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        <identifier>oai:fra.repo.nii.ac.jp:02007363</identifier>
        <datestamp>2026-02-09T06:11:34Z</datestamp>
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        <jpcoar:jpcoar xmlns:datacite="https://schema.datacite.org/meta/kernel-4/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcndl="http://ndl.go.jp/dcndl/terms/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:jpcoar="https://github.com/JPCOAR/schema/blob/master/2.0/" xmlns:oaire="http://namespace.openaire.eu/schema/oaire/" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rioxxterms="http://www.rioxx.net/schema/v2.0/rioxxterms/" xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns="https://github.com/JPCOAR/schema/blob/master/2.0/" xsi:schemaLocation="https://github.com/JPCOAR/schema/blob/master/2.0/jpcoar_scm.xsd">
          <dc:title xml:lang="ja">日本海南西海域における“底部冷水”の底魚類への影響</dc:title>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="en">Moriwaki, Shimpei</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja">森脇, 晋平</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">モリワキ, シンペイ</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="en">Moriwaki</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja">森脇</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">モリワキ</jpcoar:familyName>
            <jpcoar:givenName xml:lang="en">Shimpei</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja">晋平</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">シンペイ</jpcoar:givenName>
            <jpcoar:affiliation>
              <jpcoar:affiliationName xml:lang="ja">島根県水産試験場</jpcoar:affiliationName>
            </jpcoar:affiliation>
          </jpcoar:creator>
          <jpcoar:creator>
            <jpcoar:creatorName xml:lang="en">Ogawa, Yoshihiko</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja">小川, 嘉彦</jpcoar:creatorName>
            <jpcoar:creatorName xml:lang="ja-Kana">オガワ, ヨシヒコ</jpcoar:creatorName>
            <jpcoar:familyName xml:lang="en">Ogawa</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja">小川</jpcoar:familyName>
            <jpcoar:familyName xml:lang="ja-Kana">オガワ</jpcoar:familyName>
            <jpcoar:givenName xml:lang="en">Yoshihiko</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja">嘉彦</jpcoar:givenName>
            <jpcoar:givenName xml:lang="ja-Kana">ヨシヒコ</jpcoar:givenName>
          </jpcoar:creator>
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          <datacite:description xml:lang="en" descriptionType="Abstract">This paper studies fluctuations in hydrographic features near the sea bottom on the continental shelf of the southwestern Japan Sea and its influence on demersal fish resources. The data used are derived from monthly hydrographic observations and monthly catch statistics of trawl fisheries operated in this region since 1972. On the shelf, a conspicuous thermal front occurs with the main thermocline crossing the sea-bottom throughout whole seasons. Location of the thermal front varies with the season and the year, causing considerable variations in the environment of the near-bottom layers. Distributions of demersal fishes change in conformity with fluctuations in the "Bottom Cold Water"; The distribution area of cold-water species such as pollock (Theragra chalcogramma) and plaice(Cleisthenes pinetorum herzensteini) expands their distribution while that of warm-water species such as blackthroat seaperch (Doedeleinia becyoides) shrinks when the "Bottom Cold Water" grows, and vice versa. Clear correlations were found between near-bottom temperature and landings of these fishes.</datacite:description>
          <datacite:description xml:lang="ja" descriptionType="Abstract">日本海南西海域で得られた月例定線海洋観測資料を整理し,陸棚底層部の海況変動とそれが陸棚水域で操業する沖合機船底曳網漁業の漁況に与える影響を調べた. 日本海南西部の陸棚上底層部には,主温度躍層が海底と接することによって南北方向に海況特性の水平勾配が大きい前線帯が四季を通じて東西に存在する.この前線帯の位置の変動は季節的にも経年的にも大きいが,温度前線の位置の変動は,“底部冷水”の変動としてとらえられる.陸棚における重要底魚類の分布パターンは,この“底部冷水”の変動と密接に関連している.本報では冷水性種のスケトウダラとソウハチ及び暖水性種のアカムツとマアジを具体例として,“底部冷水””がこれら対象種の分布パターンへの影響を通じて,沖合機船底曳網漁業の漁況に大きな影響を与えていることを明らかにした.</datacite:description>
          <dc:publisher xml:lang="ja">東北区水産研究所</dc:publisher>
          <dc:publisher xml:lang="en">Tohoku Regional Fisheries Research Laboratory</dc:publisher>
          <datacite:date dateType="Issued">1989-03-20</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="URI">https://fra.repo.nii.ac.jp/records/2007363</jpcoar:identifier>
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            <jpcoar:relatedIdentifier identifierType="Local">tnf_k_51_167</jpcoar:relatedIdentifier>
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          <jpcoar:relation>
            <jpcoar:relatedIdentifier identifierType="URI">https://agriknowledge.affrc.go.jp/RN/2010430708</jpcoar:relatedIdentifier>
            <jpcoar:relatedTitle xml:lang="ja">日本農学文献記事索引(agriknowledge)</jpcoar:relatedTitle>
          </jpcoar:relation>
          <jpcoar:sourceIdentifier identifierType="NCID">AN00167637</jpcoar:sourceIdentifier>
          <jpcoar:sourceIdentifier identifierType="PISSN">0049-402X</jpcoar:sourceIdentifier>
          <jpcoar:sourceTitle xml:lang="ja">東北区水産研究所研究報告</jpcoar:sourceTitle>
          <jpcoar:sourceTitle xml:lang="en">Bulletin of Tohoku Regional Fisheries Research Laboratory</jpcoar:sourceTitle>
          <jpcoar:volume>51</jpcoar:volume>
          <jpcoar:numPages>15</jpcoar:numPages>
          <jpcoar:pageStart>167</jpcoar:pageStart>
          <jpcoar:pageEnd>181</jpcoar:pageEnd>
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