气候变化领域集成服务门户(CCPortal): The 2020 Mw 5.5 Mizoram earthquake and associated swarm activity in the junction of the Surma Basin and Indo-Myanmar Subduction Region

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DOI	10.1007/s11069-021-04924-1
	The 2020 Mw 5.5 Mizoram earthquake and associated swarm activity in the junction of the Surma Basin and Indo-Myanmar Subduction Region
	Bharali B.; Rakshit R.; Dinpuia L.; Saikia S.; Baruah S.
发表日期	2021
ISSN	0921030X
英文摘要	A severely felt earthquake of Mw 5.5 occurred on 22 June 2020, in the Champhai district of Mizoram, North East Region (NER) of India, in the vicinity of the Indo-Myanmar subduction zone. This earthquake was associated with a swarm type of activity; six earthquakes of Mw 4.0–5.1 and some 16 earthquakes of Mw 3.0–3.9 occurred almost within two months like a swarm which caused much panic in the Mizoram state and neighbouring region. The mainshock of Mw 5.5 was preceded by an earthquake of Mw 5.1 on the previous day, 21 June 2020, in the capital city Aizawl, ~ 70 km northwest of Champhai. All of these events originated at shallow depth (~ 10–30 km) and occurred in the intra-plate zone of the subducting Indian plate. Fault plane solution of the mainshock indicates strike-slip faulting that matches fairly well with the transverse Mat Fault in the Outer Indo-Burma Wedge (OIBW). Macroseismic investigation of the mainshock at some 46 sites shows the maximum intensity of VIII (MMI scale) at the epicentral track. An attenuation relation between intensity and hypocentral distance is derived, which may be helpful to assess seismic hazards in this region. © 2021, The Author(s), under exclusive licence to Springer Nature B.V.
关键词	Active fault Fault plane solutions Mizoram Northeast India Swarm activity
语种	英语
来源期刊	Natural Hazards
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/206117
作者单位	Department of Geology, Pachhunga University College, Aizawl, Mizoram, India; Department of Applied Geology, Dibrugarh University, Dibrugarh, Assam, India; Centre for Disaster Management, Mizoram University, Aizawl, Mizoram, India; National Center for Seismology, Ministry of Earth Sciences, New Delhi, India; Geo Sciences & Technology Division, CSIR-North East Institute of Science & Technology, Jorhat, Assam, India
推荐引用方式 GB/T 7714	Bharali B.,Rakshit R.,Dinpuia L.,et al. The 2020 Mw 5.5 Mizoram earthquake and associated swarm activity in the junction of the Surma Basin and Indo-Myanmar Subduction Region[J],2021.
APA	Bharali B.,Rakshit R.,Dinpuia L.,Saikia S.,&Baruah S..(2021).The 2020 Mw 5.5 Mizoram earthquake and associated swarm activity in the junction of the Surma Basin and Indo-Myanmar Subduction Region.Natural Hazards.
MLA	Bharali B.,et al."The 2020 Mw 5.5 Mizoram earthquake and associated swarm activity in the junction of the Surma Basin and Indo-Myanmar Subduction Region".Natural Hazards (2021).