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自己回帰過程による地震波初動の自動検測とその信頼区間
https://nied-repo.bosai.go.jp/records/5845
https://nied-repo.bosai.go.jp/records/58458a4d368f-842b-4594-9207-6f24e35f1114
| Item type | researchmap(1) | |||||||||||||
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| 公開日 | 2023-03-30 | |||||||||||||
| タイトル | ||||||||||||||
| 言語 | ja | |||||||||||||
| タイトル | 自己回帰過程による地震波初動の自動検測とその信頼区間 | |||||||||||||
| タイトル | ||||||||||||||
| 言語 | en | |||||||||||||
| タイトル | 自己回帰過程による地震波初動の自動検測とその信頼区間 | |||||||||||||
| 著者 |
森田 裕一
× 森田 裕一
× 浜口 博之
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| 抄録 | ||||||||||||||
| 内容記述タイプ | Other | |||||||||||||
| 内容記述 | Although several techniques have been proposed for a computer-based automatic detection of P and S onset times of small earthquakes, some seismologists have been felt hesitation in using such onset time data on a routine basis. This is mainly due to a lack of parameters judging precision of detected onset times. This paper aimed to introduce a new mathematical aspect for the confidence interval of onset time estimate and to apply the practical tests.<br>After the autoregressive model parameters have been estimated at two windows immediately preceding and behind P or S onset of an earthquake, the likelihood functions for the two models are defined by assuming normality of probability density function of residual time series. The log-likelihood function of the joint model, which is introduced by using of the above mentioned likelihood functions, gave a basis for onset time picking and statistical inference of a confidence interval time. P and S onset times and their 90% confidence interval were automatically estimated for more than one hundred seismograms of microearthquakes. The result made good comparisons with the manual pickings by several persons. When the signal-to-noise ratio is about 10dB, the 90% confidence interval times are estimated to be 0.2 and 0.8seconds for P and S onsets, respectively. | |||||||||||||
| 言語 | en | |||||||||||||
| 書誌情報 |
ja : 地震 第２輯 en : 地震 2 巻 37, 号 2, p. 281-293, 発行日 1984 |
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| 出版者 | ||||||||||||||
| 言語 | ja | |||||||||||||
| 出版者 | 公益社団法人 日本地震学会 | |||||||||||||
| 出版者 | ||||||||||||||
| 言語 | en | |||||||||||||
| 出版者 | SEISMOLOGICAL SOCIETY OF JAPAN | |||||||||||||
| ISSN | ||||||||||||||
| 収録物識別子タイプ | EISSN | |||||||||||||
| 収録物識別子 | 1883-9029 | |||||||||||||
| DOI | ||||||||||||||
| 関連識別子 | 10.4294/zisin1948.37.2_281 | |||||||||||||
