Marine cold seeps
Web28 feb. 2014 · Marine cold seeps and their manifestations: geological control, biogeochemical criteria and environmental conditions February 2014 International … Web1 aug. 2024 · The presence of cold seeps in the South China Sea (SCS) had not been confirmed until 2004 ( Chen et al., 2005; Suess, 2005 ). Investigations since then have resulted in the discovery of more than 40 seep sites, mostly in the northern but also a few sites in the southern SCS ( Fig. 1; Feng et al., 2024a; Zhang et al., 2024b ).
Marine cold seeps
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Web25 apr. 2024 · Cold seeps were first discovered by American marine geologist Charles Paull in 1983 on the Florida Escarpment in the Gulf of Mexico at a depth of 10,500 feet. Since then, several cold seeps have … Web8 sep. 2006 · Deep-sea cold seeps are sites where low-temperature fluids rich in hydrocarbons and hydrogen sulfide leak onto the sea floor and support specialized animal communities dominated by taxa having symbiotic relationships with chemoautotrophic bacteria ().The trophic structure of seep communities is similar to that of hydrothermal …
Web17 nov. 2024 · At marine cold seeps, gaseous and liquid hydrocarbons migrate from deep subsurface origins to the sediment-water interface. Cold seep sediments are known to host taxonomically diverse microorganisms, but little is known about their metabolic potential and depth distribution in relation to hydrocarbon and electron acceptor availability. Web1 dec. 2024 · The Haima cold seeps are active cold seep areas that were recently discovered on the northwestern slope of the South China Sea (SCS). Three piston cores (CL30, CL44, and CL47) were collected within… 14 PDF Using chemical compositions of sediments to constrain methane seepage dynamics: A case study from Haima cold …
WebMoste of my current work aims at identifying paleoceanographic changes in the sub-polar to polar regions of the Pacific Ocean, both in the Northern and Southern Hemisphere. In the subarctic northwest Pacific, I acquire new, quantitative paleoceanographic proxy-data for ocean temperatures and biogeochemical cycles and compare those with results from … WebWhile most carbonate concretions at cold seeps generally display REE distribution patterns very similar to those for reduced pore waters in marine sediments, we find that seafloor carbonate pavements composed of aragonite commonly exhibit pronounced light-REE enrichments, as inferred from high shale-normalized La/Gd ratio (>~0.8), interpreted here …
WebMarine Cold Seeps E. Suess Pages 185-203 Mud Volcanoes H. Niemann, A. Boetius Pages 205-214 Abiogenic Hydrocarbon Production at the Geosphere-Biosphere Interface via Serpentinization Reactions G. …
WebMarine seeps are windows into different depth levels of the submerged geosphere. In global geologic settings the sources of seep fluids range from 10s of meters (groundwater … cao connect service websiteWeb7 mrt. 2024 · The seepage of methane and other hydrocarbons drives complex biogeochemical processes in marine sediments and the overlying water column. Seeps support chemosynthesis-based communities and impact the chemistry of the water column. british gas book a serviceWebIn highly fragmented and relatively stable cold-seep ecosystems, species are expected to exhibit high migration rates and long-distance dispersal of long-lived pelagic larvae to maintain genetic integrity over their range. Accordingly, several species inhabiting cold seeps are widely distributed across the whole Atlantic Ocean, with low genetic … cao cliniclownsWeb24 sep. 2010 · Cold seeps are colonised in a concentric fashion. Image courtesy of BGR, after Sahling et al. (2002) At locations where high methane concentrations are found … british gas book a service telephone numberWebThe following outline is provided as an overview of and topical guide to water: . Water is a chemical substance with the chemical formula H 2 O.A water molecule contains one oxygen and two hydrogen atoms connected by covalent bonds. Water is a liquid at ambient conditions, but it often co-exists on Earth with its solid state, ice, and gaseous state … british gas book a gas safetyWeb17 dec. 2024 · Cold seep carbonates are important archives of pore water chemistry and ancient methane seepage activity. They also provide an important contribution to the global carbon sink. Seep carbonates at three sediment layers (3.0, 52.1, and 53.6 mbsf) were collected at site W08B in the Qiongdongnan Basin of the South China Sea. This study … cao closing date for late applicationsWeb1 jan. 2013 · In marine cold seep sediments, Lloyd et al. provided geochemical and molecular evidence for AOM activity at 146 g L −1 ... partially inhibited AOM such that maximum volumetric rates are orders of magnitude lower in comparison with other cold seeps. At Mercator MV, AOM is mediated by ANME-1, ... british gas book a smart meter install