Investigation of a large land slide fracture by using cosmic-ray muons in Canary Islands

• Project/Area Number: 15K17747
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Solid earth and planetary physics
• Research Institution: The University of Tokyo
• Principal Investigator: MIYAMOTO Seigo 東京大学, 地震研究所, 助教 (80402444)
• Research Collaborator: MORISHIMA Kunihiro 名古屋大学, 大学院・理学研究科, 助教 ; Pedro Hernandez スペイン再生エネルギー技術研究機構, 主任研究員
• Project Period (FY): 2015-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 山体崩壊 / 断層 / ミューオン / ミュオン / 原子核乾板 / ラジオグラフィ / 火山 / ラジオグラフィー

Outline of Final Research Achievements

We attempted to observe the shape and porosity of fracture or faults predicted to be a sign of massive mountain collapse on one of the Spanish Canary Islands, La Palma.Ten pieces of emulsion films and nine of 1mm-thick lead plates were stacked with sandwich structure. This type of detector have strong noise reduction power. This was installed in front of the fracture/fault outcrop of La Palma Island in January, 2016. In June, we completed collection of all the films, we were able to successfully finish the observation with an effective area of 0.75 m2 and observation period 3 months. The image analysis and reconstruction of muon track was done except some amount of emulsion films. We are under summarizing the last results for submit this to the academic journal.

Research Products

• [Int'l Joint Research] カナリア諸島火山研究所/再生可能エネルギー研究機構(スペイン)
• [Int'l Joint Research] ナポリ大学/サレルノ大学/グランサッソ国立原子物理学研究所(イタリア)
• [Int'l Joint Research] カナリア諸島火山研究所/再生可能エネルギー研究機構(スペイン)
• [Int'l Joint Research] ナポリ大学/グランサッソ国立原子核物理研究所(イタリア)
• [Journal Article] Muography of 1949 fault in La Palma, Canary Islands, Spain (2017)
  • Author(s): Seigo Miyamoto, Jose Barrancos, Cristiano Bozza, Lucia Consiglio, Chiara De Sio, Pedro Hernandez, Ryuichi Nishiyama, German Padilla, Eleazar Padron, Chiara Sirignano, Simona Maria Stellacci, Hiroyuki KM Tanaka, Valeri Tioukov
  • Journal Title: ANNALS OF GEOPHYSICS Volume: 60 Issue: 1 Pages: 1-5
  • DOI: 10.4401/ag-7385
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Cosmic muon imaging: a challenging application to investigate deeper volcanic structures in Canary Islands, Spain (2016)
  • Author(s): Pedro A. Hernandez, Seigo Miyamoto, Valery Tiukov, Jose Barrancos, Chiara Sirignano, Ryuichi Nishiyama, Hiroyuki Tanaka and Nemesio Perez
  • Journal Title: Near Surface Geophysics Volume: -
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Application of Emulsion Cloud Chamber to cosmic-ray muon radiography (2015)
  • Author(s): Ryuichi Nishiyama, Seigo Miyamoto, Naotaka Naganawa
  • Journal Title: Radiation Measurements Volume: 83 Pages: 56-58
  • DOI: 10.1016/j.radmeas.2015.04.013
  • Peer Reviewed
• [Presentation] 宇宙線ミューオンによる火山透視： 原子核乾板技術の活躍 (2017)
  • Author(s): 宮本 成悟
  • Organizer: 2016年度 日本写真学会 原子核乾板技術研究発表会
  • Place of Presentation: 名古屋大学「坂田・平田ホール」(愛知県・名古屋市)
  • Year and Date: 2017-02-15
• [Presentation] The imaging of internal density structure for geo-scientific target with cosmic-ray muons (2015)
  • Author(s): Seigo Miyamoto
  • Organizer: The 1st International Conference on Advanced Imaging
  • Place of Presentation: National Center of Science (Hitotsubashi Memorial Hall 1F,2F), Chiyoda-ku, Tokyo
  • Year and Date: 2015-06-17
  • Int'l Joint Research