收稿日期: 2011-01-12
修回日期: 2011-04-27
网络出版日期: 2011-07-10
基金资助
中国地震局地震预测研究所基本科研业务费项目（玉树地震应急项目和一般项目）（编号：02092436）资助.
Remote Sensing Signals of Atmospheric Physics and Chemistry Related to 2010 Yushu Ms 7.1 Earthquake
Received date: 2011-01-12
Revised date: 2011-04-27
Online published: 2011-07-10
利用高分辨率卫星遥感数据反演了地表温度、水汽、CO总量和CH4体积分数的时空变化，讨论了这种变化与2010年4月14日青海玉树Ms 7.1地震以及地震断裂带的关系。利用MODIS L1B数据反演的玉树地震前后的温度数据表明，在主震前亮温和地表温度出现高值，高值异常高于震前几年的同期平均温度并沿NW向断裂带分布；这与测量的玉树地区气温在3~4月高于震前10年的同期平均温度的现象一致。利用AIRS数据提取的水汽总量、CO总量和CH4体积分数数据表明，水汽总量在主震后高于前2年平均值，CO总量在地震前后也有升高变化。反演结果和地震地质资料表明在大地震前后的这些参数异常变化可能是地球深部物质运动和地下气体沿断裂带逸散引起的。研究结果表明利用高分辨率卫星遥感数据获取地表温度、湿度和大气微量组分含量的时空变化信息在地震监测、预测方面有很好的应用前景。
崔月菊，杜建国，陈志，李静，谢超，周晓成，刘雷 . 2010年玉树Ms 7.1地震前后大气物理化学遥感信息[J]. 地球科学进展, 2011 , 26(7) : 787 -794 . DOI: 10.11867/j.issn.1001-8166.2011.07.0787
The temporal and spatial variations of surface temperature, vapor total column, CO total column and CH4 volume mixing ratio were retrieved by high-resolution satellite remote sensing data. The relationships between these variations and 14 April 2010 Yushu Ms 7.1 earthquake in Qinghai Province, Northwestern China and seismic ruptures were discussed. Brightness and surface temperature retrieved using MODIS L1B data associated with Yushu Earthquake shows that the values of brightness and surface temperature were higher along the NW fault zones than in the un-faulted areas before the main shock; the higher values of surface temperature were larger than the corresponding daily mean values of ten years before, which is similar to the phenomena that measured values of air temperature before the Yushu Earthquake were higher than the corresponding daily average of last ten years. Vapor total column, CO total column and CH4 volume mixing ratio retrieved using AIRS shows that the values of vapor total column were higher than the average of last two years after the main event and CO total column also increased before and after the earthquake. Our results indicated that the variations associated with large earthquake maybe caused by the movement of deeper-earth material and degassing along faults during earthquake generation, which can be applied into monitoring and prediction of earthquake.
Key words： Satellite remote sensing; Earthquake; ; MODIS; AIRS; Yushu in ; Qinghai province
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