A web-based trigger factor inverse analysis system for slope failure hazard mapping

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  • 斜面崩壊誘因広域逆推定システムの構築
  • シャメン ホウカイ ユウイン コウイキ ギャクスイテイ システム ノ コウチク

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Abstract

Pointing out limitations of observing slope failure trigger factors (i. e., rainfall, earthquake, weathering, etc.), we have tackled the development of a web-based Trigger Factor Inverse analysis system for slope failure hazard mapping (TFI-web). Through the measurement equation defined between “unobserved trigger factor” and “observed causal factors (i. e., satellite remotely sensed data, geographical information) ” and the trigger factor can be estimated inversely by the TFI-web, which consists of the following systems: i) Pre-processing system, ii) Analysis system, iii) Post-processing system, and iv) Information providing and management system. The functions for making the causal factors (i. e., input data sets) belong to the pre-processing system. Based on the Structural Equation Modeling (SEM), the inverse analysis of trigger factor can be carried out with the analysis system. The post-processing system supports the editorial works for the trigger factor influence maps, as well as the statistical measurements in analysis. Furthermore, the information providing and management system assumes a role to provide and manage those data sets. The system designs on the TFI-web would become a significant guide for constructing the related system including models on spatial data integration and analysis under the internet-environment.

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