摘要
研究了粘弹性半空间内膨胀（Ｍｏｇｉ模型）引起的地表垂直位移和重力变化，推导了Ｍａｘｗｅｌｌ半空间模型的解析计算公式。数值结果表明，地表垂直位移、重力变化以及重力变化与地表垂直位移之比受介质流变特性的影响很大。因此，在解释和模拟火山区、地壳隆起区、地热场等长期地表形变和重力观测时需考虑介质的流变特性影响。
Surface vertical displacements and gravity changes caused by a magmatic intrusion are investigated in a viscoelastic half space.An analytical formula in the Maxwell half space is developed.come numerical results indecate that the Earth's rheology has considerable effects on surface vertical displacements and gravity changes. Thus, the effects of earth's rheology on surface vertical displacements and gravity changes have to be taken into account when long-term observations of vertical displacements and gravity are interpreted in volcanic areas and crustal swell.
出处
《地壳形变与地震》
CSCD
1996年第2期8-11,共4页
Crustal Deformation and Earthquake
基金
中科院动力大地测量开放实验室资助
关键词
垂直形变
重力值
粘弹性介质
地表位移
vertical deformetion, gravity value, viscoelastic medium
