underwater vehicles (AUVs) equipped with multibeam echosounders (MBES) are essential for collecting high-resolution bathymetric data in the deep sea. Navigation of AUVs and accuracy acquired MBES is challenging, especially water or rough terrain. Here, we present AUV Abyss operational workflow that uses mission planning together a long baseline (LBL) positioning network, systematic post-processing using feature matching. The enables autonomous exploration even difficult terrain,...
Abstract Drilling horizontal wells successfully has become one of the most important challenges facing oil companies. Horizontal allow operators to obtain more production from a single hole, compared cummulative several traditional vertical wells. New technologies have been developed help maximize productivity in A highly effective, field-proven new technology is time-delayed filter cake removal system. The system applied mainly and can be used with different completion types including open...
Mud volcanoes (MVs) are surface structures typically created by episodic discharge of fluids and solids, often associated to onshore offshore accretionary prisms on convergent plate boundaries. Detailed investigations ongoing activity its morphological changes, as well a better understanding the temporal evolution these highly dynamic systems, may improve estimations material fluxes from MVs drastically. Until today, approximately 70 individual were discovered in northern Ionian Sea...