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- 阿部 邦昭
- 日本歯科大学新潟短期大学
書誌事項
- タイトル別名
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- Observations of Dominant Periods at Bays in Kii Peninsula and the Tsunami Response
- キイハントウ エンガン ニ オケル ワン ノ タクエツ シュウキ ノ ソクテイ ト ツナミ ニ タイスル オウトウ
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We observed seiches at 28 bays in Kii Peninsula, Japan, by the use of a pressure gauge and determined the dominant periods from the spectra. The spectra were extracted from time series of 1 minute sampling for 6 hours using Hanning window. Comparing the dominant periods with the maximum wave heights observed at the heads in the 1944 Tonankai tsunami and the 1960 Chilean tsunami, we obtained tsunami height dependence on the dominant period. Moreover, a tsunami height ratio, defined as a ratio of the maximum tsunami height at the head to that at the open coast, was plotted as a function of the dominant period. They showed the maximums at 12-25 and 31-60 minutes for the 1944 Tonankai tsunami and the 1960 Chilean tsunami, respectively. It was attributed to resonance of bays. At the resonance periods the height ratios are 2 for 1944 and 4 for 1960 tsunamis, respectively. The dominant periods, thus obtained, are useful as basic data for predicting tsunami amplifications of bays.
収録刊行物
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- 地震 第2輯
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地震 第2輯 58 (2), 83-89, 2005
公益社団法人 日本地震学会
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詳細情報 詳細情報について
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- CRID
- 1390282679282210688
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- NII論文ID
- 130006787484
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- NII書誌ID
- AN00305741
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- ISSN
- 18839029
- 2186599X
- 00371114
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- NDL書誌ID
- 7697566
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- データソース種別
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- JaLC
- NDL
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