区域红外亮温背景场建立方法及初步应用  

Method for Constructing Regional Brightness Temperature Background Field and its Preliminary Aplication

作　　者：温少妍[1,2] 屈春燕[2] 闫丽莉[2] 宋冬梅[1] 万剑华[1] 单新建[1] 

机构地区：[1]中国石油大学(华东),山东青岛266555 [2]中国地震局地质研究所,地震动力学国家重点实验室,北京100029

出　　处：《地震》2011年第2期59-67,共9页Earthquake

基　　金：国家科技支撑项目(2008BAC35B03-04);行业专项(200708049);国家自然科学基金(40940020;40772106)共同资助

摘　　要：本文主要利用NOAA/AVHRR热红外亮温图像建立活动构造区域亮温背景场的方法,对背景场建立过程中NOAA图像的几何精校正、云和干扰噪点、噪线的去除等关键问题进行了分析,并提出相应的解决方法。在此基础上,利用多年的NOAA卫星资料,建立了首都圈地区（38°~42°N,112°~118°E）的旬、月、年不同时间尺度上的亮温背景场,并进行了分析。结果表明,首都圈地区的亮温背景场变化主要受季节和地形因素的影响,时间维上整体表现为夏高冬低的年变特征,符合季节变化规律;空间维上总体表现为东南部华北平原区亮温高,西北部随海拔高程的增加而亮温逐渐降低为特征。This paper presents a method for constructing brightness temperature background field based on NOAA/AVHRR thermal datasets in tectonic activity region.We emphatically analyzed some key problems including geometric precision correction,removing the influence of cloud and noise in the process of building background field and the corresponding solution are proposed.On this basis,we established the brightness temperature background field at several scales such as in a period of ten-days,a month and a year in the Capital area of China（112°～118°E,38°～42°N） using NOAA18 thermal infrared images of years.By analyzing the multi-years average background field,we can see that the brightness temperature background field variations are influenced mainly by the season and terrain.In general,the temperature is higher in summer and lower in winter,which agrees with the seasonal changing pattern.And meanwhile it is higher in southeast of north China plain.However,in northwest mountain area,the temperature changes with height contrarily.

关 键 词：红外遥感 校正方法 背景场 

分 类 号：P315[天文地球—地震学]