Reconstruction of North Pacific DICE by Ice Core Analyses

2002 Fiscal Year Final Research Report Summary

• Project/Area Number: 13640432
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Meteorology/Physical oceanography/Hydrology
• Research Institution: HOKKAIDO UNIVERSITY
• Principal Investigator: SHIRAKAWA Takayuki Hokkaido Univ., Inst. Low Temp. Sci., Inst., 低温科学研究所, 助手 (90235739)
• Co-Investigator(Kenkyū-buntansha): TANAKA Noriyuki Frontier Research System for Global Change, International Arctic Research Center, IARC複合分野, グループリーダー (10261348)
• Project Period (FY): 2001 – 2002
• Keywords: Ice core / Climate change / DICE / PDO / Kamchatka / North Pacific / glacier model / glacier

Research Abstract

North Pacific DICE (Decadal and Interdecadal Climatic Event) was reconstructed from the analyses of 212 m-long ice core recovered at Ushkovsky Ice cap, Kamchatka, Russia. We developed analytical and numerical glacier-mechanical models in order to compensate the total strain so that we could reconstruct the 170-year time series of annual accumulation rates. Our spectral analysis showed that the acoumulation rates have spectra of 32.1, 12.2, 5.1 and 3.7 years. The time-series has clear negativc corrclation with so called PDO Index (Pacific Decadal Oscillations : Mantua et al., 1997). The results suggest that the accumulation rate changes in Kamchatka are strongly controlled by the atmospheric field covering the whole North Pacific Ocean.

Research Products

• [Publications] Shiraiwa, T., Tchoumitchev, S.: "Mountain environment in Kamchatka : physical backgrounds and recent changes in the mountain cryosphere"Global Environmental Research. 6. 19-30 (2002)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] 白岩孝行, 山口悟: "カムチャツカ半島の近年の氷河質量収支変動と気候変動復元"地学雑誌. 111. 476-485 (2002)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Salamatin, A.H., Shiraiwa, T., Muravyev, Y.D., Ziganshin, M.F.: "Heat transfer in the seasonal active layer of Gorshkov Ice Cap on the summit of Ushkovsky volcano, Kamchatka Peninsula"Bulletin of Glaciological Research. 19. 47-52 (2002)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Shiraiwa, T., Muravyev, Y.D., Kameda, T., Nishio, F., toyama, Y., Takahashi, A., Ovsyannikov, A.A., Salamatin, A.N., Yamagata, K.: "Characteristics of a crater glacier at Ushkovsky volcano as revealed by the physical properties of ice cores and borehole thermometry"J. Glaciology. 47. 423-432 (2001)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] Shiraiwa, T., Tchoumitchev, S.: "Mountain environment in Kamchatka : physical backgrounds and recent changes in the mountain cryosphere"Global Environmental Research. 6,1. 19-30 (2002)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Shiraiwa, T., Yamaguchi, S.: "Reconstruction of glacier mass balances and climate changes in the Kamchatka Peninsula"Journal of Gergraphy. 111,4. 476-485 (2002)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Salamatin, A.N., Shiraiwa, T., Muravyev, Y.D., Ziganshin, M.F.: "Heat transfer in the seasonal active layer of Gorshkov Ice Cap on the summit of Ushkovsky volcano, Kamchatka Peninsula"Bulletin of Glaciological Research. 19. 47-52 (2002)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] Takahashi, A., Ovsyannikov, Y.D., Kameda, T., Nishio, F., Toyama, Y., Takahashi, A., Ovsyannikov, A.A., Salamation, A.N., Yamagata, K.: "Characteristics of a creater glacier at Ushkovsky volcano as revealed by the physical properties of ice cores and borehole thermometry"J. Glaciology. 47,158. 423-432 (2001)
  • Description: 「研究成果報告書概要(欧文)」より