Bathymetric, Subsurface, and Gravity Survey off the Sada-misaki Peninsula, the Seto Inland Sea
We conducted a bathymetric, subsurface, and gravity survey off the Sada-misaki Peninsula aboard the R/V Shinsei-maru KS-16-E01 cruise. The objective of the survey is detailed mapping and collection of basic geological information about the western end of Median Tectonic Line (MTL) active fault zone...
Saved in:
| Published in | JAMSTEC REPORT OF RESEARCH AND DEVELOPMENT Vol. 27; pp. 13 - 25 |
|---|---|
| Main Authors | , , |
| Format | Journal Article |
| Language | English Japanese |
| Published |
Yokohama
Japan Agency for Marine-Earth Science and Technology
01.09.2018
Japan Science and Technology Agency |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1880-1153 2186-358X |
| DOI | 10.5918/jamstecr.27.13 |
Cover
| Abstract | We conducted a bathymetric, subsurface, and gravity survey off the Sada-misaki Peninsula aboard the R/V Shinsei-maru KS-16-E01 cruise. The objective of the survey is detailed mapping and collection of basic geological information about the western end of Median Tectonic Line (MTL) active fault zone which is inferred to be located in the Seto Inland Sea. In the eastern side of the survey area, the bathymetry is characterized by sand wave structures. These structures are thought to be formed by strong tidal currents. In the western side of the survey area, the seafloor is rather smooth without the sand wave growth. Uneven topography and depressions probably reflect the MTL active fault zone. The bathymetry is considered to be formed by lateral fault movements. In the western side of the survey area, acoustic wave reflections of the sub-bottom profiling interpreted as a boundary between Quaternary and Pleistocene sedimentary layers were identified. The sedimentary layers were vertically displaced probably caused by faults. The MTL is associated with a steep gradient zone of gravity anomaly. There is positive anomaly along the shoreline in the southeastern side, and the gravity anomaly decreases across the tectonic line to negative gravity anomaly in the northwestern side. The gravity anomaly is suggested to reflect a deeper basement structure beneath the subsurface sedimentary layer. The basement structure inferred from the gravity anomaly profile is consistent with the half-graben crustal structure formed by the listric curving fault. |
|---|---|
| AbstractList | We conducted a bathymetric, subsurface, and gravity survey off the Sada-misaki Peninsula aboard the R/V Shinsei-maru KS-16-E01 cruise. The objective of the survey is detailed mapping and collection of basic geological information about the western end of Median Tectonic Line (MTL) active fault zone which is inferred to be located in the Seto Inland Sea. In the eastern side of the survey area, the bathymetry is characterized by sand wave structures. These structures are thought to be formed by strong tidal currents. In the western side of the survey area, the seafloor is rather smooth without the sand wave growth. Uneven topography and depressions probably reflect the