气候变化领域集成服务门户(CCPortal): Characteristic Background of Microwave Brightness Temperature (MBT) and Optimal Microwave Channels for Searching Seismic MBT Anomaly in and Around the Qinghai-Tibet Plateau

CCPortal

DOI	10.1109/TGRS.2023.3299643
	Characteristic Background of Microwave Brightness Temperature (MBT) and Optimal Microwave Channels for Searching Seismic MBT Anomaly in and Around the Qinghai-Tibet Plateau
	Qi, Yuan; Wu, Lixin; Mao, Wenfei; Ding, Yifan; Liu, Yingjia; Wang, Xiao
发表日期	2023
ISSN	0196-2892
EISSN	1558-0644
卷号	61
英文摘要	Microwave radiations from ground objects are capable of penetrating the shallow surface, vegetation, and atmosphere, but they are also contaminated by many natural factors. Microwave brightness temperature (MBT) data at different channels (frequencies and polarizations) have been used for studying seismic anomalies for decades. However, there lacks an in-depth research on how MBT responds to the natural but nonseismic (NbNS) factors, and the microwave channels used might not be optimal for earthquake study, which might bias the reliability of the retrieved MBT anomalies. In this study, the monthly mean MBT backgrounds (MMMBs) in and around the Qinghai-Tibet Plateau (QTP) were retrieved by using MBT data from the AMSR-2 sensors. The spatiotemporal characteristics of the MMMBs were carefully investigated and found to behave a significant spatiotemporal differentiation. The NbNS factors with profound influences on MMMBs were theoretically analyzed, and the sensitive microwave channels of these factors affecting MBT were revealed. Furthermore, the set of sensitive channels of different NbNS factors was used to determine reversely the optimal channels for searching weak seismic MBT anomalies in the QTP. The distribution map of the optimal channels has been then employed to explore MBT anomalies associated with ten large earthquakes (EQs) in the QTP, since 1997. The case studies demonstrated the good performances of the suggested channels and well verified their applicability. This study is of scientific meanings for understanding the MBT background in and around the QTP and has guiding significances for microwave channel selection of global seismic MBT anomaly study.
关键词	Microwave brightness temperature (MBT)natural but nonseismic (NbNS) factors optimal channels Qinghai-Tibet Plateau (QTP)seismic anomaly
英文关键词	AMSR-E; EARTHQUAKE; SATELLITE; SENSITIVITY; VEGETATION
WOS研究方向	Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001050018600009
来源期刊	IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282989
作者单位	Central South University
推荐引用方式 GB/T 7714	Qi, Yuan,Wu, Lixin,Mao, Wenfei,et al. Characteristic Background of Microwave Brightness Temperature (MBT) and Optimal Microwave Channels for Searching Seismic MBT Anomaly in and Around the Qinghai-Tibet Plateau[J],2023,61.
APA	Qi, Yuan,Wu, Lixin,Mao, Wenfei,Ding, Yifan,Liu, Yingjia,&Wang, Xiao.(2023).Characteristic Background of Microwave Brightness Temperature (MBT) and Optimal Microwave Channels for Searching Seismic MBT Anomaly in and Around the Qinghai-Tibet Plateau.IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING,61.
MLA	Qi, Yuan,et al."Characteristic Background of Microwave Brightness Temperature (MBT) and Optimal Microwave Channels for Searching Seismic MBT Anomaly in and Around the Qinghai-Tibet Plateau".IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING 61(2023).