气候变化领域集成服务门户(CCPortal): Variations in Wedge Earthquake Distribution along the Strike Underlain by Thermally Controlled Hydrated Megathrusts

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DOI	10.3390/app11167268
	Variations in Wedge Earthquake Distribution along the Strike Underlain by Thermally Controlled Hydrated Megathrusts
	Qu, Rui; Ji, Yingfeng; Zhu, Weiling
通讯作者	Ji, YF ; Zhu, WL (通讯作者)
发表日期	2021
EISSN	2076-3417
卷号	11 期号:16
英文摘要	Featured Application Resource and environmental effects. Accretionary wedge earthquakes usually occur in the overriding crust close to the trench or above the cold nose of the mantle wedge. However, the mechanism and temperature properties related to the slab dip angle remain poorly understood. Based on 3D thermal models to estimate the subduction wedge plate temperature and structure, we investigate the distribution of wedge earthquakes in Alaska, which has a varying slab dip angle along the trench. The horizontal distance of wedge-earthquake hypocenters significantly increases from the Aleutian Islands to south-central Alaska due to a transition from steep subduction to flat subduction. Slab dehydration inside the subducted Pacific plate indicates a simultaneous change in the distances between the intraslab metamorphic fronts and the Alaskan Trench at various depths, which is associated with the flattening of the Pacific plate eastward along the strike. The across-arc width of the wedge-earthquake source zone is consistent with the across-arc width of the surface high topography above the fully dehydrated megathrust, and the fluid upwelling spontaneously influences wedge seismotectonics and orogenesis.
关键词	HEAT-FLOW DATA MANTLE WEDGE GEOTHERMAL GRADIENT SLAB DEHYDRATION SUBDUCTION ZONES JAPAN PACIFIC MODELS ALASKA ROCKS
英文关键词	wedge earthquakes; thermal regime; subduction process
语种	英语
WOS研究方向	Chemistry ; Engineering ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied
WOS记录号	WOS:000688698000001
来源期刊	APPLIED SCIENCES-BASEL
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260210
推荐引用方式 GB/T 7714	Qu, Rui,Ji, Yingfeng,Zhu, Weiling. Variations in Wedge Earthquake Distribution along the Strike Underlain by Thermally Controlled Hydrated Megathrusts[J]. 中国科学院青藏高原研究所,2021,11(16).
APA	Qu, Rui,Ji, Yingfeng,&Zhu, Weiling.(2021).Variations in Wedge Earthquake Distribution along the Strike Underlain by Thermally Controlled Hydrated Megathrusts.APPLIED SCIENCES-BASEL,11(16).
MLA	Qu, Rui,et al."Variations in Wedge Earthquake Distribution along the Strike Underlain by Thermally Controlled Hydrated Megathrusts".APPLIED SCIENCES-BASEL 11.16(2021).