MTL active fault zone. The bathymetry is considered to be formed by lateral fault movements. In the western side of the survey area, acoustic wave reflections of the sub-bottom profiling interpreted as a boundary between Quaternary and Pleistocene sedimentary layers were identified. The sedimentary layers were vertically displaced probably caused by faults. The MTL is associated with a steep gradient zone of gravity anomaly. There is positive anomaly along the shoreline in the southeastern side, and the gravity anomaly decreases across the tectonic line to negative gravity anomaly in the northwestern side. The gravity anomaly is suggested to reflect a deeper basement structure beneath the subsurface sedimentary layer. The basement structure inferred from the gravity anomaly profile is consistent with the half-graben crustal structure formed by the listric curving fault. |
| Author | Kasaya, Takafumi Kanamatsu, Toshiya Fujiwara, Toshiya |
| Author_xml | – sequence: 1 fullname: Kanamatsu, Toshiya organization: Research and Development Center for Earthquake and Tsunami (CEAT), Japan Agency for Marine-Earth Science and Technology (JAMSTEC) – sequence: 1 fullname: Fujiwara, Toshiya organization: Research and Development Center for Earthquake and Tsunami (CEAT), Japan Agency for Marine-Earth Science and Technology (JAMSTEC) – sequence: 1 fullname: Kasaya, Takafumi organization: Research and Development Center for Earthquake and Tsunami (CEAT), Japan Agency for Marine-Earth Science and Technology (JAMSTEC) |
| BookMark | eNpVkEFLAzEQRoMoWKtXzwteuzWTbHazxypaCwWFKngyTNOJ3druapIt9N_bsip4GpjvvRn4zthx3dTE2CXwoSpBX69wEyJZPxTFEOQR6wnQeSqVfj1mPdCapwBKnrKLEFaccykEz0rVY283GJe7DUVf2UEya-eh9Q4tDRKsF8nY47aKu_3eb2mXNM4lcUnJDBeYbqqAH1XyRHVVh3aNgy6i2CSTen2wZ4Tn7MThOtDFz-yzl_u759uHdPo4ntyOpqmFXMnUcZAABXecrJpjKXObZ9oWZamxQJVnXBVqbhdOCevyBZWaQwloy0wDFwJln111dz9989VSiGbVtL7evzRCSKFAiizfU8OOsr4JwZMzn77aoN8Z4OZQo_mt0YjCgNwLo05YhYjv9Iejj5Vd0z-cd85fZpfoDdXyG1JkgCw |
| Cites_doi | 10.1017/CBO9780511549816 10.1111/j.1365-246X.1973.tb06513.x 10.1029/JZ064i001p00049 10.1007/BF00310065 |
| ContentType | Journal Article |
| Copyright | Japan Agency for Marine-Earth Science and Technology Copyright Japan Science and Technology Agency 2018 |
| Copyright_xml | – notice: Japan Agency for Marine-Earth Science and Technology – notice: Copyright Japan Science and Technology Agency 2018 |
| DBID | AAYXX CITATION |
| DOI | 10.5918/jamstecr.27.13 |
| DatabaseName | CrossRef |
| DatabaseTitle | CrossRef |
| DatabaseTitleList | |
| DeliveryMethod | fulltext_linktorsrc |
| EISSN | 2186-358X |
| EndPage | 25 |
| ExternalDocumentID | 10_5918_jamstecr_27_13 article_jamstecr_27_0_27_13_article_char_en |
| GroupedDBID | ALMA_UNASSIGNED_HOLDINGS JSF JSH KQ8 OK1 RJT RZJ AAYXX CITATION |
| ID | FETCH-LOGICAL-c1653-f0131170f0ec5ba936c648c7998a7a5640575bcdf52cf6de980191ac9481022a3 |
| ISSN | 1880-1153 |
| IngestDate | Mon Jun 30 07:13:27 EDT 2025 Tue Jul 01 01:35:51 EDT 2025 Wed Sep 03 06:30:28 EDT 2025 |
| IsDoiOpenAccess | true |
| IsOpenAccess | true |
| IsPeerReviewed | false |
| IsScholarly | false |
