气候变化领域集成服务门户(CCPortal): Thermal regime and slab dehydration beneath the Izu-Bonin arc: Implications for fast and slow subduction earthquakes

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DOI	10.1111/ter.12568
	Thermal regime and slab dehydration beneath the Izu-Bonin arc: Implications for fast and slow subduction earthquakes
	Zhu, Weiling; Ji, Yingfeng; Qu, Rui; Xie, Chaodi; Yoshioka, Shoichi; Zeng, Deng
通讯作者	Ji, YF ; Qu, R (通讯作者)
发表日期	2022
ISSN	0954-4879
EISSN	1365-3121
起始页码	103
结束页码	112
卷号	34 期号:2
英文摘要	The transition from cold forearc to hot arc is considered fundamental to subduction dynamics. However, the range and depth of the cold nose changing significantly along the strike are difficult to constrain. By incorporating the three-dimensional high-resolution slab topography and MORVEL plate motion field to constrain thermomechanical modelling, we estimate the subduction thermal state and petrological dehydration in Izu-Bonin. The multilayered hydrothermal regime gradually transitions from cold to less cold forearc, associated with a large-scale subduction dewatering process varying along the strike. The dehydration embrittlement resulting from eclogitization and harzburgitization influences the occurrence of fast to slow earthquakes on megathrusts. Impressively, the cold nose is constrained to a depth of 60 km between the arc and Moho-depth plate interface. The lowered temperature and delay of rock harzburgitization in the cold center of the subducted plate at depth contribute to the occurrence of deep earthquakes below the hot backarc interface.
关键词	HEAT-FLOW SEISMICITY DISTRIBUTION SOUTHWEST JAPAN PLATE ZONE PACIFIC METAMORPHISM TOMOGRAPHY DEPTH MODEL
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:000722060500001
来源期刊	TERRA NOVA
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/260664
推荐引用方式 GB/T 7714	Zhu, Weiling,Ji, Yingfeng,Qu, Rui,et al. Thermal regime and slab dehydration beneath the Izu-Bonin arc: Implications for fast and slow subduction earthquakes[J]. 中国科学院青藏高原研究所,2022,34(2).
APA	Zhu, Weiling,Ji, Yingfeng,Qu, Rui,Xie, Chaodi,Yoshioka, Shoichi,&Zeng, Deng.(2022).Thermal regime and slab dehydration beneath the Izu-Bonin arc: Implications for fast and slow subduction earthquakes.TERRA NOVA,34(2).
MLA	Zhu, Weiling,et al."Thermal regime and slab dehydration beneath the Izu-Bonin arc: Implications for fast and slow subduction earthquakes".TERRA NOVA 34.2(2022).