International Joint Research for Establishment of Tephra Network in the Philippines

2015 Fiscal Year Final Research Report

• Project/Area Number: 24401006
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 海外学術
• Research Field: Geography
• Research Institution: Fukuoka University
• Principal Investigator: Okuno Mitsuru 福岡大学, 理学部, 教授 (50309887)
• Co-Investigator(Kenkyū-buntansha): TAGUCHI Sachihiro 福岡大学, 理学部, 教授 (00108771) ; KOBAYASHI Tetsuo 鹿児島大学, 理工学研究科, 教授 (70112430)
• Co-Investigator(Renkei-kenkyūsha): NAKAMURA Toshio 名古屋大学, 宇宙地球環境研究所, 教授 (10135387)
• Research Collaborator: TORII Masayuki 熊本大学, 自然科学研究科, 特任准教授 (40711908) ; FUJIKI Toshiyuki 岡山理科大学, 理学部, 講師 (10377997) ; TAKASHIMA Isao 秋田大学, 名誉教授 (50163192) ; HARAGUCHI Tsuyoshi 大阪市立大学, 理学研究科, 准教授 (70372852) ; YAMADA Kazuyoshi ふじのくに地球環境史ミュージアム, 学芸課, 准教授 (60508167) ; NAKANISHI Toshimichi 福岡大学, 産学官連携研究機関国際火山噴火史情報研究所, 博士研究員 (10462582)
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 火山噴火史 / 広域テフラ / 放射性炭素年代 / 火砕流堆積物 / ボーリング・コア / 珪藻群集分析 / 古環境変遷 / フィリピン

Outline of Final Research Achievements

The Philippines has many volcanoes due to subduction along its trenches similar to the tectonic setting of Japan. In this study, we have conducted geological surveys in Pinatubo, Taal, and Irosin volcanoes, located in Luzon, and Matutum and Parker volcanoes located in Mindanao Island, in collaboration with the Philippine Institute of Volcanology and Seismology (PHIVOLCS). We tried to reconstruct the eruptive history of these volcanoes, and establish a chronological framework of widespread tephras. Cored sediments were obtained from Paitan Lake, about 60 km northeast of Pinatubo Volcano. Ash layers were identified within these cores, and were given ages, with high precision.

Free Research Field

火山地質学