Modeling of Karstification Processes in Minamidaito Island, Nansei Islands.

2013 Fiscal Year Final Research Report

• Project/Area Number: 23501250
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Geography
• Research Institution: Hosei University
• Principal Investigator: URUSHIBARA-YOSHINO Kazuko (漆原 和子) 法政大学, 国際日本学研究所, 客員所員 (00101329)
• Research Collaborator: LAUZITZEN Stein-erik Bergen University, Depertment of Earth Sciences, Professor ; SLABE Tadej Karst Institute Slovenian Academy of Science, Head of Karst Institut ; KNEZ Martin Karst Institute Slovenian Academy of Science, Reseacher, Karst Institut
• Project Period (FY): 2011 – 2013
• Keywords: 南大東島 / カルスト化過程 / ドロマイト / 溶食率 / カルスト地形 / 鍾乳洞 / 化石土壌 / ライムストーンウオール

Research Abstract

Modeling of Karstification in Minamidaito Island was made. Using solution rate of limestone tablets, following results were obtained:
Present terrain as karstified atoll has been formed during the age of about 1.6Ma.. Result of the dating speleothems showed that lowering of caves at the bottom basin of Minamidaito Island has begun after the years of 100ka. According to the vadose speleothems and the result of borehole studies, lowest sea level was -100m, in the Last Glacial Period. So, it is considered that caves were formed also until -100m a.s.l., in the same period.

Research Products

• [Journal Article] Karstification processes in Minamidaito Island in the Nansei Archipelago, Southwest Japan (2014)
  • Author(s): KENEZ Martin, SLABE Tadej, URUSHIBARA-YOSHINO Kazuko
  • Journal Title: Acta Carsoligica, Slovenia Volume: 42(2) (in print)
  • Peer Reviewed
• [Journal Article] Karst Processes in Minamidaito Island in the Nansei Archipelago, Southwest Japan (2014)
  • Author(s): URUSHIBARA-YOSHINO Kazuko, SLABE Tadej, KENEZ Martin
  • Journal Title: For Special Issue of Geomorphology (Netherland) Volume: (in print)
  • Peer Reviewed
• [Journal Article] 南大東における海岸の溶食微地形について (2013)
  • Author(s): 漆原和子
  • Journal Title: 法政大学文学部紀要 Volume: (67) Pages: 71-83
• [Journal Article] 南大東島におけるカルスト化過程の一考察 (2012)
  • Author(s): 漆原和子
  • Journal Title: 法政文学文学部紀要 Volume: (65) Pages: 83-95
• [Presentation] Lithology, Rock Relief and Karst Development in Colal Minamidaito Island (Nansei Archipelago, Southeast Japan), Karst Geosites (2014)
  • Author(s): URUSHIBARA-YOSHINO Kazuko, KENEZ Martin, SLABE Tadej
  • Organizer: 4th International symposium on Karst
  • Place of Presentation: Cave Santanna, Favignana, Italy
  • Year and Date: 2014-05-30
• [Presentation] Karst geomorphology : from hydrological functioning to palaeoenvironmental reconstructions (2013)
  • Author(s): KNEZ Martin, SLABE Tadej
  • Organizer: 8th International Congress on Geomorphology
  • Place of Presentation: Paris (フランス)
  • Year and Date: 20130827-31
• [Presentation] (2013)
  • Author(s): 漆原和子
  • Organizer: JGU 夏の学校・カルスト地形
  • Place of Presentation: 東京大学柏キャンパス総合研究棟
  • Year and Date: 2013-10-13
• [Presentation] Karsttification Processes in Minamidaito Island in Nansei Shoto southwest Japan (2013)
  • Author(s): URUSHIBARA-YOSHINO Kazuko, OPPATA Yasuyuki
  • Organizer: IGU Regional Conferrnce
  • Place of Presentation: Kyoto (京都国際会議場)
  • Year and Date: 2013-08-08
• [Presentation] The Dating of Speleothems in Minamidaito Island, in Southwest of Islands, Japan (2013)
  • Author(s): URUSHIBARA-YOSHINO Kazuko, LAURITZEN Stain-Erik
  • Organizer: IGU Regional Conference
  • Place of Presentation: Kyoto (京都国際会議場)
  • Year and Date: 2013-08-08