Scaling relations for seismic events induced by mining
Scaling relations for seismic events induced by mining
复制标题
采矿引起的地震事件的标度关系
DOI：
10.1007/bf00878631
复制
发表时间：
1995
影响因子：
2
通讯作者：
S. Gibowicz
中科院分区：
文献类型：
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作者：
S. Gibowicz
收集了南非、加拿大、波兰和德国地下矿山诱发的1575次地震的地震矩和S波拐角频率值，研究了它们的标度关系。649个事件的P波角频率值也可用。这些地震的矩为5 × 103 ~ 2 × 1015 N·m（矩震级为-3.6 ~4.1），S波转折频率为0.7 ~ 4438 Hz，P波转折频率为5 ~ 4010 Hz。S波和P波拐角频率对数之间的回归线斜率等于1，P波拐角频率平均比S波高25%左右。在对大、中强地震的研究中发现，应力降与地震矩近似无关，即地震矩与拐角频率的三次方成反比。这种行为在这里考虑的大多数数据中得到了证实。大事件和小事件之间的相似性似乎在矩震级低于-2.5的事件中发生了断裂。但在同一拐角频率范围内，不同矿区的地震矩平均值差异很大。
The values of seismic moment andS-wave corner frequency from 1575 seismic events induced in South African, Canadian, Polish, and German underground mines were collected to study their scaling relations. The values ofP-wave corner frequency from 649 events were also available. Seismic moments of these events range from 5*103 to 2*1015 N·m (moment magnitude is from −3.6 to 4.1), theS-wave corner frequency ranges from 0.7 to 4438 Hz, and theP-wave corner frequency is between 5 and 4010 Hz. The slope of a regression line between the logarithm ofS- andP-wave corner frequencies is equal to one, and the corner frequencies ofP waves are higher than those ofS waves on the average by about 25 percent. In studies of large and moderate earthquakes it has been found that stress drop is approximately independent of the seismic moment, which means that seismic moment is inversely proportional to the third power of corner frequency. Such a behavior was confirmed for most of the data considered here. A breakdown in the similarity betwen large and small events seems to occur for the events with moment magnitude below −2.5. The average values of seismic moment referred to the same range of corner frequency, however, are vastly different in various mining areas.
DOI：
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发表时间：
1975-10
期刊：
--
影响因子：
--
作者：
H. Kanamori;D. L. Anderson
通讯作者：
H. Kanamori;D. L. Anderson