Manganese and methane in hydrothermal plumes along the East Pacific Rise, 8°40′ to 11°50′N
نویسندگان
چکیده
منابع مشابه
Methane in aging hydrothermal plumes
Methane concentration and the stable carbon isotopic composition ( C–CH4) were measured in aging hydrothermal plume waters originating at the Endeavour Segment, Juan de Fuca Ridge. CH4 concentrations decreased systematically from 600 nM at on-axis stations to 11 nM at a distal station 15 km off axis; background CH4 concentrations are 2 nM. CH4 behaves nonconservatively in plume waters and does ...
متن کاملStauromedusan populations inhabiting deep-sea hydrothermal vents along the southern East Pacific Rise
Dense populations of “stalked jellyfish” (Stauromedusae) were encountered at two geographically-separated, deep-sea hydrothermal vent fields located at 7°26’S; and 20°02’S along the East Pacific Rise (EPR). DSV Alvin was utilized (on dives 3320 and 3334) at the sites to collect numerous stauromedusans, which were immediately frozen (at -70°C) or preserved in 70% ethanol upon arrival on board th...
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[1] A multidisciplinary expedition to the southern East Pacific Rise (27 300–32 200S) provided an opportunity to compare the efficiency and effectiveness of two methods for mapping hydrothermal plumes: the standard conductivity-temperature-depth-optical (CTDO) tow-yo method and a towed fixed array of hydrographic and optical sensors (Miniature Autonomous Plume Recorders (MAPRs)). Six second-ord...
متن کاملComparative phylogeography among hydrothermal vent species along the East Pacific Rise reveals vicariant processes and population expansion in the South.
The use of sequence polymorphism from individual mitochondrial genes to infer past demography has recently proved controversial because of the recurrence of selective sweeps acting over genes and the need for unlinked multilocus data sets. However, comparative analyses using several species for one gene and/or multiple genes for one species can serve as a test for potential selective effects an...
متن کاملEvidence for hydrothermal Archaea within the basaltic flanks of the East Pacific Rise.
Little is known about the fluids or the microbial communities present within potentially vast hydrothermal reservoirs contained in still-hot volcanic ocean crust beneath the flanks of the mid-ocean ridge. During Alvin dives in 2002, organic material attached to basalt was collected at low, near-ambient temperatures from an abyssal hill fault scarp in 0.5 Ma lithosphere on the western ridge flan...
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ژورنال
عنوان ژورنال: Geochimica et Cosmochimica Acta
سال: 1995
ISSN: 0016-7037
DOI: 10.1016/0016-7037(95)00245-u