2022年泸定M_s6.8地震震源放气过程的卫星空间信息回溯研究
Backtracking of Satellite Spatial Information on Source Venting Process of Luding M_s6.8 Earthquake, 2022

从大气层中的气体异常源算法模型出发，给出垂直浓度梯度判定指标是判定来自本地区气体，还是远程漂移过来的。基于美国的AQUA/AIRS高光谱数据，得到空间信息的时空呼应证据——从大气层到地表路径物理信息，以及大气层到地表路径化学信息。基于泸定6.8级地震卫星空间信息与地表观测信息，通过回溯和定位，实现两者的有机结合。以可检测的算法模型，可量化的指标，可验证的地震事件，总结归纳回溯地震过程中气体释放所经历的通道和轨迹。结果表明，来自震源的物质以断层溢出气体为载体携带了大量的震源物质信息，天地同震过程中是存在着气体传输通道的。
Based on the gas anomaly source algorithm model in the atmosphere, the determination index of vertical concentration gradient is given to determine whether the gas comes from the local area or from remote drift. Based on the AQUA/AIRS hyperspectral data from the United States, the spatio-temporal echo evidence of spatial information is obtained, including the physical information of the path from the atmosphere to the surface, and the chemical information of the path from the atmosphere to the surface. Based on the Luding M6.8 seismic satellite spatial information and surface observation information, the organic combination of the two is realized through backtracking and positioning. By means of detectable algorithm model, quantifiable index and verifiable seismic event, the passage and trajectory of gas release during earthquake are summarized and traced back. The results show that the source material carries a large amount of source material information with the fault overflow gas as the carrier, and there is a gas transmission channel in the co-seismic process between earth and earth.