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Influence of statistical time range on estimating seismicity parameters 被引量:1

Influence of statistical time range on estimating seismicity parameters
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摘要 The influence of non-uniqueness in selecting statistical time ranges on seismicity parameters of b value and annual mean occurrence rate ν4 is widely analyzed and studied. The studied result states that the influence of statistical time range on the b value is generally smaller than on the annual mean rate. Owing to the exponentially functional relation between the annual mean rate and b value, the variation of b value by varying statistical time range brings about decrease or increase in the annual mean rates of each magnitude interval with power progression law. These results will exert a synthetic effect on seismic safety evaluation results in various regions in our country. The influence of non-uniqueness in selecting statistical time ranges on seismicity parameters of b value and annual mean occurrence rate ν4 is widely analyzed and studied. The studied result states that the influence of statistical time range on the b value is generally smaller than on the annual mean rate. Owing to the exponentially functional relation between the annual mean rate and b value, the variation of b value by varying statistical time range brings about decrease or increase in the annual mean rates of each magnitude interval with power progression law. These results will exert a synthetic effect on seismic safety evaluation results in various regions in our country.
作者 黄玮琼 吴宣
出处 《Acta Seismologica Sinica(English Edition)》 EI CSCD 2001年第6期626-633,共8页
基金 Chinese Joint Seismological Science Foundation (100110).
关键词 statistical time range b value annual mean occurrence rate uncertainty statistical time range b value annual mean occurrence rate uncertainty
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