A quantitative evaluation of the annual variation in teleseismic detection capability at Syowa Station, Antarctica
A quantitative evaluation of the annual variation in teleseismic detection capability at Syowa Station, Antarctica
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南极昭和站远震探测能力年变化的定量评价
DOI：
10.1016/j.polar.2014.10.002
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发表时间：
2015
期刊：
影响因子：
1.8
通讯作者：
and Masaki Kanao
中科院分区：
文献类型：
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作者：
Takaki Iwata;and Masaki Kanao
在这项研究中，我们评估了位于南极洲东部的昭和站（69.0°S，39.6°E）远震探测能力的年度变化，这种变化在之前的研究中已经注意到。为了定量评估年变化，我们引入了覆盖整个震级范围的地震震级频率分布统计模型。然后使用贝叶斯分析来估计量化检测能力的模型参数的年度变化。在估算中，我们考虑了台站气温的年变化，成功地阐明了气温变化对远震探测能力的显着影响。
In this study, we evaluate the annual variation in teleseismic detection capability at Syowa Station (69.0°S, 39.6°E) located in East Antarctica, a variation that has been noted in previous studies. For the quantitative evaluation of the annual variation, we introduced a statistical model of a magnitude–frequency distribution of earthquakes covering the entire magnitude range. The annual variation in the model parameter that quantifies the detection capability was then estimated by using Bayesian analysis. In the estimation, we incorporated the annual variation in air temperature at the station and succeeded in clarifying the significant effect that the variation in temperature has on the teleseismic detection capability.