| Language | English Japanese |
| LinkModel | OpenURL |
| MergedId | FETCHMERGED-LOGICAL-c1653-f0131170f0ec5ba936c648c7998a7a5640575bcdf52cf6de980191ac9481022a3 |
| Notes | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 |
| OpenAccessLink | https://www.jstage.jst.go.jp/article/jamstecr/27/0/27_13/_article/-char/en |
| PQID | 2232513246 |
| PQPubID | 2029001 |
| PageCount | 13 |
| ParticipantIDs | proquest_journals_2232513246 crossref_primary_10_5918_jamstecr_27_13 jstage_primary_article_jamstecr_27_0_27_13_article_char_en |
| ProviderPackageCode | CITATION AAYXX |
| PublicationCentury | 2000 |
| PublicationDate | 2018/09/01 |
| PublicationDateYYYYMMDD | 2018-09-01 |
| PublicationDate_xml | – month: 09 year: 2018 text: 2018/09/01 day: 01 |
| PublicationDecade | 2010 |
| PublicationPlace | Yokohama |
| PublicationPlace_xml | – name: Yokohama |
| PublicationTitle | JAMSTEC REPORT OF RESEARCH AND DEVELOPMENT |
| PublicationTitleAlternate | JAMSTEC Rep. Res. Dev. |
| PublicationYear | 2018 |
| Publisher | Japan Agency for Marine-Earth Science and Technology Japan Science and Technology Agency |
| Publisher_xml | – name: Japan Agency for Marine-Earth Science and Technology – name: Japan Science and Technology Agency |
| References | 小泉金一郎，藤本博巳，井口博夫，内津将，河野芳輝 (1994), 瀬戸内海における海上重力測定，測地学会誌, 40(4), 333-345. 西坂直樹，大野裕記，浅野彰洋，瀬川爾朗 (2006), 四国北西部伊予灘周辺地域におけるヘリコプター搭載型重力測定，電力土木, 321, 122-126. Kuo, B.Y. and D.W. Forsyth (1988), Gravity anomalies of the ridge-transform system in the South Atlantic between 31° and 34.5°S: Upwelling centers and variations in crustal thickness, Marine Geophysical Research, 10, 205-232. 海上保安庁第六管区海上保安本部 (2010), 松山港沖で巨大なサンドウェーブを確認，<http://www.kaiho.mlit.go.jp/06kanku/news/press/press.pdf/22-04-3.pdf>, (accessed 2018-06-20). Inouchi, Y. (1990), Origin of sand and its distribution pattern in the Seto Inland Sea, Southwest Japan, Bulletin of the Geological Survey of Japan, 41(2), 49-86. 由佐悠紀，竹村恵二，北岡豪一，神山孝吉，堀江正治，中川一郎，小林芳正，久保寺章，須藤靖明，井川猛，浅田正陽 (1992), 反射法地震探査と重力測定による別府湾の地下構造，地震 2, 45, 199-212. Amante, C. and B.W. Eakins (2009), ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis, National Geophysical Data Center, NOAA Technical Memorandum NESDIS NGDC-24, 19pp, March 2009, <http://www.ngdc.noaa.gov/mgg/global/global.html>, (accessed 2018-06-20). 大野一郎，河野芳輝，藤本博巳，小泉金一郎 (1994), 瀬戸内海西部の重力異常と負異常帯の地下構造，地震 2, 47, 395-401. 大塚一広，七山太，三浦健一郎，池田倫治，金山清一，小林修二，徳間伸介，安間恵，横山芳春，安原盛明，杉山雄一，佃栄吉 (2002), 中央構造線活断層系伊予セグメント西端部，下灘沖南断層の完新世活動履歴，活断層・古地震研究報告, 2, 125-140. Talwani, M., J.L. Worzel, and M. Landisman (1959), Rapid gravity computations for two-dimensional bodies with application to the Mendocino submarine fracture zone, Journal of Geophysical Research, 64, 49-59. 大野裕記，西坂直樹，池田倫治，小林修二，長谷川正，村岡淳，長谷川修一，松島学，瀬川爾朗 (2005), 伊予灘中央構造線活断層系における各種物理探査（速報），日本地震学会2005年度秋季大会，札幌，P230. Blakely, R.J. (1996), Potential Theory in Gravity & Magnetic Applications, Cambridge University Press, 441pp. 金松敏也，笠谷貴史，富士原敏也，小平秀一 (2017), 佐田岬沖の詳細海底地形：KS-16-E01新青丸緊急調査の報告，ブルーアースシンポジウム，BE17-P07. Parker, R.L. (1972), The rapid calculation of potential anomalies, Geophysical Journal of the Royal Astronomical Society, 31, 447-455. 