火山的重力场研究

GRAVITY STUDY OF VOLCANO

利用重力方法研究火山地区地壳内物质迁移——岩浆活动是一种值得重视和采用的方法,建立高精度10^(-8)m/s^2级重力网,进行相对重力测量和绝对重力测量,设立固体潮观测台站,应用调和分析求固体潮的潮汐因子,考查这些量随时间的变化,可望探测岩浆囊内的物质迁移、监测火山地区的活动情况。

Gravity method is an important and available approach to investigating volcanic a- ctivity as mass migration in crust, Establishing microgal-order gravity network. carry- ing out relative as well as absolute gravity measurement, setting up earth tide station, resolving tidal factor with harmonic analysis, and monitoring the variations of these geophysical parameters, the mass migration in magma chamber might be detected, and the volcanic activity in volc ano areas might be monitored.