Results 51 to 60 of about 1,263 (158)

Tracing methane sources in shallow waters of the North Sea: Biogenic signatures and hydrocarbon transport near abandoned wells

Limnology and Oceanography, Volume 71, Issue 7, July 2026.
Abstract Numerous abandoned wells in the North Sea may provide gas, particularly methane (CH4), migration pathways by penetrating shallow, biogenic gas accumulations. However, related sampling campaigns have been largely contradictory and lack a substantial database. Research cruise MSM98 targeted the abandoned wells B18‐1, DOK 1‐X, B11‐2, THOR and D‐1
Katja U. Heeschen, Stefan Schloemer, Robert Kopte, Miriam Römer, Martin Blumenberg   +4 more
wiley   +1 more source

Quantifying Thermo‐Fluid‐Chemical Coupling: Advection Governs Multi‐Phase Zonation and Self‐Sealing in a Hydrate‐Cold Seep System

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 7, July 2026.
Abstract Deep fluid advection fundamentally governs the thermal‐fluid‐chemical evolution and distribution of hydrate‐cold seep systems. However, coupled relationships between deep fluid and shallow multiphase dynamics remain inadequately constrained.
Wei Huang, Zice Jia, Jinfeng Ren, Jinqiang Liang, Wei Zhang, Lifeng Wang, Shengxiong Yang   +6 more
wiley   +1 more source

Sub-bottom profiler transect across the pockmark field.during HEINCKE cruise HE471

, 2017
Sub-bottom profiler transect (Innomar SES-2000 medium onboard R/V Heincke) across the pockmark field. A second reflector below the seafloor has been identified as the upper limit of Pleistocene deposits in combination with core CelticExplorer2011_45VC ...
Winter, Christian, Gabriel Herbst (8021480), Herbst, Gabriel, Knut Krämer (8017826), Krämer, Knut, Christian Winter (6963071)   +5 more
core   +1 more source

Multi-parameter coupling effects on plume morphology and pockmark development induced by submarine shallow gas leakage

Frontiers in Marine Science
Plumes and pockmarks are formed when shallow gas breaches the seabed and infiltrates into ocean currents, disrupting the original ecological environment and affecting biological habitats and migration behaviors.
Hao Wang, Jinnan Jiang, Muhammad Ali, Xiaolei Liu, Kan Wang, Jiahao Liu   +5 more
doaj   +1 more source

Identifying the pre‐Odra river system with hydroacoustic and seismic reflection imagery offshore Rügen Island, southern Baltic Sea

Boreas, Volume 55, Issue 3, Page 790-807, July 2026.
Understanding the course and dynamics of ancient river systems, such as the pre‐Odra, provides valuable insights into the post‐glacial evolution of landscapes and riverine processes. The northwest‐trending pre‐Odra was an important drainage system of the European mainland into the Baltic Basin during and after the Scandinavian Ice Sheet retreat ...
Maryse C. Schmidt, Elisabeth Seidel, Christian Hübscher, Benedikt Haimerl, Jonas Preine   +4 more
wiley   +1 more source

Effects of slope instability on pockmark deformation on the continental slope in the southern South China Sea

Frontiers in Marine Science
Pockmark development and slope instability are key geological processes shaping the continental slope. In this study, high-resolution multibeam data, subbottom profiles, and a reprocessed two-dimensional seismic profile were used to identify and analyze ...
Zhihao Liu, Zhihao Liu, Ziyin Wu, Ziyin Wu, Yang Liu, Jihong Shang, Jieqiong Zhou, Jialing Zhang, Jialing Zhang   +8 more
doaj   +1 more source

Revisiting the Hummeln structure, Sweden—A shallow marine Cambrian impact structure

Meteoritics &Planetary Science, Volume 61, Issue 7, Page 1213-1242, July 2026.
Abstract Hummeln is a simple impact structure located in south‐eastern Sweden. It is approximately 1.2 km in diameter and almost completely covered by a lake. Here, we present the first detailed investigation of impactites and mapping of the 164.25 m deep drill core Hummeln‐1 with a focus on impact metamorphism and the impact process.
S. Alwmark, J. Granbom, P. Ahlberg, M. Calner, S. Richoz, K. J. Gajewska, W. R. Hyde, K. Ljung, C. Alwmark   +8 more
wiley   +1 more source

Geohazard features of the western Sardinia

Journal of Maps
The Maps of Geohazard features of the Western Sardinia produced by the Magic project (MArine Geohazard along Italian Coasts) were presented. The maps were created using morphobathymetric data obtained by surveying with a multi-beam echo sounder. The main
G. De Falco, A. Conforti, G. Di Martino, S. Innangi, S. Simeone, R. Tonielli, F. Budillon   +6 more
doaj   +1 more source

Effect of Milling and Wire Electric Discharge Machining on Recast Layer Formation and Tensile Behavior of Metallic Materials

MetalMat, Volume 3, Issue 2, June 2026.
ABSTRACT Machining of materials is an invaluable technique to give specific shapes and dimensions of desired materials. Different machining processes give rise to different surface characteristics that include not only surface roughness but also specific surface morphology, such as the recast layer.
Animesh Kumar Basak, Alokesh Pramanik, Afifah Zakiyyah Juri, Nachimuthu Radhika, T. Mohanraj   +4 more
wiley   +1 more source

Cold-seep fossil macrofaunal assemblages from Vestnesa Ridge, eastern Fram Strait, during the past 45 000 years

Polar Research, 2019
Four cores from 1200 m water depth from Vestnesa Ridge on the western Svalbard margin in the eastern Fram Strait were studied for their content of fossil macrofaunas.
Elsebeth Thomsen, Tine Lander Rasmussen, Kamila Sztybor, Nils-Martin Hanken, Ole Secher Tendal, Alfred Uchman   +5 more
doaj   +1 more source