Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL081528 |
Tsunamigenic Splay Faults Imply a Long-Term Asperity in Southern Prince William Sound, Alaska | |
Liberty, L. M.1; Brothers, D. S.2; Haeussler, P. J.3 | |
2019-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:7页码:3764-3772 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Coseismic slip partitioning and uplift over multiple earthquake cycles is critical to understanding upper-plate fault development. Bathymetric and seismic reflection data from the 1964 Mw9.2 Great Alaska earthquake rupture area reveal sea floor scarps along the tsunamigenic Patton Bay/Cape Cleare/Middleton Island fault system. The faults splay from a megathrust where duplexing and underplating produced rapid exhumation. Trenchward of the duplex region, the faults produce a complex deformation pattern from oblique, south-directed shortening at the Yakutat-Pacific plate boundary. Spatial and temporal fault patterns suggest that Holocene megathrust earthquakes had similar relative motions and thus similar tsunami sources as in 1964. Tsunamis during future earthquakes will likely produce similar run-up patterns and travel times. Splay fault surface expressions thus relate to plate boundary conditions, indicating millennial-scale persistence of this asperity. We suggest structure of the subducted slab directly influences splay fault and tsunami generation landward of the frontal subduction zone prism. |
英文关键词 | seismic imaging megathrust tsunami source splay faults asperity |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000465836200021 |
WOS关键词 | NORTHERN GULF ; EARTHQUAKE ; SEDIMENT ; LANDSLIDES ; TERRANE ; RUPTURE ; UPLIFT ; ZONE |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/182369 |
专题 | 气候变化 |
作者单位 | 1.Boise State Univ, Dept Geosci, Boise, ID 83725 USA; 2.US Geol Survey, Pacific Coastal & Marine Sci Ctr, Santa Cruz, CA USA; 3.US Geol Survey, Anchorage, AK USA |
推荐引用方式 GB/T 7714 | Liberty, L. M.,Brothers, D. S.,Haeussler, P. J.. Tsunamigenic Splay Faults Imply a Long-Term Asperity in Southern Prince William Sound, Alaska[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(7):3764-3772. |
APA | Liberty, L. M.,Brothers, D. S.,&Haeussler, P. J..(2019).Tsunamigenic Splay Faults Imply a Long-Term Asperity in Southern Prince William Sound, Alaska.GEOPHYSICAL RESEARCH LETTERS,46(7),3764-3772. |
MLA | Liberty, L. M.,et al."Tsunamigenic Splay Faults Imply a Long-Term Asperity in Southern Prince William Sound, Alaska".GEOPHYSICAL RESEARCH LETTERS 46.7(2019):3764-3772. |
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