海底における地層変形モニタリングシステムの開発 Development of Seafloor Displacement Monitoring System

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 Seafloor displacements need to be measured continuously to monitor seafloor stability during methane hydrate production. Ground displacement at an onshore landslide site is usually monitored using instruments such as slide sensors. These instruments measure relative displacements between a fixed point and measuring points in the landslide mass. However, they cannot be used for monitoring displacement at the seafloor where it is difficult to establish a fixed reference point.<br> In this study, we propose a new method for monitoring seafloor displacement using a 3-component servo-accelerometer system. The basic concept of the proposed method is to calculate displacements from double integrals of acceleration waveform records. Theoretically, a velocity waveform is obtained from a single integral of an acceleration waveform, and displacement is obtained from double integrals of an acceleration waveform. One of the most important points in data processing is to reduce noise, especially long-period trends, which produce many errors in integral calculations.

収録刊行物

  • 地學雜誌

    地學雜誌 118(5), 883-898, 2009-10-25

    公益社団法人 東京地学協会

参考文献:  23件中 1-23件 を表示

被引用文献:  2件中 1-2件 を表示

各種コード

  • NII論文ID(NAID)
    10030366551
  • NII書誌ID(NCID)
    AN00322536
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    0022135X
  • NDL 記事登録ID
    10503725
  • NDL 雑誌分類
    ZM41(科学技術--地球科学)
  • NDL 請求記号
    Z15-169
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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