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利用张北地震前 1个月华北北部 (37～ 42°N,1 1 3～ 1 1 9°E)的气象卫星 NOAA/ AVHRR热红外遥感资料 ,提取震前热红外温度异常 ,研究其时空变化的过程和特征 ,并对热红外温度异常与地震的关系进行初步的探讨。结果表明 ,在张北地震前 1 3天沿张家口 -渤海断裂带确有显著的热红外温度异常出现。异常区域呈条带状 ,且与 NW向地质构造一致 ;温度异常的动态变化可大致分为初始、平缓发展和临震加速 3个阶段。将热红外温度异常作为一种临震前兆对强震的预报具有一定的映震效应
Based on the NOAA / AVHRR thermal infrared remote sensing data of meteorological satellites in the northern part of northern North China (37 ~ 42 ° N, 1 1 3 ~ 1 1 9 ° E) one month before the Zhangbei earthquake, the thermal infrared anomalies before the earthquake were extracted and their temporal and spatial variations The process and characteristics of the thermal infrared temperature anomalies and the relationship between the earthquake preliminary study. The results show that there is a significant anomaly of thermal infrared temperature along the Zhangjiakou-Bohai fault zone 13 days before the Zhangbei earthquake. The anomalous zone is strip-shaped and consistent with NW geological structure. The dynamic change of temperature anomaly can be roughly divided into three stages: initial, gentle development and accelerated acceleration. Taking the thermal infrared temperature anomaly as a precautionary precursor has a certain reflection effect on strong earthquakes