地震工程学报Issue(4)：1073-1076,4.DOI:10.3969/j.issn.1000-0844.2015.04.1073
祁连山地震带中强地震前热红外异常研究
Thermal Infrared Anomalies prior to the M S≥ 5 Earthquakes in the Qilianshan Seismic Zone
摘要
Abstract
Using thermal infrared data from NOAA,the temperature-time sequences of epifocal areas in small windows were scanned prior to 13 earthquakes that occurred in the Qilianshan seis-mic zone from 1 991 to 2004.Next,the continuing thermal infrared temperature-time sequences over time and the abstract surface temperature abnormality phenomena before these earthquakes occurred were obtained.The research results found that there were thermal infrared anomalies pri-or to 38% of the earthquakes,the surface temperature during some earthquakes increased abnor-mally,and the surface temperature during others decreased abnormally.These results demonstrate the complexity of the inducing factors of earthquakes.The amplitude of anomalies were consist-ently 2°C to 3°C,and the anomalies always appeared two weeks before the earthquakes occurred. It was also found that when the earthquake magnitude was a maximum,the surface temperature anomaly phenomenon was the most noticeable.For example,in the MS 6.1 earthquake of 2003 in Minle.However,not all temperature anomaly phenomena for earthquakes MS > 6.0 were noticea-ble in comparison to earthquakes in the range of 5.0 < MS < 6.0.关键词
热红外异常/祁连山地震带/遥感Key words
thermal infrared anomaly/Qilianshan seismic zone/remote sensing分类
天文与地球科学引用本文复制引用
钟美娇,张元生,张璇..祁连山地震带中强地震前热红外异常研究[J].地震工程学报,2015,(4):1073-1076,4.基金项目
甘肃省地震局地震科技发展基金(2014M02) （2014M02）
甘肃强震危险性跟踪项目(2014003-01) （2014003-01）
