气候变化领域集成服务门户(CCPortal): Real-Time Earthquake Location Based on the Kalman Filter Formulation

CCPortal

DOI	10.1029/2019GL086240
	Real-Time Earthquake Location Based on the Kalman Filter Formulation
	Chen Y.; Zhang H.; Eaton D.W.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:11
英文摘要	Seismic location is an essential task for earthquake monitoring. The general practice is to locate earthquakes using arrival times from all recorded stations. However, this is not well suited for real-time applications such as the earthquake early warning, where earthquake locations need to be determined and updated as more stations are triggered. Here we have developed a real-time linear location method based on a Kalman filter formulation. It updates location and its uncertainty whenever a station is triggered. We have demonstrated its effectiveness with synthetic and real data sets in Parkfield, California in a retrospective mode. The tests show that we can obtain relatively accurate locations and reliable uncertainties for earthquakes with 4 or 5 stations triggered. In particular, without considering the station latency, accurate earthquake locations can be achieved retrospectively in about 3.3 and 2.7 s for the 2003 San Simeon Mw6.6 earthquake and 2004 Parkfield Mw6.0 earthquake, respectively. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Kalman filters; Location; Accurate location; Earthquake early warning; Earthquake location; Earthquake monitoring; Location method; Real-time application; Seismic location; Synthetic and real data; Earthquakes; accuracy assessment; data set; early warning system; Kalman filter; Parkfield earthquake 2004; San Simeon earthquake 2003; uncertainty analysis; California; United States
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170292
作者单位	School of Earth and Space Sciences, Laboratory of Seismology and Physics of Earth's Interior, University of Science and Technology of China, Hefei, China; Mengcheng National Geophysical Observatory, University of Science and Technology of China, Hefei, China; CAS Center for Excellence in Comparative Planetology, University of Science and Technology of China, Hefei, China; Department of Geoscience, University of Calgary, Calgary, Canada
推荐引用方式 GB/T 7714	Chen Y.,Zhang H.,Eaton D.W.. Real-Time Earthquake Location Based on the Kalman Filter Formulation[J],2020,47(11).
APA	Chen Y.,Zhang H.,&Eaton D.W..(2020).Real-Time Earthquake Location Based on the Kalman Filter Formulation.Geophysical Research Letters,47(11).
MLA	Chen Y.,et al."Real-Time Earthquake Location Based on the Kalman Filter Formulation".Geophysical Research Letters 47.11(2020).