【摘要】 利用1999年和2003—2006年共5年的NOAA卫星热红外遥感数据,对北京及周边地区的热红外影像特征和红外亮温年变特征进行了跟踪观测、统计分析与对比研究。结果表明:①不同地质构造单元,特别是线性断裂构造在热红外影像上有清晰的显示,通过不同时期红外影像的对比研究可以很好地揭示断裂构造的空间展布及规模形态,为活动构造研究提供技术支持;②地表热红外亮温受地形、气象和活动构造等多种因素的影响,但其变化仍具有空间相关性、时间延续性和年变周期性,基于多年积累红外遥感数据的统计分析与差值处理可以有效提取红外亮温异常变化,进而研究红外异常与地震的关系;③太行山山前断裂带的红外亮温明显高于海拔仅约20 m的华北平原,意味着该断裂带是一个热红外高温异常条带,初步分析认为,其成因可能与该断裂带正处在一个地球物理异常带上有关。推测在一些存在深部地球物理异常的地区可能会出现红外辐射异常现象。更多还原

【Abstract】 We analyzed the thermal infrared images features and the annual variation features of brightness temperature using NOAA Satellite thermal infrared remote sense data of 1999,2003-2008.The results show: ①Different geological tectonic units,especially linear active faults display as clear linear high temperature anomaly belts on the thermal infrared images.Through comparative analysis of the thermal infrared images taken from many periods of time,we can obtain the active faults’ spatial distribution and patter and study the active tectonic.②The surface thermal infrared brightness temperature has the characteristics of spatial correlation,temporal continuity and annual variation period although it is influenced by many factors,such as terrain,weather and geological tectonics.Based on the statistical analysis and difference process of much data accumulated in many years.We can effectively acquire the thermal infrared brightness temperature anomaly and analyze the correlation between the anomaly and certain earthquake.(3) The brightness temperature along Taihang mountain fault is clearly higher than that in Huabei plain,where altitude is only about 20 m,which indicates that the Taihang mountain fault is a high temperature anomaly belt.The preliminary analysis concludes that the thermal anomaly belt is likely relative to geophysical anomaly existing beneath the Taihang mountain fault.We infer that thermal infrared anomaly phenomenon may appear in some geophysical anomaly belt.更多还原