A network of superconducting gravimeters detects submicrogal coseismic gravity changes
A network of superconducting gravimeters detects submicrogal coseismic gravity changes
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DOI：
10.1126/science.1101875
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发表时间：
2004-10-15
期刊：
影响因子：
56.9
通讯作者：
Okubo, S
中科院分区：
文献类型：
--
作者：
Imanishi, Y;Sato, T;Okubo, S
利用超导重力仪区域网络的高分辨率连续重力记录，我们发现了与最近一次大地震有关的重力加速度的永久变化。探测到的重力加速度变化小于10（-8）米秒（-2）（1微伽利略，约为地表重力加速度的10（-9）倍），与位错模型计算的理论值一致。超导重力法有助于研究与构造过程有关的长期重力变化。
With high-resolution continuous gravity recordings from a regional network of superconducting gravimeters, we have detected permanent changes in gravity acceleration associated with a recent large earthquake. Detected changes in gravity acceleration are smaller than 10(-8) meters seconds(-2) (1 micro-Galileo, about 10(-9) times the surface gravity acceleration) and agree with theoretical values calculated from a dislocation model. Superconducting gravimetry can contribute to the studies of secular gravity changes associated with tectonic processes.