Numerous hydrocarbon seep sites at the continental shelf, slope, and in deep water basin are known to feed Black Sea reservoir of dissolved methane. In this study, we identified likely sources gas oil that emitted four located on slope offshore Georgia Eastern 830 1,140 m depth – an area with seepage only (Batumi area) three areas coupled (Iberia Mound, Colkheti Seep, Pechori Mound). The geoche...

Cold seeps occur in geologically active and passive continental margins, where pore waters enriched in methane are forced upward through the sediments by pressure gradients. The advective supply of methane leads to dense microbial communities with high metabolic rates. Anaerobic methane oxidation presumably coupled to sulphate reduction facilitates formation of carbonates and, in many places, g...

Abstract Hydroacoustic surveys at the accretionary wedge southwest of Taiwan reveal a confined active hydrocarbon seepage area ~ 49,000 m 2 in 1350 water depth on northern crest Four-Way Closure Ridge, which we call Yam Seep. In this study, multibeam and side-scan sonar data acquired during with an autonomous underwater vehicle expedition R/V Ocean Researcher I 2017 showed that is characterized...

EDITORIAL article Front. Earth Sci., 27 April 2022Sec. Biogeoscience https://doi.org/10.3389/feart.2022.868609

SEEP executes the code under test symbolically to extract all code paths and their path constraints. On basis of these results, SEEP crafts program code with predefined input data, so-called path entities. For each path entity, SEEP generates a runtime execution trace by executing them on a test system and increments a block counter for every basic block (branchless sequence of code) each time ...

The active “ cold seep is indisputable evidence to identify the existence of submarine gas hydrate. Due difference in acoustic properties between bubbles and surrounding seawater, measuring scattering intensity a new means detect seep. Cold are main cause scattering, ability closely related frequency incident sound wave, radius bubble, depth bubble. paper introduces ship-borne sonar syst...

Deep-sea hydrothermal vents and cold seeps are submarine springs where nutrient-rich fluids emanate from the sea floor. Vent and seep ecosystems occur in a variety of geological settings throughout the global ocean and support food webs based on chemoautotrophic primary production. Most vent and seep invertebrates arrive at suitable habitats as larvae dispersed by deep-ocean currents. The recen...

BACKGROUND Subsurface fluids from deep-sea hydrocarbon seeps undergo methane- and sulfur-cycling microbial transformations near the sediment surface. Hydrocarbon seep habitats are naturally patchy, with a mosaic of active seep sediments and non-seep sediments. Microbial community shifts and changing activity patterns on small spatial scales from seep to non-seep sediment remain to be examined i...

The abundance and higher taxonomic composition of epizooic metazoan meiobenthic communities associated with mussel and tubeworm aggregations of hydrocarbon seeps at Green Canyon, Atwater Valley, and Alaminos Canyon in depths between 1400 and 2800 m were studied and compared to the infaunal community of non-seep sediments nearby. Epizooic meiofaunal abundances of associated meiobenthos living in...

The Black Sea is the largest anoxic basin on earth and provides unique conditions for the study of microbial habitats and controls on key anaerobic microbial processes in the element cycles. Recent studies of European research programs carried out in situ measurements of fluxes and turnover of methane and sulfur at seep systems of the Black Sea, and investigated the microbial diversity in perma...