地質調査所編 (2000), 日本重力CD-ROM, 数値地形図P-2. 名和一成，駒澤正夫，村田泰章，佐藤秀幸，広島俊男，牧野雅彦，岸本清行，村上文敏，上嶋正人，西村清和，大熊茂雄，大野一郎，村上英記，志知龍一，小室裕明，山本明彦 (2008), 松山地域重力図（ブーゲー異常）1:200,000. 大塚一広，七山太，三浦健一郎，池田倫治，金山清一，横山芳春，杉山雄一，佃栄吉(2001), 伊予灘東部海域の中央構造線活断層系の完新世活動性評価(II) –上灘沖海上ボーリングコアの解析結果–, 活断層・古地震研究報告, 1, 215-232. Wessel, P. and W.H.F. Smith (1991), Free software helps map and display data, EOS Transactions AGU 72, 441, 445-446. 七山太，池田倫治，大塚一広，三浦健一郎，金山清一，小林修二，長谷川正，杉山雄一，佃栄吉 (2002), 伊予灘～佐賀関沖MTL活断層系の広域イメージングとセグメント区分，活断層・古地震研究報告, 2, 141-152. 1 2 3 4 5 6 P. Wessel (7) 1991; 72 |
| References_xml | – reference: Kuo, B.Y. and D.W. Forsyth (1988), Gravity anomalies of the ridge-transform system in the South Atlantic between 31° and 34.5°S: Upwelling centers and variations in crustal thickness, Marine Geophysical Research, 10, 205-232. – reference: 名和一成，駒澤正夫，村田泰章，佐藤秀幸，広島俊男，牧野雅彦，岸本清行，村上文敏，上嶋正人，西村清和，大熊茂雄，大野一郎，村上英記，志知龍一，小室裕明，山本明彦 (2008), 松山地域重力図（ブーゲー異常）1:200,000. – reference: 大塚一広，七山太，三浦健一郎，池田倫治，金山清一，横山芳春，杉山雄一，佃栄吉(2001), 伊予灘東部海域の中央構造線活断層系の完新世活動性評価(II) –上灘沖海上ボーリングコアの解析結果–, 活断層・古地震研究報告, 1, 215-232. – reference: 地質調査所編 (2000), 日本重力CD-ROM, 数値地形図P-2. – reference: Parker, R.L. (1972), The rapid calculation of potential anomalies, Geophysical Journal of the Royal Astronomical Society, 31, 447-455. – reference: Blakely, R.J. (1996), Potential Theory in Gravity & Magnetic Applications, Cambridge University Press, 441pp. – reference: 七山太，池田倫治，大塚一広，三浦健一郎，金山清一，小林修二，長谷川正，杉山雄一，佃栄吉 (2002), 伊予灘～佐賀関沖MTL活断層系の広域イメージングとセグメント区分，活断層・古地震研究報告, 2, 141-152. – reference: 由佐悠紀，竹村恵二，北岡豪一，神山孝吉，堀江正治，中川一郎，小林芳正，久保寺章，須藤靖明，井川猛，浅田正陽 (1992), 反射法地震探査と重力測定による別府湾の地下構造，地震 2, 45, 199-212. – reference: 小泉金一郎，藤本博巳，井口博夫，内津将，河野芳輝 (1994), 瀬戸内海における海上重力測定，測地学会誌, 40(4), 333-345. – reference: 金松敏也，笠谷貴史，富士原敏也，小平秀一 (2017), 佐田岬沖の詳細海底地形：KS-16-E01新青丸緊急調査の報告，ブルーアースシンポジウム，BE17-P07. – reference: 海上保安庁第六管区海上保安本部 (2010), 松山港沖で巨大なサンドウェーブを確認，<http://www.kaiho.mlit.go.jp/06kanku/news/press/press.pdf/22-04-3.pdf>, (accessed 2018-06-20). – reference: Inouchi, Y. (1990), Origin of sand and its distribution pattern in the Seto Inland Sea, Southwest Japan, Bulletin of the Geological Survey of Japan, 41(2), 49-86. – reference: 西坂直樹，大野裕記，浅野彰洋，瀬川爾朗 (2006), 四国北西部伊予灘周辺地域におけるヘリコプター搭載型重力測定，電力土木, 321, 122-126. – reference: Talwani, M., J.L. Worzel, and M. Landisman (1959), Rapid gravity computations for two-dimensional bodies with application to the Mendocino submarine fracture zone, Journal of Geophysical Research, 64, 49-59. – reference: 大野裕記，西坂直樹，池田倫治，小林修二，長谷川正，村岡淳，長谷川修一，松島学，瀬川爾朗 (2005), 伊予灘中央構造線活断層系における各種物理探査（速報），日本地震学会2005年度秋季大会，札幌，P230. – reference: Wessel, P. and W.H.F. Smith (1991), Free software helps map and display data, EOS Transactions AGU 72, 441, 445-446. – reference: 大野一郎，河野芳輝，藤本博巳，小泉金一郎 (1994), 瀬戸内海西部の重力異常と負異常帯の地下構造，地震 2, 47, 395-401. – reference: Amante, C. and B.W. Eakins (2009), ETOPO1 1 Arc-Minute Global Relief Model: Procedures, Data Sources and Analysis, National Geophysical Data Center, NOAA Technical Memorandum NESDIS NGDC-24, 19pp, March 2009, <http://www.ngdc.noaa.gov/mgg/global/global.html>, (accessed 2018-06-20). – reference: 大塚一広，七山太，三浦健一郎，池田倫治，金山清一，小林修二，徳間伸介，安間恵，横山芳春，安原盛明，杉山雄一，佃栄吉 (2002), 中央構造線活断層系伊予セグメント西端部，下灘沖南断層の完新世活動履歴，活断層・古地震研究報告, 2, 125-140. – ident: 2 doi: 10.1017/CBO9780511549816 – ident: 3 – ident: 5 doi: 10.1111/j.1365-246X.1973.tb06513.x – ident: 6 doi: 10.1029/JZ064i001p00049 – ident: 1 – volume: 72 start-page: 445 issn: 0096-3941 issue: 441 year: 1991 ident: 7 publication-title: Eos – ident: 4 doi: 10.1007/BF00310065 |
