A time-frequency analysis of the thermal radiation background anomalies caused by large earthquakes: A case study of the Wenchuan 8.0 earthquake

doi:10.1016/j.asr.2019.09.019

NTSC-IR > 导航与通信研究室

	A time-frequency analysis of the thermal radiation background anomalies caused by large earthquakes: A case study of the Wenchuan 8.0 earthquake
	Wei, Congxin 1,2,4; Lu Xiaochun1 ; Zhang Yuansheng 2; Guo Yingxia 3; Wang Ying 2
	2020
发表期刊	ADVANCES IN SPACE RESEARCH
ISSN	0273-1177
卷号	65 期号:1 页码:435-445
摘要	Strong earthquakes have an impact on the regional thermal radiation background, which has been both observed and confirmed. This effect produces anomalies in the thermal radiation background (TRBA) and increases the difficulty of extracting a thermal radiation anomaly (TRA) that is associated with an earthquake occurring during the same time period. The extraction and identification of such anomalies has been ignored by previous studies. In this study, we investigate the time-frequency analysis (TFA) method, together with the wavelet filtering of the Daubechies method and the relative power spectrum analysis of the Fourier Welch method to extract and analyse the TRBA caused by the 2008 Wenchuan Ms 8.0 earthquake and the TRA of the 2013 Minxian-Zhangxian Ms 6.6 earthquake using data concerning the brightness temperature of a black body (TBB) from the Fengyun-2 series of geostationary meteorological satellites developed by China. The result showed that this method can effectively extract and analyse the TRBA caused by the Wenchuan earthquake and the TRA of the Minxian-Zhangxian earthquake form a complex background environment. Furthermore, we discussed the impact of the earthquake on the TRBA and segmented the process. The impact is mainly reflected by three aspects; the characteristic period of the TRBA changes, the TRBA occurs at the same time every year, which is identical to the time at which the earthquake anomaly occurred, and the impact process is in stages. We also summarized the correlation between the characteristic parameters of a TRA and the regional thermal radiation background, geography, and climatic factors. (C) 2019 Published by Elsevier Ltd on behalf of COSPAR.
关键词	Remote sensing Temporal-spatial anomalies Wenchuan Ms 8.0 earthquake Minxian-Zhangxian Ms 6.6 earthquake Thermal radiation background
资助者	Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration
DOI	10.1016/j.asr.2019.09.019
关键词[WOS]	SATELLITE ; TEMPERATURE ; RUPTURE
语种	英语
资助项目	Institute of Earthquake Science, China Earthquake Administration[2015IESLZ02]
资助者	Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration ; Institute of Earthquake Science, China Earthquake Administration
WOS研究方向	Engineering ; Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences
WOS类目	Engineering, Aerospace ; Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000509784600035
出版者	ELSEVIER SCI LTD
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://210.72.145.45/handle/361003/9592
专题	导航与通信研究室
通讯作者	Lu Xiaochun
作者单位	1.Chinese Acad Sci, Natl Time Serv Ctr, Xian 710600, Peoples R China 2.China Earthquake Adm, Lanzhou Inst Seismol, Lanzhou 730000, Peoples R China 3.China Earthquake Adm, Earthquake Adm Jiangsu Prov, Nanjing 210014, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Wei, Congxin,Lu Xiaochun,Zhang Yuansheng,et al. A time-frequency analysis of the thermal radiation background anomalies caused by large earthquakes: A case study of the Wenchuan 8.0 earthquake[J]. ADVANCES IN SPACE RESEARCH,2020,65(1):435-445.
APA	Wei, Congxin,Lu Xiaochun,Zhang Yuansheng,Guo Yingxia,&Wang Ying.(2020).A time-frequency analysis of the thermal radiation background anomalies caused by large earthquakes: A case study of the Wenchuan 8.0 earthquake.ADVANCES IN SPACE RESEARCH,65(1),435-445.
MLA	Wei, Congxin,et al."A time-frequency analysis of the thermal radiation background anomalies caused by large earthquakes: A case study of the Wenchuan 8.0 earthquake".ADVANCES IN SPACE RESEARCH 65.1(2020):435-445.