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2002 Fiscal Year Final Research Report Summary

Reconstruction of the climatic changes from borehole temperature and tree rings in the Kamchatka Peninsula

Research Project

Project/Area Number 12573015
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section海外学術
Research Field Environmental dynamic analysis
Research InstitutionTOKAI UNIVERSITY

Principal Investigator

NAGAO Toshiyasu  Institute of Oceanic Research & Development, Professor, 海洋研究所, 教授 (20183890)

Co-Investigator(Kenkyū-buntansha) TANIGUCHI Makoto  Nara Univ. of Education ,Dept. of Earth Sci. Professor, 教育学部, 教授 (80227222)
YAMANO Makoto  Univ. Tokyo, Earthquake Res. Inst,Associate Professor, 地震研究所, 助教授 (60191368)
SWEDA Tatsuo  Ehime University, Faculty of Agriculture,Professor, 農学部, 教授 (90109314)
KINOSHTIA Masataka  JAMSTBC,Deep Sea Res. Group,Associate Researcher, 深海研究部, 副主幹 (50225009)
OHKUBO Yasukuni  AIST,Geological Survey of Japan, Senior Researcher, 地圏資源環境研究部門, 主任研究官
Project Period (FY) 2000 – 2002
KeywordsKamchatka Peninsula / paleoclimate reconstruction / geothermics / borehole temperature / groundwater flow / stable isotopes / dendrochronology / global warming
Research Abstract

We estimated climate changes in the Kamchatka Peninsula over the last few centuries with two independent, geothermal and dendrochronological methods.
As studies with the geothermal method, we conducted three expeditions in 2000 to 2002 to make repeated measurements of temperature profiles in ten boreholes around 53 degN. The ground surface temperature history could be reconstructed from the temperature profiles in six of the boreholes, demonstrating a significant temperature increase of 1 to 2 K for the last 50 to 100 years. We also made long-tem temperature monitoring at some specific depths in three boreholes and observed temporal variations which suggest the existence of small-scale water convections and seasonal changes in groundwater flow. Groundwater samples were taken from the boreholes where temperature logging was made and surface water samples were also collected from rivers. Geochemical and stable isotope characteristics of the groundwater and surface water were analyzed to e … More valuate the effects of the groundwater flow on the subsurface temperature and climate reconstruction in the study areas.
A 422-year long chronology of ring-width indices representing central Kamchatka was established from tree-ring cores sampled from Larix gmerinii growing natural in the Kronotsky National Park in 2001 based on reconnaissance in 2000. Response analysis of the chronology against observed climate revealed a significant correlation with early-summer temperature. The reconstructed temperature extending back to A.D. 1624 based on the dendrochronology and its response to climate, revealed a general warming trend over the last 130 years and a cyclic oscillation of decadal period. The long-term trend is consistent with the result from the borehole temperature profiles.
Reconstruction of the ground surface temperature history from borehole temperature profiles was also made for three wells in Korea and one well on the coast of Lake Biwa. In Korea, the estimated temperature changes are consistent with the air temperature data at nearby meteorological stations. The surface temperature history by Lake Biwa appears to reflect local environmental changes for the last 5000 years. Less

  • Research Products

    (16 results)

All Other

All Publications (16 results)

  • [Publications] Cermak, Yamano, Nagao他: "Climate change in Kamchatka, evidence from the underground"Proc.International Paleoclimate Reconstruction Workshop, Nov.2002. (in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Furuta, Sano, Sweda: "Summer temperature trend over the past 400 years for central Kamchatka reconstructed from tree ring"Proc.International Paleoclimate Reconstruction Workshop, Nov.2002. (in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Goto, Hamamoto, Yamano, Takahashi: "Past environmental changes in southern Lake Biwa inferred from borehole temperature data"Proc.International Paleoclimate Reconstruction Workshop, Nov.2002. (in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Miyakoshi, Taniguchi, Uemura, Atake: "Evaluation of subsurface flow for reconstructions of climate change using borehole temperature and isotope data in Kamchatka"Proc.International Paleoclimate Reconstruction Workshop, Nov.2002. (in press). (2003)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 末田達彦: "木材の材質変動の利用としての年輪年代学"日本木材学会第7期研究分科会報告書. II. 118-126 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Taniguchi, M.: "Estimations of the past groundwater recharge rate from deep borehole temperature data"CATENA. 48. 39-51 (2002)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Cermak, V., J. Safanda, M. Yamano,Nagao, M. Taniguchi, Y. Okubo, Miyakoshi, E. Gordeev, and L. Bodri: "Climate change in Kamchatka, evidence from the underground"Proc. International Paleoclimate Reconstruction Workshop. Nov. 2002, Matsuyama, Japan (in press)..

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Furuta, F., M. Sano, and T. Sweda: "Summer temperature trend over the past 400 years for central Kamchatka reconstructed from tree ring"Proc. International Paleoclimate Reconstruction Workshop. Nov. 2002, Matsuyama, Japan (in press)..

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Goto, S., H. Hamamoto, M. Yamano, and K Takahashi: "Past environmental changes in southern Lake Biwa inferred from borehole temperature data"Proc. International Paleoclimate Reconstruction Workshop. Nov. 2002, Matsuyama, Japan (in press)..

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Miyakoshi, A. and Y. Okubo: "Continuous measurements of soil temperature for evaluation of the boundary condition of thermal regime"Proc. International Paleoclimate Reconstruction Workshop. Nov. 2002, Matsuyama, Japan (in press)..

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Okubo, Y., H.-C. Kim, Y. Uchida, and J.Safanda: "Borehole data and climate reconstruction in Korea"Proc. International Paleoclimate Reconstruction Workshop. Nov. 2002, Matsuyama, Japan (in press)..

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Taniguchi, M., A. Miyakoshi, Y. Uchida, and Y. Sakura: "A data base of surface and subsurface temperatures in Japan"Proc. International Paleoclimate Reconstruction Workshop. Nov. 2002, Matsuyama, Japan (in press)..

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Taniguchi, M., Y. Sakura, and Y. Uchida: "Effects of urbanization, land-cover changes and groundwater flow on subsurface temperature in Japan"IAHS Publications. 269. 143-145 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Taniguchi, M.: "Estimations of the past groundwater recharge rate from deep borehole temperature data"CATENA. 48. 39-51 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yamakawa, W., O. Kobayashi, and T. Sweda: "A tree-ring reconstruction of past temperature for southwest Japan"Proc. International Paleoclimate Reconstruction Workshop. Nov. 2002, Matsuyama, Japan (in press)..

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Yamano, M., H. Hamamoto, Y. Okubo, A. Miyakoshi, and E. Gordeev: "Long-term monitoring of borehole and soil temperatures in the Kamchatka Peninsula"Proc, International Paleoclimate Reconstruction Workshop. Nov. 2002, Matsuyama, Japan (in press)..

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2004-04-14  

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