| Project/Area Number |
19340151
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Geology
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| Research Institution | Kobe University |
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Principal Investigator |
HYODO Masayuki Kobe University, 内海域環境教育研究センター, 教授 (60183919)
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| Co-Investigator(Kenkyū-buntansha) |
KTOH Shigehiro 兵庫県立人と自然の博物館, 自然・環境評価部門, 主任研究員 (50301809)
MISHIMA Toshiaki 神戸大学, 内海域環境教育研究センター, 学術研究員 (50448396)
松下 まり子 独立行政法人文化財研究所奈良文化財研究所, 埋蔵文化財センター, 客員研究員 (50110804)
糸田 千鶴 太成学院大学, 人間学部, 准教授 (80246800)
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| Co-Investigator(Renkei-kenkyūsha) |
MATSUSHITA Mariko 独立行政法人文化財研究所, 奈良文化財研究所, 客員研究員 (50110804)
ITOTA Chizu 太成学院大学, 人間学部, 教授 (80246800)
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| Project Period (FY) |
2007 – 2009
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| Project Status |
Completed (Fiscal Year 2009)
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| Budget Amount *help |
¥14,170,000 (Direct Cost: ¥10,900,000、Indirect Cost: ¥3,270,000)
Fiscal Year 2009: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2008: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2007: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
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| Keywords | 第四紀 / 地磁気逆転 / 古気候 / 寒冷化 / 古地磁気学 / ガウス・マツヤマ境界 / 中国黄土高原 / 花粉分析 / 大阪湾 / ショートイベント / 地磁気エクスカーション / 気候変化 |
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| Research Abstract |
Detailed paleomagnetic variations from loess reveal the Gauss-Matuyama (G-M) polarity transition accompanies geomagnetic disturbance with > 20 rapid polarity flips. The G-M transition is recorded in the loess layer that lies just below the Quaternary and just above the Red Clay layer, and is characterized by a cold-dry climate with the strongest winter monsoon in the Plio-Pleistocene. The coincidence of the geomagnetic disturbance and the super cold-dry climate just before the start of the Quaternary suggests a link between geomagnetic field and climate. Similar multiple polarity flips are observed in the Upper-Olduvai and Matuyama-Brunhes polarity transition.
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