Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 원용진 | * |
dc.date.accessioned | 2016-08-27T04:08:11Z | - |
dc.date.available | 2016-08-27T04:08:11Z | - |
dc.date.issued | 2015 | * |
dc.identifier.issn | 1525-2027 | * |
dc.identifier.other | OAK-15663 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/217625 | - |
dc.description.abstract | The Australian-Antarctic Ridge (AAR) is one of the largest unexplored regions of the global mid-ocean ridge system. Here, we report a multiyear effort to locate and characterize hydrothermal activity on two first-order segments of the AAR:KR1 and KR2. To locate vent sites on each segment, we used profiles collected by Miniature Autonomous Plume Recorders on rock corers during R/V Araon cruises in March and December of 2011. Optical and oxidation-reduction-potential anomalies indicate multiple active sites on both segments. Seven profiles on KR2 found 3 sites, each separated by similar to 25 km. Forty profiles on KR1 identified 17 sites, some within a few kilometer of each other. The spatial density of hydrothermal activity along KR1 and KR2 (plume incidence of 0.34) is consistent with the global trend for a spreading rate of similar to 70 mm/yr. The densest area of hydrothermal activity, named "Mujin,'' occurred along the 20 km-long inflated section near the segment center of KR1. Continuous plume surveys conducted in January-February of 2013 on R/V Araon found CH4/He-3 (1-15 x 10(6)) and CH4/Mn (0.01-0.5) ratios in the plume samples, consistent with a basaltic-hosted system and typical of ridges with intermediate spreading rates. Additionally, some of the plume samples exhibited slightly higher ratios of H-2/He-3 and Fe/Mn than others, suggesting that those plumes are supported by a younger hydrothermal system that may have experienced a recent eruption. The Mujin-field was populated by Kiwa crabs and seven-armed Paulasterias starfish previously recorded on the East Scotia Ridge, raising the possibility of circum-Antarctic biogeographic connections of vent fauna. | * |
dc.language | English | * |
dc.publisher | AMER GEOPHYSICAL UNION | * |
dc.title | First hydrothermal discoveries on the Australian-Antarctic Ridge: Discharge sites, plume chemistry, and vent organisms | * |
dc.type | Article | * |
dc.relation.issue | 9 | * |
dc.relation.volume | 16 | * |
dc.relation.index | SCI | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.startpage | 3061 | * |
dc.relation.lastpage | 3075 | * |
dc.relation.journaltitle | GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS | * |
dc.identifier.doi | 10.1002/2015GC005926 | * |
dc.identifier.wosid | WOS:000365039400019 | * |
dc.identifier.scopusid | 2-s2.0-84944442186 | * |
dc.author.google | Hahm, Doshik | * |
dc.author.google | Baker, Edward T. | * |
dc.author.google | Rhee, Tae Siek | * |
dc.author.google | Won, Yong-Jin | * |
dc.author.google | Resing, Joseph A. | * |
dc.author.google | Lupton, John E. | * |
dc.author.google | Lee, Won-Kyung | * |
dc.author.google | Kim, Minjeong | * |
dc.author.google | Park, Sung-Hyun | * |
dc.contributor.scopusid | 원용진(7102129159) | * |
dc.date.modifydate | 20240123094854 | * |