临震前地球放气与大气顶射出光谱辐射  

Emitting Gases from the Earth in Seismic Areas and Outgoing Spectral Radiation at the Top of the Atmosphere

作　　者：汪宏七[1] 赵高祥[1] 

机构地区：[1]中国科学院大气物理研究所,北京100029

出　　处：《大气科学》1994年第4期405-412,共8页Chinese Journal of Atmospheric Sciences

基　　金：中国科学院大气物理研究所所长择优基金

摘　　要：通过不同分辨率的辐射传输计算，分析了大气中CH4浓度增加对大气顶射出光谱辐射率的影响。在某些波段，射出光谱辐射率在CH4浓度显著增加时会有明显的减少，而气溶胶和水汽等的变化造成的影响又较小。这种通道的射出辐射可反映出大气中CH4浓度的增加，从而有可能通过卫星辐射测量对地震前孕震区大气中CH4浓度增加这一地震前兆进行监测。Through radiative transfer calculations with different spectral resolution, the effects of increasingCH4 concentration in the atmosphere on the outgoing spectral radiances at the top of the atmospherehave been analyzed. It is found that at some frequencies, the outgoing radiances will diminishsignificantly with increasing CH4 concentration obviously, at the same time, the influences caused bythe variations of aerosols and water vapor are rather small. So that the increase of CH4 concentration inthe atmosphere can be well reflected by the outgoing radiances at these frequencies, and it might be pos-sible to monitor such an earthquake precursor, the pronounced increase of CH4 concentration in theatmosphere in seismic areas, through satellite radiative measurements.

关 键 词：甲烷 地震前兆 大气 光谱辐射 

分 类 号：P315.7[天文地球—地震学]