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        <datestamp>2025-11-26T00:55:20Z</datestamp>
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          <dc:title xml:lang="ja">光ファイバDASと微動探査を組み合わせた地盤モニタリング手法開発</dc:title>
          <dc:title xml:lang="en">Development of Ground Monitoring Method Using Optical Fiber DAS</dc:title>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">藤原, 広行</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">フジワラ, ヒロユキ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">FUJIWARA, Hiroyuki</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">藤原</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">フジワラ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">FUJIWARA</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">広行</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">ヒロユキ</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Hiroyuki</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">中村, 洋光</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">ナカムラ, ヒロミツ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">NAKAMURA, Hiromitsu</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">中村</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">ナカムラ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">NAKAMURA</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">洋光</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">ヒロミツ</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Hiromitsu</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">内藤, 昌平</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">ナイトウ, ショウヘイ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">NAITO, Shohei</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">内藤</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">ナイトウ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">NAITO</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">昌平</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">ショウヘイ</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Shohei</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">㓛刀, 卓</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">クヌギ, タカシ</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">㓛刀</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">クヌギ</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">卓</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">タカシ</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">先名, 重樹</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">センナ, シゲキ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">SENNA, Shigeki</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">先名</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">センナ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">SENNA</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">重樹</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">シゲキ</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Shigeki</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">佐藤, 昌人</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">サトウ, マサト</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">SATO, Masato</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">佐藤</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">サトウ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">SATO</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">昌人</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">マサト</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Masato</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">鈴木, 晴彦</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">スズキ, ハルヒコ</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">鈴木</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">スズキ</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">晴彦</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">ハルヒコ</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">小川, 直人</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">オガワ, ナオト</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">OGAWA, Naoto</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">小川</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">オガワ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">OGAWA</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">直人</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">ナオト</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Naoto</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">小西, 千里</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">コニシ, チサト</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">KONISHI, Chisato</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">小西</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">コニシ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">KONISHI</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">千里</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">チサト</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Chisato</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">櫻井, 健</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">サクライ, ケン</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">SAKURAI, Ken</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">櫻井</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">サクライ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">SAKURAI</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">健</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">ケン</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Ken</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">武部, 真樹</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">タケベ, マサキ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">TAKABE, Masaki</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">武部</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">タケベ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">TAKABE</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">真樹</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">マサキ</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Masaki</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">古川, 愛生</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">フルカワ, マキ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">FURUKAWA, Maki</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">古川</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">フルカワ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">FURUKAWA</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">愛生</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">マキ</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Maki</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="ja">當麻, 正貴</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">トウマ, マサタカ</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="en">TOMA, Masataka</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="ja">當麻</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">トウマ</jpcoar:familyName>
            <jpcoar:familyName xml:lang="en">TOMA</jpcoar:familyName>
            <jpcoar:givenName xml:lang="ja">正貴</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">マサタカ</jpcoar:givenName>
            <jpcoar:givenName xml:lang="en">Masataka</jpcoar:givenName>
          </jpcoar:creator>
          <jpcoar:subject xml:lang="ja" subjectScheme="Other">DAS, 光ファイバセンシング, 微動探査, 地震観測, 地震波干渉法</jpcoar:subject>
          <jpcoar:subject xml:lang="en" subjectScheme="Other">Distributed Acoustic Sensing, Fiber Optic Sensing, Microtremor Measurement, Seismic Observation, Seismic Interferometry</jpcoar:subject>
          <datacite:description xml:lang="ja" descriptionType="Abstract">既設の光ファイバケーブルを用いたDASにより，従来よりも高密度・高精度に地盤の振動特性を把握し，10 m以下の高密度な間隔で地盤の揺れを計測可能であることを確認した．また，高密度の振動計測を長期間モニタリングすることにより取得される膨大な計測データを効率的に処理するための技術を開発した．さらに，DASの高密度データと微動探査データを組み合わせて地震波干渉法による解析を行い，解像度50 m以下の広域地盤モデルを作成可能な手法を開発した．</datacite:description>
          <datacite:description xml:lang="en" descriptionType="Abstract">By using DAS with existing optical fiber cables, we confirmed that ground vibration characteristics can be captured with higher density and accuracy than conventional methods, enabling measurement of ground shaking at intervals of 10 m or less. We also developed technology to efficiently process the large amount of measurement data acquired through long-term monitoring of high-density vibration measurements. Furthermore, by combining the high-density DAS data with microtremor survey and performing analysis using seismic wave interference methods, we developed a technique capable of creating large-scale ground models with a resolution of 50 m or less.</datacite:description>
          <dc:publisher xml:lang="ja">防災科学技術研究所</dc:publisher>
          <dc:publisher xml:lang="en">National Research Institute for Earth Science and Disaster Resilience</dc:publisher>
          <datacite:date dateType="Issued">2025-11-21</datacite:date>
          <dc:language>jpn</dc:language>
          <dc:type rdf:resource="http://purl.org/coar/resource_type/c_6501">departmental bulletin paper</dc:type>
          <jpcoar:identifier identifierType="DOI">https://doi.org/10.24732/NIED.00007353</jpcoar:identifier>
          <jpcoar:identifier identifierType="URI">https://nied-repo.bosai.go.jp/records/7353</jpcoar:identifier>
          <jpcoar:identifierRegistration identifierType="JaLC">10.24732/NIED.00007353</jpcoar:identifierRegistration>
          <jpcoar:sourceIdentifier identifierType="EISSN">1347-748X</jpcoar:sourceIdentifier>
          <jpcoar:sourceTitle xml:lang="ja">防災科学技術研究所研究資料</jpcoar:sourceTitle>
          <jpcoar:sourceTitle xml:lang="en">Technical Note of the National Research Institute for Earth Science and Disaster Resilience</jpcoar:sourceTitle>
          <jpcoar:issue>524</jpcoar:issue>
          <jpcoar:pageStart>1</jpcoar:pageStart>
          <jpcoar:pageEnd>70</jpcoar:pageEnd>
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            <jpcoar:extent>37.7 MB</jpcoar:extent>
            <datacite:date dateType="Available">2025-11-21</datacite:date>
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