DOI: 10.1002/2014GL062474
论文题名: Role of tectonic stress in seepage evolution along the gas hydrate-charged Vestnesa Ridge, Fram Strait
作者: Plaza-Faverola A. ; Bünz S. ; Johnson J.E. ; Chand S. ; Knies J. ; Mienert J. ; Franek P.
刊名: Geophysical Research Letters
ISSN: 0094-9005
EISSN: 1944-8736
出版年: 2015
卷: 42, 期: 3 起始页码: 733
结束页码: 742
语种: 英语
英文关键词: 3-D seismic
; Arctic
; hydrates
; methane seepage
; tectonic stress
; Vestnesa Ridge
Scopus关键词: Faulting
; Hydrates
; Hydration
; Methane
; Seepage
; Seismology
; Tectonics
; 3-D seismic
; Arctic
; Methane seepages
; Tectonic stress
; Vestnesa Ridge
; Gas hydrates
; active fault
; episodic event
; gas hydrate
; methane
; seafloor
; seepage
; shelf break
; tectonic evolution
; tectonic structure
; three-dimensional modeling
; water depth
; Arctic
; Fram Strait
; Vestnesa Ridge
英文摘要: Methane expulsion from the world ocean floor is a broadly observed phenomenon known to be episodic. Yet the processes that modulate seepage remain elusive. In the Arctic offshore west Svalbard, for instance, seepage at 200-400m water depth may be explained by ocean temperature-controlled gas hydrate instabilities at the shelf break, but additional processes are required to explain seepage in permanently cold waters at depths >1000m. We discuss the influence of tectonic stress on seepage evolution along the ∼100km long hydrate-bearing Vestnesa Ridge in Fram Strait. High-resolution P-Cable 3-D seismic data revealed fine-scale (>10m width) near-vertical faults and fractures controlling seepage distribution. Gas chimneys record multiple seepage events coinciding with glacial intensification and active faulting. The faults document the influence of nearby tectonic stress fields in seepage evolution along this deepwater gas hydrate system for at least the last ∼2.7Ma. © 2015 The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84925218609&doi=10.1002%2f2014GL062474&partnerID=40&md5=0dd78df65307e39b532d628eb5d0ad89
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8621
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Centre for Arctic Gas Hydrate Environment and Climate, UiT the Arctic University of Norway, Tromsø, Norway
Recommended Citation:
Plaza-Faverola A.,Bünz S.,Johnson J.E.,et al. Role of tectonic stress in seepage evolution along the gas hydrate-charged Vestnesa Ridge, Fram Strait[J]. Geophysical Research Letters,2015-01-01,42(3).