| Project/Area Number |
04044151
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| Research Category |
Grant-in-Aid for international Scientific Research
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| Allocation Type | Single-year Grants |
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| Section | Joint Research |
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| Research Institution | Osaka Sangyo University |
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Principal Investigator |
SUGAHARA Masataka Osaka Sangyo University, 工学部, 教授 (60026119)
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| Co-Investigator(Kenkyū-buntansha) |
GARREC J.-p. French Forest Center, 大気汚染研究所, 所長
KOERNER Roy Ministry of Energy and Mine, 北極氷河部, 部長
KUDO Akira National Research Center, サイバー研究所・環境部門, 部長
MIZOGUCHI Tsuguo National Institute of Public Health, 地域環境部, 部長
IKEDA Yukoh University of Osaka Prefecture, 工学部, 教授 (40026232)
KUDO AKIRA カナダ国立科学研, サイバー研究所・環境部門, 部長
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| Project Period (FY) |
1992 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥22,400,000 (Direct Cost: ¥22,400,000)
Fiscal Year 1994: ¥8,000,000 (Direct Cost: ¥8,000,000)
Fiscal Year 1993: ¥8,000,000 (Direct Cost: ¥8,000,000)
Fiscal Year 1992: ¥6,400,000 (Direct Cost: ¥6,400,000)
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| Keywords | North Pole / Ice Core / Acid Rain / Micro-Pollutants / Pollen / Volcanic Eruption / Canadian Arctic / Ice core / Volcanic Eruption / Microelement / pollen / Volcano |
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| Research Abstract |
The objective of this investigation was successfully achieved during the last three years, mainly due to stable weather in the Arctic, which facilitated the accident free sampling expedition. This research through the Canadian collaborators helped to create an international research organization, ICAPP (International Circum-Arctic Paleoclimate Program). The ICAPP will be recognized as one of PAGES (Past Global Climate Changes) activities under IGBP (International Geosphere and Biosphere Program). The ICAPP now consisted of eight countries (USA,Russia, Denmark, Norway, UK,Geamany and Japan)
During the last 3 years, two full ice cores up to the bed rock (124 m each) which represented 150,000years, (and one ice core of 800 years and 11 ice cores of 70 years) were collected from the Agassiz ice cap in the Canadian Arctic. The ECM (electrical conductivity measurements) data were collected from these ice cores. A portable computer was interfaced with the ECM device. The ECM records revealed t
… More
he history of acid rain during the past 150,000 years. More than 50 distinguishable emission. The difference in acid rain between the historical eruptions and anthropogenic emission was the severity of acidity. The eruptions had short and intense acidity while the anthropogenic emission had long and moderate acidity.
The concentration of radioactive materials from the nuclear weapons testing was quantified for the last 70 years. The radioactive materials included ^<137>Cs and ^<239+240>Pu, besides natural materials such as ^<40>K and ^<210>Pb. The highest concentration was obtained from an ice layr of 1962-1963, just after the international treaty, of the nuclear atmospheric testing ban. The concentration of ^<137>Cs was 2.460 mBq/cm^2 and 4.5 mBq/cm^2 for ^<239+240>Pu. The most interesting information was that the radioactive materials of 1945 explosions (New Mexico, Hiroshima and Nagasaki) was obtained from the ice layrs of 1945-46. The layrs contained 0.04mBq/cm^2 for ^<137>Cs while 0.0007 mBq/cm^2 for ^<239+240>Pu. Some of the data were already published in the Journal of Applied Rediation and Isotopes. Less
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