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Estimates of heat flow derived from gas hydrate-BSRs on the northeastern South Shetland margin, Antarctic Peninsula

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Title
Estimates of heat flow derived from gas hydrate-BSRs on the northeastern South Shetland margin, Antarctic Peninsula
Other Titles
남극반도 남쉐틀랜드 대륙주변부에서 가스하이드레이트-BSR을 이용한 지열류량 산출
Authors
Jin, Young Keun
Hong, Jong Kuk
Kim, Yeadong
Nam, SangHeon
Keywords
Antarctic Peninsula; BSR; South Shetland Margin; gas hydrate; heat flow
Issue Date
2005
Citation
Jin, Young Keun, et al. 2005. Estimates of heat flow derived from gas hydrate-BSRs on the northeastern South Shetland margin, Antarctic Peninsula. Tapir Academic Press. Tapir Academic Press. 2005.06.13~.
Abstract
Bottom simulating reflector (BSR), representing the base of gas hydrate stability field, is widespread on the northeastern South Shetland margin (SSM), Antarctic Peninsula. With phase diagram of gas hydrate stability field, heat flow can be derived from BSR depth beneath the seafloor determined on multichannel seismic profiles. The heat flow values in the study area range from 50 mW/m2 to 85 mW/m2 with an average value of 65 mW/m2. The landward heat flow decrease from the South Shetland Trench would be attributed to the landward thickening of the accretionary prism and the upward advection of heat associated with fluid expulsion. The continental slope 1500 m to 3000 m deep, where BSRs are most distinct in the SSM, shows high variation of heat flow possibly due to complex tectonic activities in the study area. The abrupt heat flow variation along the slope occurs near the NW-SE trending large-scale fault. The fault would be related to a fracture zone in the former Phoenix plate or a transfer fault across the Bransfield Basin between Antarctic Peninsula and the South Shetland Islands.
URI
http://repository.kopri.re.kr/handle/201206/7595
Conference Name
Tapir Academic Press
Conference Place
Tapir Academic Press
Conference Date
2005.06.13~
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