基于MODTRAN模型对高分五号卫星断层逸出气体探测能力的辐射模拟

发布时间：2018-03-29 03:41

本文选题：断层逸出气体　切入点：高分五号卫星　出处：《地震》2017年02期

【摘要】：地下流体监测数据和地表断层调查都显示构造活动强烈期和大地震前后活动断裂带会伴有大量气体逸出。中国即将发射的高分五号(GF-5)卫星搭载的大气环境红外甚高光谱分辨率探测仪及全谱段光谱成像仪两个传感器,主要以大气气体的探测为应用目标。本文基于两个传感器的参数设置,使用大气辐射传输模型,对断层逸出气体中的水汽、CH_4和CO_2三种气体在大气中的含量变化对卫星传感器的辐射影响进行了仿真模拟,分析了两个传感器对水汽、CH_4和CO_2气体异常的探测能力。结果表明,GF-5卫星两个红外传感器特定的光谱通道对大气水汽、CH_4和CO_2气体异常变化均有不同程度的敏感性,可以期待发展具有较高精度的相关气体遥感反演模型,用于地震的监测及预测。
[Abstract]:Underground fluid monitoring data and surface fault surveys show that large amounts of gas escape occur in active fault zones during strong tectonic activity and before and after major earthquakes. The atmospheric environment infrared (IR) carried by China's upcoming GF-5 satellite is very high. Two sensors, the hyperspectral resolution detector and the full-spectrum spectral imager, Based on the parameter setting of two sensors, the atmospheric radiative transfer model is used in this paper. In this paper, the effects of the variation of water vapor Ch _ 4 and CO_2 in the atmosphere on the radiation of the satellite sensor are simulated. The ability of the two sensors to detect water vapor CHS 4 and CO_2 gas anomalies is analyzed. The results show that the specific spectral channels of the two infrared sensors of the GF-5 satellite are sensitive to the anomalous changes of CH4 and CO_2 gases in the atmosphere. It is expected to develop a highly accurate remote sensing inversion model for seismic monitoring and prediction.
【作者单位】：地震动力学国家重点实验室中国地震局地质研究所;中国地震局地震预测研究所;中国地震局地壳应力研究所;山东科技大学测绘科学与工程学院;
【基金】：国家自然科学基金(41204038) 国家高分辨对地观测系统重大专项(31-Y30B09-9001-13/15-11)联合资助
【分类号】：P315.7

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