Bettina Schramm

Master track of MARIA S. MERIAN cruise MSM143 in 1 sec resolution (zipped, 129 MB)

Bettina Schramm

Raw data acquired by position sensors on board RV MERIAN during expedition MSM143 were processed to receive a validated master track which can be used as reference of further expedition data. During MSM143 the motion reference unit Kongsberg SeaTex AS MRU-5 combined …

Master tracks in different resolutions of MARIA S. MERIAN cruise MSM143, Reykjavik - Reykjavik, 2026-05-14 - 2026-06-18

Bettina Schramm

Raw data acquired by position sensors on board RV MERIAN during expedition MSM143 were processed to receive a validated master track which can be used as reference of further expedition data. During MSM143 the motion reference unit Kongsberg SeaTex AS MRU-5 combined …

First drone registration of underwater methane seeps in Bulgaria

Petar Petsinski, Atanas Vasilev, Christoph Böttner, Bettina Schramm

The aim of the work is to verify the hypothesis for the possibility for registration of underwater methane emissions with a drone with an RGB camera. A brief overview of research in Bulgaria related to underwater gas seeps is presented, with a …

bg, dk, de (code pays fourni par la source)

Volcanic Flank Collapse, Secondary Sediment Failure and Flow‐Transition: Multi‐Stage Landslide Emplacement Offshore Montserrat, Lesser Antilles

Michel Kühn, Christian Berndt, Sebastian Watt, Matthew J. Hornbach et autres

Abstract Volcanic flank collapses, especially those in island settings, have generated some of the most voluminous mass transport deposits on Earth and can trigger devastating tsunamis. Reliable tsunami hazard assessments for flank collapse‐driven tsunamis require an understanding of the complex emplacement processes …

de, gb, us, dk (code pays fourni par la source)

Seismic velocity structure of the 25 °S OCC north of the Rodriguez Triple Junction at the Central Indian Ridge extracted from ocean bottom seismometer

Anke Dannowski, M. Engels, Bettina Schramm, Michael Schnabel et autres

Three tectonic plates meet at the Rodriguez Triple Junction in the Central Indian Ocean. The plates are separated by the Central Indian Ridge (CIR), the South-East Indian Ridge (SEIR) and the South-West Indian ridge (SWIR), which all show highly different spreading behaviours. …

de (code pays fourni par la source)

Stress Constraints From Shear‐Wave Analysis in Shallow Sediments at an Actively Seeping Pockmark on the W‐Svalbard Margin

Sunny Singhroha, Bettina Schramm, Andreia Plaza‐Faverola, Przemyslaw Domel et autres

Abstract Mechanisms related to sub‐seabed fluid flow processes are complex and inadequately understood. Petrophysical properties, availability of gases, topography, stress directions, and various geological parameters determine the location and intensity of leakage which change over time. From tens of seafloor pockmarks mapped …

dk, no, de (code pays fourni par la source)

Formation of the Figge Maar Seafloor Crater During the 1964 B1 Blowout in the German North Sea

Jens Karstens, Jens Schneider von Deimling, Christian Berndt, Christoph Böttner et autres

In 1964, exploration drilling in the German Sector of the North Sea hit a gas pocket at ∼2900 m depth below the seafloor and triggered a blowout, which formed a 550 m-wide and up to 38 m deep seafloor crater now known …

de, se, no (code pays fourni par la source)

Assuring the integrity of offshore carbon dioxide storage

Douglas P. Connelly, Jonathan M. Bull, Anita Flohr, Allison Schaap et autres

Carbon capture and storage is a key mitigation strategy proposed for keeping the global temperature rise below 1.5 °C. Offshore storage can provide up to 13% of the global CO2 reduction required to achieve the Intergovernmental Panel on Climate Change goals. The …

gb, de, no, at, nl, fr, us (code pays fourni par la source)

Seismic imaging of an active fluid conduit below Scanner Pockmark, Central North Sea

Bettina Schramm, Christian Berndt, Anke Dannowski, Christoph Böttner et autres

Subsurface CO2 storage is a key strategy to reduce greenhouse gas emission, but leakage of CO2 along natural fluid pathways may affect storage formation integrity. However, the internal structure and the physical properties of these focused fluid conduits are poorly understood. Here, …

de (code pays fourni par la source)

Focused methane migration formed pipe structures in permeable sandstones: Insights from uncrewed aerial vehicle‐based digital outcrop analysis in Varna, Bulgaria

Christoph Böttner, Ben Callow, Bettina Schramm, Felix Groß et autres

Abstract Focused fluid flow shapes the evolution of marine sedimentary basins by transferring fluids and pressure across geological formations. Vertical fluid conduits may form where localized overpressure breaches a cap rock (permeability barrier) and thereby transports overpressured fluids towards shallower reservoirs or …

de, gb, bg (code pays fourni par la source)

Multiscale characterisation of chimneys/pipes: Fluid escape structures within sedimentary basins

A. H. Robinson, Ben Callow, Christoph Böttner, N. Yilo et autres

Evaluation of seismic reflection data has identified the presence of fluid escape structures cross-cutting overburden stratigraphy within sedimentary basins globally. Seismically-imaged chimneys/pipes are considered to be possible pathways for fluid flow, which may hydraulically connect deeper strata to the seabed. The properties …

gb, de, fr, no, nl, se (code pays fourni par la source)

Characterization of the seismic velocities in a gas chimney blow the actively seeping Lunde pockmark, Vestnesa Ridge, Svalbard Margin: Preliminary results

Bettina Schramm, Sunny Singhroha, Anke Dannowski, Sunil Vadakkepuliyambatta et autres

Hydrocarbon gases are actively seeping from pockmarks in the eastern part of the Vestnesa Ridge, western-Svalbard Margin. One of these is Lunde pockmark which is characterized by a seismic chimney below. Such seismic anomalies are widely believed to represent fluid migration pathways. …