昆仑山口西8.1级地震红外异常的新认识

发布时间：2018-03-19 16:42

本文选题：东昆仑断裂　切入点：昆仑山口西.级地震　出处：《地震工程学报》2016年S1期 　论文类型：期刊论文

【摘要】：对东昆仑断裂卫星红外影像的地貌特征进行地学理解的基础上,对2001年昆仑山口西8.1级地震前后的红外图像进行了进一步分析;利用红外图像差值剖面线分析法,将地震前后的遥感图像进行灰度值差分处理、红外亮温变化检测,然后对断裂带的不同段落进行红外亮温值剖面线分析。结果发现:(1)震前10天左右在东昆仑断裂带的西段区域出现明显的增温异常,震前7天出现奇特的异常云,这可能是深部上涌的气体导致的蒸发致冷效应,应是一种地球内部热动力作用引起的地球排气现象;(2)图像差值剖面线分析结果显示震前2天红外增温异常集中在两个区域:一是主震震中所在的布喀达坂峰附近;二是在宏观震中附近的库赛湖地区。与前人的研究结果相比,本文发现的异常其时、空特征更突出,可能有一定的临震指示意义。
[Abstract]:Based on the geomorphological understanding of the infrared image of the East Kunlun fault satellite, the infrared images before and after the earthquake of M = 8.1 in the west of Kunlun Mountain on 2001 were further analyzed, and the difference profile line analysis method of the infrared image was used. The remote sensing images before and after the earthquake are processed with difference of gray value, and the change of infrared bright temperature is detected. Then the infrared bright temperature profile of different sections of the fault zone is analyzed. The results show that about 10 days before the earthquake, there are obvious warming anomalies in the western segment of the East Kunlun fault zone, and strange abnormal clouds appear 7 days before the earthquake. This could be the evaporative cooling effect of deep upwelling gas, The difference profile analysis shows that two days before the earthquake, the infrared warming anomaly is concentrated in two regions: one is near Bukadaban peak, where the epicenter of the main earthquake is located, and the other is near the peak of Bukadaban, where the epicenter of the main earthquake is located. The second is in the Kussai Lake area near the macro epicenter. Compared with the previous research results, the anomaly found in this paper is more prominent in time and space characteristics, which may have a certain significance for indicating imminent earthquake.
【作者单位】：重庆市地震局;
【基金】：中国地震科技星火计划项目(XH14043)
【分类号】：P315.7

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