globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.epsl.2017.12.033
Scopus记录号: 2-s2.0-85040121550
论文题名:
Upper-plate splay fault earthquakes along the Arakan subduction belt recorded by uplifted coral microatolls on northern Ramree Island, western Myanmar (Burma)
作者: Shyu J.B.H.; Wang C.-C.; Wang Y.; Shen C.-C.; Chiang H.-W.; Liu S.-C.; Min S.; Aung L.T.; Than O.; Tun S.T.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 484
起始页码: 241
结束页码: 252
语种: 英语
英文关键词: coastal uplift ; coral microatolls ; Myanmar ; Ramree Island ; upper-plate splay faults ; U–Th dating
Scopus关键词: Earthquake effects ; Faulting ; Geophysics ; Hazards ; Plates (structural components) ; Seismology ; Structural geology ; Tsunamis ; Coastal uplift ; coral microatolls ; Myanmars ; Ramree Island ; Upper plate ; Earthquakes ; atoll ; coastal zone ; earthquake event ; earthquake magnitude ; fault ; seismic hazard ; subduction zone ; thorium ; uplift ; uranium series dating ; Myanmar ; Ramree Island ; Anthozoa
英文摘要: Upper-plate structures that splay out from the megathrusts are common features along major convergent plate boundaries. However, their earthquake and tsunami hazard potentials have not yet received significant attention. In this study, we identified at least one earthquake event that may have been produced by an upper-plate splay fault offshore western Myanmar, based on U–Th ages of uplifted coral microatolls. This event is likely an earthquake that was documented historically in C.E. 1848, with an estimated magnitude between 6.8 and 7.2 based on regional structural characteristics. Such magnitude is consistent with the observed co-seismic uplift amount of ∼0.5 m. Although these events are smaller in magnitude than events produced by megathrusts, they may produce higher earthquake and tsunami hazards for local coastal communities due to their proximity. Our results also indicate that earthquake events with co-seismic uplift along the coast may not necessarily produce a flight of marine terraces. Therefore, using only records of uplifted marine terraces as megathrust earthquake proxies may overlook the importance of upper-plate splay fault ruptures, and underestimate the overall earthquake frequency for future seismic and tsunami hazards along major subduction zones of the world. © 2017 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110080
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Department of Geosciences, National Taiwan University, Taipei, Taiwan; Earth Observatory of Singapore, Nanyang Technological University, Singapore; High-precision Mass Spectrometry and Environment Change Laboratory (HISPEC), Department of Geosciences, National Taiwan University, Taipei, Taiwan; Department of Geology, Yangon University, Yangon, Myanmar; Myanmar Earthquake Committee, Myanmar Engineering Society, Yangon, Myanmar; Department of Meteorology and Hydrology, Yangon, Myanmar

Recommended Citation:
Shyu J.B.H.,Wang C.-C.,Wang Y.,et al. Upper-plate splay fault earthquakes along the Arakan subduction belt recorded by uplifted coral microatolls on northern Ramree Island, western Myanmar (Burma)[J]. Earth and Planetary Science Letters,2018-01-01,484
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