| 日本仪器烈度计算3种方法对比 |
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| 作者姓名： | 关曙渊 单振东 马荣 |
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| 作者单位： | 1.中国地震局工程力学研究所，哈尔滨1500802.中国地震局地震工程与工程振动重点实验室，哈尔滨150080 |
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| 基金项目： | 国家重点研发计划（2018YFC1504004）资助。 |
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| 摘 要： | 地震发生时的仪器烈度计算和震后的烈度速报对于地震预警系统以及震后救援具有重要的意义。仪器烈度计算速度的改善和计算结果的准确度对于整个预警过程都十分重要。日本仪器烈度计算方法的发展主要经过了3个阶段:1996年气象厅仪器烈度计算方法，2008年实时仪器烈度计算方法以及2013年实时仪器烈度计算方法。本文详细阐述了这3种烈度计算方法，并且采用2011年3月11日东日本9.0级地震的数据，对比分析了3种方法所得到的仪器烈度，发现2013年方法比1996年气象厅仪器烈度在计算速度上具有一定的优势；相比较于2008年的实时仪器烈度，2013年方法计算得到的实时仪器烈度更接近于1996年气象厅仪器烈度。
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| 关 键 词： | 仪器烈度 地震预警 日本气象厅 3·11地震 |
| 收稿时间： | 2020-04-08 |
Comparison of instrument intensities using three different methods of Japan |
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| Affiliation: | 1.Institute of Engineering Mechanics，China Earthquake Administration，Harbin 150080，China2.Key Laboratory of Earthquake Engineering and Engineering Vibration of China Earthquake Administration，Harbin 150080，China |
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| Abstract: | More available warning time and a quicker rapid intensity reporting after earthquake are of great significance to the earthquake early warning system and the after earthquake rescue. The improvement of the calculation speed of the instrument intensity and the accuracy of the calculation results are very important for the whole early warning process. The development of intensity in Japan has gone through three stages: instrument intensity of JMA in 1996, real-time instrument intensity in 2008 and real-time instrument intensity in 2013. This paper explains these three and gets the contract picture by using the data in the 2011 off the pacific coast of Tohoku earthquake. The instrument intensity using 2013 method is quicker than that using 1996 method, and the instrument intensity using 2013 method is closer to that using 1996 method, compared with that using 2008 method. |
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