A5022423253- Methane Hydrates and Related Phenomena
- earthquake and tectonic studies
- Geological formations and processes
- Geology and Paleoclimatology Research
- Landslides and related hazards
- Hydrocarbon exploration and reservoir analysis
- Seismic Imaging and Inversion Techniques
- Geological and Geochemical Analysis
- Reservoir Engineering and Simulation Methods
- Geological and Geophysical Studies
- Drilling and Well Engineering
- Seismology and Earthquake Studies
- Seismic Waves and Analysis
- Geological and Geophysical Studies Worldwide
- Atmospheric and Environmental Gas Dynamics
- Geological Modeling and Analysis
- High-pressure geophysics and materials
- Geotechnical Engineering and Soil Mechanics
- Hydraulic Fracturing and Reservoir Analysis
- Geological Studies and Exploration
- Marine and environmental studies
- CO2 Sequestration and Geologic Interactions
- Soil and Unsaturated Flow
- Coastal and Marine Dynamics
- Geological and Tectonic Studies in Latin America
University of Bremen
2016-2025
HAW Hamburg
2024
Deutsche Allianz Meeresforschung
2022
GEOMAR Helmholtz Centre for Ocean Research Kiel
2022
Leibniz Centre for Tropical Marine Research
2022
International Ocean Discovery Program
2017-2020
Japan Agency for Marine-Earth Science and Technology
2011
Scripps Institution of Oceanography
2001-2004
Kiel University
1999-2003
University of California, San Diego
2001-2003
Mud volcanism and diapirism have puzzled geoscientists for ∼2 centuries. They been described onshore offshore in many places on Earth, although they occur various tectonic settings, the majority of features known to date are located compressional scenarios. This paper summarizes main thrusts mud volcano research as well regions which has described. volcanoes show variable geometry (up tens kilometers diameter several hundred meters height) a great diversity regarding origin fluid solid...
Eight slow-slip events over 6 years accommodated up to 50% of the fault slip on Nankai megathrust.
Research Article| December 01, 2012 Drilling reveals fluid control on architecture and rupture of the Alpine fault, New Zealand R. Sutherland; Sutherland * 1GNS Science, PO Box 30368, Lower Hutt 5040, *E-mail: r.sutherland@gns.cri.nz. Search for other works by this author on: GSW Google Scholar V.G. Toy; Toy 2University Otago, 56, Dunedin 9054, J. Townend; Townend 3Victoria University Wellington, 600, Wellington 6140, S.C. Cox; Cox 4GNS Private Bag 1930, J.D. Eccles; Eccles 5Institute Earth...
Multiple lines of evidence exist for a range sediment mass movement processes within the shallow megasplay fault zone (MSFZ) area and adjacent slope basin in outer fore arc Nankai subduction zone, Japan. Diagnostic features observed three‐dimensional reflection seismic data cores Integrated Ocean Drilling Program (IODP) document multifarious history spanning ∼2.87 million years. Various modes scales remobilization can be related to different morphotectonic settings which they occurred. From...
Abstract Although the permanently to seasonally ice-covered Arctic Ocean is a unique and sensitive component in Earth’s climate system, knowledge of its long-term history remains very limited due restricted number pre-Quaternary sedimentary records. During Polarstern Expedition PS87/2014, we discovered multiple submarine landslides along Lomonosov Ridge. Removal younger sediments from steep headwalls has led exhumation Miocene close seafloor. Here document presence IP 25 as proxy for spring...
Abstract An M w 6.0 earthquake struck ~50 km offshore the Kii Peninsula of southwest Honshu, Japan on 1 April 2016. This occurred directly beneath a cabled monitoring network at Nankai Trough subduction zone and within 25–35 two borehole observatories installed as part International Ocean Discovery Program's NanTroSEIZE project. The earthquake's location close to seafloor subseafloor offers unique opportunity evaluate dense geodetic seismological data in near field moderate‐sized earthquake....
A 1.6 km riser borehole was drilled at site C0009 of the NanTroSEIZE, in center Kumano forearc basin, as a landward extension previous drilling southwest Japan Nankai subduction zone. We determined principal horizontal stress orientations from analyses breakouts and drilling‐induced tensile fractures by using wireline logging formation microresistivity images caliper data. The maximum orientation is approximately parallel to convergence vector between Philippine Sea plate Japan, showing...
[1] While studies of rock and sediment friction are common, cohesion is a component the shear strength that often ignored despite its potential importance for faulting, transport, other geomechanical processes. We directly measure clay-rich by measuring in direct-shear apparatus with no applied effective normal stress (σ′n = 0). present measurements two cases: (1) After vertical consolidation only, (2) after followed under stress. Under stresses 90 kPa to 2 MPa, both unsheared sheared cases...
Abstract Morphologic features, 600–1100 m across and elevated up to 30 above the surrounding seafloor, interpreted be mud volcanoes were investigated on continental slope in Beaufort Sea Canadian Arctic. Sediment cores, detailed mapping with an autonomous underwater vehicle, exploration a remotely operated vehicle show that these are young actively forming features experiencing ongoing eruptions. Biogenic methane low‐chloride, sodium‐bicarbonate‐rich waters extruded warm sediment accumulates...
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...
Cone penetration testing with pore pressure measurement (CPTU) is a cost- and time-efficient way of collecting in situ geotechnical parameters near-surface marine soils for cable pipeline tracks, offshore foundations, geohazard identification. The measured dynamic CPTU (cone resistance, sleeve friction, pressure) are higher than the static parameters. This mismatch caused by different rates used tests (dynamic have up to 500 times tests; i.e., commonly 2 cm/s rate). study presents...
Abstract Twelve submarine mud volcanoes (MV) in the Kumano forearc basin within Nankai Trough subduction zone were investigated for hydrocarbon origins and fluid dynamics. Gas hydrates diagnostic methane concentrations exceeding solubilities recovered from MVs 2, 4, 5, 10. Molecular ratios (C 1 /C 2 < 250) stable carbon isotopic compositions (δ 13 C‐CH 4 >−40‰ V‐PDB) indicate that hydrate‐bound hydrocarbons (HCs) at 10 are derived thermal cracking of organic matter. Considering...
Experimental shearing at plate rate speeds reveals slow slip events and earthquake potential on weak, shallow faults.
High-resolution multi-beam bathymetry, 3D and 2D seismic reflection profiles from the South China Sea are used to investigate morphology, characteristics, origin implications petroleum systems of recurrent slope failure in Qiongdongnan Basin, northern Sea. Seven Late Miocene-Holocene mass-transport deposits (MTDs) numerous submarine canyons were identified on continental rise, providing new insights evolution an enigmatic region This paper defends that interpreted MTDs triggered by a...
Subaquatic mass movements are common in marine and lacustrine environments, but due to their barely predictable nature, direct observations of these processes limited so that knowledge is only indirectly obtained by investigating the resulting mass-transport deposits (MTDs). Most research focuses on most frontally emergent slides, fast-moving events able generate turbidity currents tsunamis. Geohazards confined slides mechanisms behind typical fold-and-thrust deformation structures however...