Results 61 to 70 of about 2,201 (156)

Metagenomic and geochemical characterization of pockmarked sediments overlaying the Troll petroleum reservoir in the North Sea

BMC Microbiology, 2012
Background Pockmarks (depressions in the seabed) have been discovered throughout the world’s oceans and are often related to hydrocarbon seepage. Although high concentrations of pockmarks are present in the seabed overlaying the Troll oil and gas ...
Håvelsrud Othilde, Haverkamp Thomas HA, Kristensen Tom, Jakobsen Kjetill S, Rike Anne   +4 more
doaj   +1 more source

Aeolian and Biogeochemical Transformations of Detrital Gold Morphology in the Pool Burn Basin, Central Otago, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 1, March 2026.
The Pool Burn basin is a tectonic depression that became almost isolated from the regional drainage system by river reorientation during Pleistocene uplift of surrounding ridges. Consequently, detrital gold in the basin was largely locally derived, from supergene zones on orogenic deposits and recycled from paleoplacers in erosional remnants of Miocene
Marshall Palmer, Dave Craw
wiley   +1 more source

Impacts of Coastal Underground Brine Exploitation on the Depletion of Shallow Brine in Beach and Neritic Zones

Water Resources Research, Volume 62, Issue 3, March 2026.
Abstract Coastal underground brine (CUB) exploitation and groundwater discharge jointly drive the depletion of beach and neritic shallow underground brine (BNSUB). BNSUB is crucial for CUB exploitation, yet its reserve remain unquantified, and the impacts of different mining models on its evolution are poorly understood.
Yufeng Zhang, Tengfei Fu, Xiujun Guo, Tianyuan Zheng, Jian Luo   +4 more
wiley   +1 more source

Biogeochemical processes and microbial diversity of the Gullfaks and Tommeliten methane seeps (Northern North Sea). [PDF]

, 2008
Fluid flow related seafloor structures and gas seeps were detected in the North Sea in the 1970s and 1980s by acoustic sub-bottom profiling and oil rig surveys.
Shovitri, M., H. Niemann, K. Knittel, M. Shovitri, Hovland, M., Boetius, Antje, G. Wegener, Boetius, A., Niemann, H., Wegener, G., A. Boetius, Wegener, Gunter, Knittel, K., M. Hovland   +13 more
core   +1 more source

Semi-Automated Mapping of Pockmarks from MBES Data Using Geomorphometry and Machine Learning-Driven Optimization

Remote Sensing
Accurate mapping of seafloor morphological features, such as pockmarks, is essential for marine spatial planning, geological hazard assessment, and environmental monitoring. Traditional manual delineation methods are often subjective and inefficient when
Vasileios Giannakopoulos, Peter Feldens, Elias Fakiris   +2 more
doaj   +1 more source

Geochemical and Geophysical Monitoring of Hydrocarbon Seepage in the Adriatic Sea

Sensors, 2020
Hydrocarbon seepage is overlooked in the marine environment, mostly due to the lack of high-resolution exploration data. This contribution is about the set-up of a relocatable and cost-effective monitoring system, which was tested on two seepages in the ...
Marzia Rovere, Alessandra Mercorella, Emanuela Frapiccini, Valerio Funari, Federico Spagnoli, Claudio Pellegrini, Andree Soledad Bonetti, Tiziana Veneruso, Anna Nora Tassetti, Marcello Dell’Orso, Marco Mastroianni, Giordano Giuliani, Rocco De Marco, Gianna Fabi, Francesco Ciccone, Ilaria Antoncecchi   +15 more
doaj   +1 more source

Pockmarks, Mud Volcanoes and Hydrocarbon Seeps in the Northern Gulf of Mexico: Trends and Controls on Widespread Fluid and Gas Venting

Basin Research, Volume 38, Issue 2, March–April 2026.
Basin‐scale dataset reveals widespread hydrocarbon venting at the seafloor in the northern Gulf of Mexico. Hydrocarbon release at the seafloor is related to the occurrence of the underlying Louann salt and the gas hydrate stability zone. ABSTRACT The release of hydrocarbons, pore water and fluidized sediments impacts seafloor morphology, marine ...
Muhedeen A. Lawal, Ann E. Cook, Alexey Portnov, Aditya Kumar   +3 more
wiley   +1 more source

Cyclic Pockmark Formation Linked to Plio‐Pleistocene Sea‐Level Rise on the Chatham Rise, New Zealand

Geochemistry, Geophysics, Geosystems
Pockmarks are geomorphological depressions on the seafloor in various underwater environmental settings. They are commonly linked to fluid release from subsurface reservoirs; however, the processes involved, fluid types, and relative timing of their ...
Fynn Warnke, Ingo A. Pecher, Lorna J. Strachan, Jess I. T. Hillman, Brandon Dugan   +4 more
doaj   +1 more source

Forecast of Gas Hydrates Distribution Zones in the Arctic Ocean and Adjacent Offshore Areas

Geosciences, 2018
Gas hydrates (GH) are perspective energy sources, containing significantly more gas resources compared with conventional fields. At the same time, GH pose a danger for exploration and production of hydrocarbon fields. Methane release to the atmosphere is
Vasily Bogoyavlensky, Aleksei Kishankov, Alisa Yanchevskaya, Igor Bogoyavlensky   +3 more
doaj   +1 more source

GAS FLAERS AND MODERN DEGASATION PROCESSES IN THE ARCTIC SEAS (ON THE FREQUENCY RESONANCE RESULTS-BASED)

Геологія і корисні копалини Світового океану, 2023
The newly obtained results of the frequency-resonance (FR) technologies application for the study of the sources and processes of seeps and pockmarks formation in the Arctic Region (Norwegian, Barents Sea) and the North Sea are considered.
V.D. Solovyov, M.A. Yakymchuk, I.M. Korchagin   +2 more
doaj   +1 more source