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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Environmental Science / Faculty of Environmental Earth Science >
Peer-reviewed Journal Articles, etc >
A Lacustrine Biomarker Record From Rebun Island Reveals a Warm Summer Climate in Northern Japan During the Early Middle Holocene Due to a Stronger North Pacific High
| Title: | A Lacustrine Biomarker Record From Rebun Island Reveals a Warm Summer Climate in Northern Japan During the Early Middle Holocene Due to a Stronger North Pacific High |
| Authors: | Yamamoto, Masanobu Browse this author →KAKEN DB | | Wang, Fangxian Browse this author | | Irino, Tomohisa Browse this author →KAKEN DB | | Suzuki, Kenta Browse this author | | Yamada, Kazuyoshi Browse this author →KAKEN DB | | Haraguchi, Tsuyoshi Browse this author →KAKEN DB | | Gotanda, Katsuya Browse this author →KAKEN DB | | Yonenobu, Hitoshi Browse this author →KAKEN DB | | Chen, Xuan-Yu Browse this author | | Tarasov, Pavel Browse this author |
| Keywords: | climate change | | Northern Japan | | holocene | | lateglacial | | Biomarkers | | rebun | | RK12 |
| Issue Date: | 14-Jun-2021 |
| Publisher: | Frontiers Media |
| Journal Title: | Frontiers in Earth Science |
| Volume: | 9 |
| Start Page: | 704332 |
| Publisher DOI: | 10.3389/feart.2021.704332 |
| Abstract: | The summer climate of northern Japan since the last glacial period has likely been determined by atmospheric and oceanic dynamics, such as changes in the North Pacific High, the position of the westerlies, the Kuroshio Current, the Tsushima Warm Current (TWC), and the East Asian summer monsoon. However, it is unclear which factor has been most important. In this study, we analyzed leaf wax delta C-13 and delta D and glycerol dialkyl glycerol tetraethers (GDGTs) in sediments from Lake Kushu, Rebun Island, northern Japan, and discuss changes in climate over the past 17,000 years. The GDGT-based temperature, the averaged chain length, delta C-13 and delta D of long-chain n-fatty acids indicated that the climate was cold during the Oldest Dryas period similar to 16 ka and warm in the early Middle Holocene from similar to 9 to 6 ka. This climate change is consistent with the sea surface temperature in the Kuroshio-Oyashio transition, but inconsistent with changes in the TWC in the Sea of Japan. The results imply that the summer climate of northern Japan was controlled mainly by changes in the development of the North Pacific High via changes in the position of the westerly jet and East Asian summer monsoon rainfall, whereas the influence of the TWC was limited over a millennial timescale. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/82423 |
| Appears in Collections: | 環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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