Low-Frequency Sound Propagation in an Underwater Waveguide with a Giant Gassy Pockmark
Journal of Marine Science and Engineering, 2023 Bottom formations known as pockmarks basically arise due to extensive gas emission. Active pockmarks are characterized by exceptionally high gas saturation and substantially reduced sound speed.
Denis Makarov +2 more
exaly +3 more sources
Journal of Hydrology: Regional Studies, 2021 Study region: Two giant pockmarks in Lake Banyoles (NE Spain) have been surveyed over the last 35 years. The giant pockmark ‘B1’ has maintained an ‘eruptive’ mode with permanent groundwater discharge, whereas, the giant pockmark ‘B2’ has displayed ...
Teresa Serra +5 more
doaj +1 more source
The geochemical characteristics of the bottom sediment in the pockmark area of the eastern part of the Gulf of Finland [PDF]
Baltic Region, 2011 It is the first time pockmark-like structures have been detected in the south-eastern part of the Gulf of Finland with the help of a side-scan sonar and a profile recorder.
Ivanova Varvara +2 more
doaj +1 more source
Journal of Maps, 2023 We present the bathy-morphological map at a scale of 1: 50,000 of the area around the submerged Ferdinandea Island, the ‘Neverland’ of the Sicily Channel (central Mediterranean Sea).
Daniele Spatola +6 more
doaj +1 more source
Seabed fluid flow in the China Seas
Frontiers in Marine Science, 2023 Seabed fluid flow is a widespread and important natural phenomenon in marine environments, which involves complex multi-physics, multi-process and multi-scale processes.
Chaoqi Zhu +12 more
doaj +1 more source
Geohimicheskaja harakteristika donnyh otlozhenij v zone pokmarkov v vostochnoj chasti Finskogo zaliva [The geochemical characteristics of the bottom sediment in the pockmark area of the eastern part of the Gulf of Finland] [PDF]
Балтийский регион, 2011 It is the first time pockmark-like structures have been detected in the south-eastern part of the Gulf of Finland with the help of a side-scan sonar and a profile recorder.
Ivanova Varvara +2 more
doaj +1 more source
Seismic Anisotropy Within an Active Fluid Flow Structure: Scanner Pockmark, North Sea
Frontiers in Earth Science, 2021 Understanding sub-seabed fluid flow mechanisms is important for determining their significance for ocean chemistry and to define fluid pathways above sub-seafloor CO2 storage reservoirs.
G. Bayrakci +11 more
doaj +1 more source
Fracture-controlled fluid transport supports microbial methane-oxidizing communities at Vestnesa Ridge [PDF]
Biogeosciences, 2019 We report a rare observation of a mini-fracture in near-surface sediments (30 cm below the seafloor) visualized using a rotational scanning X-ray of a core recovered from the Lomvi pockmark, Vestnesa Ridge, west of Svalbard (1200 m water ...
H. Yao +12 more
doaj +1 more source
Heliyon, 2017 We present new evidence for the existence of a large pockmark field on the continental slope of the Santos Basin, offshore southeast Brazil. A recent high-resolution multibeam bathymetric survey revealed 984 pockmarks across a smooth seabed at water ...
Michel Michaelovitch de Mahiques +4 more
doaj +1 more source
Structures in Shallow Marine Sediments Associated with Gas and Fluid Migration
Journal of Marine Science and Engineering, 2021 Geological structure changes, including deformations and ruptures, developed in shallow marine sediments are well recognized but were not systematically reviewed in previous studies. These structures, generally developed at a depth less than 1000 m below
Gongzheng Ma +3 more
doaj +1 more source