Emitting Gases from the Earth in Seismic Areas and Outgoing Spectral Radiation at the Top of the Atmosphere
临震前地球放气与大气顶射出光谱辐射

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.