A FIRST ESTIMATION OF RESOLVING POWER OF STRONGMOTION ARRAY TO INFER HISTORY OF SLIP ON UNIDENTIFIED EARTHQUAKE FAULT

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  • IIDA Masahiro
    JSCE Earthquake Research Institute, University of Tokyo Present address: United States Geological Survey

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  • 未知断層の破壊過程に対する強震計アレイの解像力を評価する試み
  • 未知断層の破壊過程に対する強震計アレイの解像力を評価する試み〔英文〕
  • ミチ ダンソウ ノ ハカイ カテイ ニ タイスル キョウシンケイ アレイ ノ

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Abstract

Resolving power of a strong-motion array for inferring the history of slip on an unidentified earthquake fault is defined as the accuracy of a source inversion.<br>The accuracy of the source inversion is efficiently calculated using a scheme constructed on the basis of Wolberg's prediction analysis. The resolving power of arrays for identified faults is also estimated to gain an appreciation for unidentified events. We find that the resolving power of the array is gradually enhanced as the station density increases on a square-grid array surrounding an inland fault. Effects of ocean bottom stations deployed for an offshore fault are recognized.

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