書誌事項
- タイトル別名
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- Improvement and real time calculation of Rokko formula, a discriminant function for risk assessment of slope failures by earthquake
- ジシン ニ ヨル シャメン ホウカイ キケンド ヒョウカ ハンベツシキ 「 ロッコウシキ 」 ノ カイリョウ ト ジツジカン ウンヨウ
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抄録
Rokko formula is a discriminant function for risk assessment of slope failures by earthquake. There are three problems to apply the formula for real time anticipation : too narrow target range of PGA (peak ground acceleration), lack of PGA data, and too long calculation time. We developed modified Rokko formula, estimation method of PGA from JMA (Japan Meteorological Agency) seismic intensity scale, and calculation method using precomputed histogram of real-time-independent part. We applied the methods to past earthquakes using shake maps (estimated seismic intensity distribution data) by JMA, and compared the results with slope failure positions by air photo interpretation. The results were appropriate in the interpretation area except narrow steep-slope-strips, but the system sometimes anticipated higher risk at the outside of the interpretation area. The difference was mainly caused by lack of seismometer near the epicenter.
収録刊行物
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- 写真測量とリモートセンシング
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写真測量とリモートセンシング 51 (6), 381-386, 2013
一般社団法人 日本写真測量学会
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詳細情報 詳細情報について
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- CRID
- 1390001204078438400
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- NII論文ID
- 10031145336
- 20001393511
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- NII書誌ID
- AN00111450
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- ISSN
- 18839061
- 02855844
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- NDL書誌ID
- 024240997
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可