| SSID | ssj0003220495 |
| Score | 1.6668334 |
| Snippet | We conducted a bathymetric, subsurface, and gravity survey off the Sada-misaki Peninsula aboard the R/V Shinsei-maru KS-16-E01 cruise. The objective of the... |
| SourceID | proquest crossref jstage |
| SourceType | Aggregation Database Index Database Publisher |
| StartPage | 13 |
| SubjectTerms | Bathymetry Geologic depressions Gravity Anomaly Median Tectonic Line Ocean floor Pleistocene Quaternary Sada-misaki Peninsula Sand Sub-bottom Profiling Tidal currents |
| Title | Bathymetric, Subsurface, and Gravity Survey off the Sada-misaki Peninsula, the Seto Inland Sea |
| URI | https://www.jstage.jst.go.jp/article/jamstecr/27/0/27_13/_article/-char/en https://www.proquest.com/docview/2232513246 |
| Volume | 27 |
| hasFullText | 1 |
| inHoldings | 1 |
| isFullTextHit | |
| isPrint | |
| ispartofPNX | JAMSTEC Report of Research and Development, 2018/09/01, Vol.27, pp.13-25 |
| link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV1Bb9MwFLbK4MAFgQBRGMgHJA5tSpM0ScNtoI7BxjZYKvVE9OLE0MI6lDSgcuWP89lO0hQmBFyiyHabyO_Le9-zn99j7DEYbBJK6VuZEyaWogxWEoSppVLHgC_Y0tML-m-O_YPp6PXMm3U6P1pRS-UqGYjvl54r-R-pog1yVadk_0GyzZ-iAfeQL66QMK5_JePnoG_rc1UTS5gIm6Qoc1mti6sV8Zc56doQZ2X-NVN76SYg4IxSsiBgsMfeabbU8eiaROrODHT01fKzjunMaIu9wu2PJmqX6fTkXaQChur9Jp2lqlXQs4FFuZh_I13LqBddFB_n68YMHNKSQJeL8tK-gtbmR_SJZHk-b69O2OMm_KqyHLD4GzWlXnyzY9Db06dLW8oXusQCQzUKL9NtqmSW5Xq6_HCjsU02gUrlmqOsv1oCL7THpgIBPhaRD5xgYLsbm1fv8x-fxPvTo6M4msyiK-yqA4AqNXn4dtws1EHjwYtSobDN-5nkn-oRT7cfsEVuri3A7z_8buQ1c4lushuVy8H3DH5usc6CbrP3Lez0-QY5fY7p4xVuuMENB244oMFbuOENbvqmC6jhBjW4pztsuj-JXhxYVa0NS9i-51pS510KhnKYCS-h0PWFPxqLAN44BeT5mtcnIpWeI6SfZiGYTWiTUMl-QAPJvct2lhfL7B7jLkh6AtMwTBMa0VhQ6khypI9WkaaB02VP6kmKv5iUKjFcUTWdcT2dsRPEtttlz8wcNuOqT21r3NAMbvrUcUVohy7brec9rr7ZIgYZBqGHE-Hf_3P3A3Z9A-ddtrPKy-wh6OcqeaTh8RM_qIep |
| linkProvider | Colorado Alliance of Research Libraries |
| openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Bathymetric%2C+Subsurface%2C+and+Gravity+Survey+off+the+Sada-misaki+Peninsula%2C+the+Seto+Inland+Sea&rft.jtitle=JAMSTEC+REPORT+OF+RESEARCH+AND+DEVELOPMENT&rft.au=Fujiwara%2C+Toshiya&rft.au=Kanamatsu%2C+Toshiya&rft.au=Kasaya%2C+Takafumi&rft.date=2018-09-01&rft.pub=Japan+Science+and+Technology+Agency&rft.issn=1880-1153&rft.eissn=2186-358X&rft.volume=27&rft.spage=13&rft_id=info:doi/10.5918%2Fjamstecr.27.13&rft.externalDBID=NO_FULL_TEXT |
| thumbnail_l | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1880-1153&client=summon |
| thumbnail_m | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1880-1153&client=summon |
| thumbnail_s | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1880-1153&client=summon |