Lacustrine Groundwater Discharge Through Giant Pockmarks (Lake Neuchatel, Switzerland)
Frontiers in Water, 2020 Pockmarks are circular depressions on the floor of oceans and lakes and constitute potential hot spots of gas ebullition and/or groundwater discharge. Marine pockmarks are well-studied, whereas lacustrine pockmarks are virtually unexplored.
Stefanie B. Wirth +2 more
doaj +1 more source
Seismic Characteristics of Paleo-Pockmarks in the Great South Basin, New Zealand
Frontiers in Earth Science, 2021 Globally, a wide range of pockmarks have been identified onshore and offshore. These features can be used as indicators of fluid expulsion through unconsolidated sediments within sedimentary basin-fills.
Arunee Karaket +3 more
doaj +1 more source
Wide angle seismic recordings from the 2002 Georgia Basin Geohazards Initiative, Northwestern Washington and British Columbia [PDF]
, 2003 This report describes the acquisition and processing of shallow-crustal wide-angle seismicreflection and refraction data obtained during a collaborative study in the Georgia Strait, western Washington and southwestern British Columbia.
Brocher, T. M. +4 more
core +1 more source
Pockmarks in the fjords of Chilean Patagonia [PDF]
Geological Society, London, Memoirs, 2016 The fjords of Chilean Patagonia are areas of relatively rapid Holocene sediment delivery from glacial, glacifluvial and fluvial systems. These systems are fed by substantial ice- and snow-melt on the flanks of the Andean mountains. Many fjords are infilled by tens of metres of fine-grained, acoustically laminated sediment leading to a relatively flat ...
Dowdeswell, JA +2 more
openaire +1 more source
Controlled-source electromagnetic and seismic delineation of sub-seafloor fluid flow structures in a gas hydrate province, offshore Norway [PDF]
, 2016 Deep sea pockmarks underlain by chimney-like or pipe structures that contain methane hydrate are abundant along the Norwegian continental margin. In such hydrate provinces the interaction between hydrate formation and fluid flow has significance for ...
Attias, Eric +7 more
core +2 more sources
Frontiers in Water, 2021 Pockmarks are crater-like depressions formed by upward fluid flow (gas and/or liquid) through the unconsolidated sediment column on the floor of oceans and lakes.
Adeline N. Y. Cojean +5 more
doaj +1 more source
The diverse morphology of pockmarks around Aotearoa New Zealand
Frontiers in Marine Science, 2023 Seafloor pockmarks are abundant around Aotearoa New Zealand, occurring across a diverse range of tectonic, sedimentological and geomorphological settings.
Jess I. T. Hillman +12 more
doaj +1 more source
Pockmarks in the Witch Ground Basin, Central North Sea [PDF]
Geochemistry, Geophysics, Geosystems, 2019 AbstractMarine sediments host large amounts of methane (CH4), which is a potent greenhouse gas. Quantitative estimates for methane release from marine sediments are scarce, and a poorly constrained temporal variability leads to large uncertainties in methane emission scenarios.
Böttner, Christoph +11 more
openaire +4 more sources
Robust Underwater Image Classification Using Image Segmentation, CNN, and Dynamic ROI Approximation
Engineering Proceedings, 2022 Finding classified rectangular regions of interest (ROIs) in underwater images is still a challenge, and more so if the images pose low quality with respect to illumination conditions, sharpness, and noise.
Stefan Bosse, Parth Kasundra
doaj +1 more source
Distribution and origin of natural gas leakage in the Colorado Basin, offshore Argentina Margin, South America : seismic interpretation and 3D basin modelling [PDF]
, 2014 The detailed analysis of a dense 2D seismic reflection dataset and data from 8 exploration wells, allowed us to identify, map out and characterize possible indications of past and present-day hydrocarbon leakage (i.e.
Anka, Z. +5 more
core +1 more source