Parameters and a magnitude moment relationship from small earthquakes observed during hydraulic fracturing experiments in crystalline rocks
Parameters and a magnitude moment relationship from small earthquakes observed during hydraulic fracturing experiments in crystalline rocks
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结晶岩石水力压裂实验中观察到的小地震的参数和震级矩关系
DOI：
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发表时间：
1982
期刊：
影响因子：
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通讯作者：
C. Pearson
中科院分区：
文献类型：
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作者：
C. Pearson
使用从地震频谱估计的源参数和从尾波长度估计的震级，我们证明了矩和震级之间的对数线性关系对于震级低至-6的事件成立。使用新墨西哥州芬顿山干热岩 (HDR) 地热场水力压裂实验诱发的事件作为数据集，我们发现震级 M 和地震矩 (Mo) 之间的关系为
log(Mo)=17.27+0.77M。
此外，地震矩与震源半径 (r) 之间的线性关系对于芬顿山微地震也成立。对芬顿山数据的分析得出以下关系。
log(r)=2.28+0.19log(Mo)。
Using source parameters estimated from seismic spectra and magnitudes estimated from coda lengths, we demonstrate that the log-linear relationship between moment and magnitude holds for events with magnitudes as low as −6. Using, as a data set, events induced by hydraulic fracturing experiments at the Fenton Hill, New Mexico, Hot Dry Rock (HDR) geothermal site, we find that the relationship between magnitude M and seismic moment (Mo) is
log(Mo)=17.27+0.77M.
Moreover, the linear relationship between seismic moment and source radius (r) holds for the Fenton Hill microearthquakes. Analyses of the Fenton Hill data yield the following relationship.
log(r)=2.28+0.19log(Mo).