ＥＲＳ‐１／ＳＡＲ強度画像を用いた兵庫県南部地震による建造物被害地域の抽出

• 米澤 千夏

  (財) リモート・センシング技術センター

• 竹内 章司

  (財) リモート・センシング技術センター

書誌事項

タイトル別名

• Detection of Damaged Built-up Areas by the 1995 Hyogoken-nanbu Earthquake Using ERS-1/SAR Intensity Images.
• ERS-1 SAR キョウド ガゾウ オ モチイタ ヒョウゴケン ナンブ ジシ

抄録

Large part of urban area of Kobe, Ashiya and Nishinomiya city were damaged by the 1995 Hyogoken-nanbu earthquake. The authors attempted to detect their damages by ERS-1/SAR intensity images. The intensity images obtained before the earthquake indicated urban structure clearly, however, the structural pattern was unclear in the images after the earthquake. Norm type correlation coefficients of data pair between before and after the earthquake indicated decorrelation at damaged urban area. The decorrelation by the earthquake was detected obviously in comparison with the correlation of the data pairs which interval did not include the earthquake occurrence. The areas where the backscatter correlation changed significantly before and after the earthquake correspond to damaged built-up areas observed by aerial photographs. The ground surface change by the earthquake, such as collapse or burnt down of buildings, should cause the change of backscatter characteristics and further study is necessary to investigate its mechanism. Collapsed built-up area has not been recognized by optical sensor images like SPOT/HRV. The result of this study suggests the usefulness of SAR intensity images for urban disaster observation.

収録刊行物

• 写真測量とリモートセンシング

  写真測量とリモートセンシング 37 (4), 57-61, 1998

  一般社団法人 日本写真測量学会

詳細情報

• CRID: 1390282679053981568
• NII論文ID: 10002050873
• NII論文ID: 10004563740
• NII書誌ID: AN00111450
• DOI: 10.4287/jsprs.37.4_57
• ISSN: 18839061
• ISSN: 02855844
• NDL書誌ID: 4564032
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4564032
• 本文言語コード: ja
• データソース種別:
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• 抄録ライセンスフラグ: 使用不可