大地测量与地球动力学2026，Vol.46Issue(6)：783-789,7.DOI:10.14075/j.jgg.2025.09.325
汶川MS8.0地震前卫星红外异常研究
Satellite Infrared Anomalies before the MS8.0 Wenchuan Earthquake
摘要
Abstract
Based on over 20 years of MODIS satellite remote sensing infrared data,we extract bright-ness temperature low-frequency information using anomaly method and spatial anomaly superposition method,and investigate the temporal and spatial evolution and characteristics of infrared radiation a-nomalies before the WenchuanMS8.0earthquake on May 12,2008.The results show that there was a significant radiation enhancement anomaly before the earthquake.In terms of time,from 2006 to 2007,there was a trend of radiation enhancement in the core area located west of the epicenter.Con-versely,from 2008 until the earthquake occurrence,this radiation enhancement exhibited a weakening trend.Spatially,the core area of radiation enhancement is located in the eastern section of Bayan Har and Qiangtang blocks,encompassing approximately 5.8 × 105 km2.The spatial distribution character-istics are consistent with the dynamic background of Wenchuan earthquake.关键词
汶川MS8.0地震/红外/异常/卫星遥感Key words
Wenchuan MS8.0 earthquake/infrared/anomaly/satellite remote sensing分类
天文与地球科学引用本文复制引用
张铁宝,杨星,路茜,管勇,包雨睿,王玮铭,廖晓峰..汶川MS8.0地震前卫星红外异常研究[J].大地测量与地球动力学,2026,46(6):783-789,7.基金项目
中国地震局地震科技星火计划(XH24034A). （XH24034A）
