基于RST算法提取乌什MS7.1地震地表温度异常
EXTRACTION OF SURFACE TEMPERATURE ANOMALY FROM WUSHI MS7.1 EARTHQUAKE BASED ON RST ALGORITHM
伊尔潘·艾尼瓦尔 1李晓东 1朱文振 1胡安尼西·巴合达吾列提 1何欢 1艾萨·伊斯马伊力1
作者信息
- 1. 新疆维吾尔自治区地震局,新疆乌鲁木齐 830011
- 折叠
摘要
为探讨RST算法在新疆地区地震热红外异常提取中的适用性,以乌什MS7.1地震为例,构建研究区MODIS地表温度数据集,并对数据集进行逐像元时间序列趋势去除后,利用RST算法提取乌什MS7.1地震地表温度异常信息.结果表明:乌什MS7.1地震地表温度异常的变化过程分为"出现—消失—再出现—扩大—达到最大—消失"6个阶段;乌什MS7.1地震的地表温度异常区域大致沿构造带的走向分布;乌什MS7.1地震发生在地表温度异常面积出现最大值后的第99天.利用MODIS数据结合RST算法提取地震热红外异常在新疆地区相关研究中具有一定的可行性.
Abstract
In order to explore the applicability of RST algorithm in the extraction of seismic thermal infrared anomalies in Xinjiang region,the MODIS land surface temperature data set of Wushi MS7.1 earthquake was constructed,and after removing the pixel-by-pixel time series trend of the data set,RST algorithm was used to extract the surface temperature anomaly information of Wushi MS7.1 earthquake.The results show that the change process of surface temperature anomaly in Wushi MS7.1 earthquake can be divided into six stages:emergence-disappearance-reappearance-expansion-maximum-disappearance;The abnormal area of surface temperature of Wushi MS7.1 earthquake is distributed along the strike of tectonic zone.Wushi MS7.1 earthquake occurred 99 days after the maximum surface temperature anomaly.It is feasible to extract seismic thermal infrared anomaly by combining MODIS data with RST algorithm in relevant research of Xinjiang region.
关键词
乌什MS7.1地震/地表温度异常/时间序列趋势去除/RST算法Key words
Wushi MS7.1 earthquake/Surface temperature anomaly/Time series trend removal/RST algorithm引用本文复制引用
基金项目
中国地震局地震预测开放基金项目(XH24008D)
新疆维吾尔自治区自然基金特培项目(2022D03031)
出版年
2024
NETL
NSTL
万方数据