https://scholars.lib.ntu.edu.tw/handle/123456789/45766
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Cheng, Win-Bin | en |
dc.contributor.author | Lee, Chao-Shing | en |
dc.contributor.author | Liu, Char-Shine | en |
dc.contributor.author | Schnurle, Philippe | en |
dc.contributor.author | Lin, Shiao-Shan | en |
dc.contributor.author | Tsai, Hong-Ruai | en |
dc.creator | Cheng, Win-Bin; Lee, Chao-Shing; Liu, Char-Shine; Schnurle, Philippe; Lin, Shiao-Shan; Tsai, Hong-Ruai | - |
dc.date | 2006 | en |
dc.date.accessioned | 2009-12-09T08:45:48Z | - |
dc.date.accessioned | 2018-06-28T14:10:49Z | - |
dc.date.available | 2009-12-09T08:45:48Z | - |
dc.date.available | 2018-06-28T14:10:49Z | - |
dc.date.issued | 2006 | - |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw//handle/246246/173967 | - |
dc.identifier.uri | http://ntur.lib.ntu.edu.tw/bitstream/246246/173967/1/38.pdf | - |
dc.description.abstract | In the fall of 2004, four profiles of a total length of about 80 km and 24 recovered Ocean Bottom Seismometers (OBSs) were acquired along off-shore southwestern Taiwan. These profiles were oriented in E-W and N-S directions to map the velocity structure of sediments by modeling the vertical component of OBS data. The thickness of sedimentary layers ranges from a few hundred meters to about 2 km, with the largest thickness being found beneath ridges. The most striking feature in the velocity models along E-W profiles is the relatively high velocity wedges, extending from the seafloor to about 2 km in depth; these could be interpreted as a series of westward upthrust faults. The feature of relatively high P-wave velocity could be considered a result of local shallowing of the base of the gas hydrate stability zone, caused by ascending flows of deep fluids passing through the fault zone. In the N-S profiles, a dome-like high velocity structure was observed and could be associated with the phenomenon of hydrate/gas phase boundary fluctuation. After erosion, the sub-seafloor temperature gradient redistributes and results in the hydrate/gas phase boundary moving downward. The results obtained in this study show that tectonic control is an important factor in determining bottom-simulating reflector (BSR) distributions offshore of southwestern Taiwan. | - |
dc.format | application/pdf | en |
dc.format.extent | 7605471 bytes | - |
dc.format.mimetype | application/pdf | - |
dc.language | en | en |
dc.language.iso | en_US | - |
dc.relation | Terrestrial, Atmospheric and Oceanic Sciences 17 (4): 739-756 | en |
dc.relation.ispartof | Terrestrial, Atmospheric and Oceanic Sciences | en_US |
dc.subject | Gas hydrates; Methane migration; OBS seismic data; Seismic tomography | - |
dc.subject.classification | [SDGs]SDG14 | - |
dc.subject.other | marine sediment; numerical model; seafloor; seismic data; seismic reflection; seismic tomography; seismometry; tectonic setting; temperature gradient; velocity structure | - |
dc.title | Velocity Structure in Marine Sediments with Gas Hydrate Reflectors in Offshore SW Taiwan, from OBS Data Tomography | en |
dc.type | journal article | en |
dc.identifier.doi | 10.3319/TAO.2006.17.4.739(GH) | - |
dc.identifier.scopus | 2-s2.0-33846932797 | - |
dc.identifier.isi | WOS:000243814800008 | - |
item.fulltext | with fulltext | - |
item.grantfulltext | open | - |
dc.relation.pages | 739-756 | - |
dc.relation.journalvolume | 17 | - |
dc.relation.journalissue | 4 | - |
dc.identifier.uri.fulltext | http://ntur.lib.ntu.edu.tw/bitstream/246246/173967/1/38.pdf | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.languageiso639-1 | en_US | - |
item.grantfulltext | open | - |
item.cerifentitytype | Publications | - |
item.fulltext | with fulltext | - |
crisitem.author.dept | Oceanography | - |
crisitem.author.dept | Ocean Center | - |
crisitem.author.orcid | 0000-0003-0357-714X | - |
crisitem.author.parentorg | College of Science | - |
crisitem.author.parentorg | Others: University-Level Research Centers | - |
顯示於: | 海洋研究所 |
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