副高的地气耦合效应

中国是季风气候，每年西太平洋副高要北移和南退。在它的边缘上降大雨，有时会致洪。本指出这种副高压在地面上时，在其边缘上地层会产生引张环。此环内地下水铁于逸出，可迭加在绕副高边缘运移的水汽中，如有北方冷空气南下相遇，则增加降雨强度。另外，引张环中还有温室气体逸出，可使低层大气增温，这有助于副高边缘区降大雨致洪。这就是副高的地－气耦合效应。如果引张环和外侧有地震活动，则地下活动相对剧烈，副高的地－气耦合效应加强，同时也有利于副高向地震活动区移动。

COUPLING EFFECT OF THE EARTH-GAS IN SECONDARY HIGH BAROMETRIC PRESSURE

China is monsoon climate,and the secondary high barometric pressure in western Pacific ocean moves to north or south in every year.At the edge of this pressure,it will rain heavily and sometimes may flood.When this pressure is around the earth,it will form a extension circle in the stratum at the edge.the underground gas in the circle is easily overflowed,and it may strenghen raining if the north cold gas moves to the south.On the otherwise the warm gas in the circle overflowed,and this may warm the lower gas around the earth,and may rain heavily or flood.And this is the earth gas coupling effect.If there was seismicity in the extension circle or outer,it would also strengthen the subsurface activity and the coupling effect,and it would help the secondary high barometric pressure move to the seismicity region.