Development of a land surface - dust emission process model based on a detailed observation in the Gobi Desert
| Project/Area Number |
15H05115
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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 | 海外学術 |
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| Research Field |
Environmental dynamic analysis
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| Research Institution | Tottori University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
石塚 正秀 香川大学, 創造工学部, 准教授 (50324992)
西原 英治 鳥取大学, 農学部, 准教授 (40452544)
中村 公一 鳥取大学, 工学研究科, 准教授 (90530642)
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| Research Collaborator |
SEKIYAMA tsuyoshi
MAKI takashi
JUGDER dulam
GANTSETSEG batdelger
BUYANTOGTOKH batjargal
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| Project Period (FY) |
2015-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2018: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2016: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2015: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
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| Keywords | 環境変動 / 自然災害 / 黄砂 / 砂漠化 / 乾燥地 / ゴビ砂漠 / 風食 / ダスト / エアロゾル / 大気・陸面相互作用 |
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| Outline of Final Research Achievements |
We have conducted field experiments for an elucidation of dust emission mechanisms in Tsogt-Ovoo, Mongolia in the Gobi Desert. There is a 10 km-scale topographic depression, which works as a dust source. The source has been created by an accumulation of fine soil particles due to water erosion. When a precipitation amount is high, precipitation water gathers into the depression. It leads to a soil crust creation and a vegetation growth. We clarified that these suppress dust emission (crust effect and dead leave effect). A spatial difference in the pebble amount causes a spatial difference in dust emission (pebble effect). We quantitatively clarified the pebble effect by a numerical experiment, in which pebble amount data obtained from our field observation was applied. We also clarified a relation between soil moisture and hardness of soil crust.
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| Academic Significance and Societal Importance of the Research Achievements |
黄砂は健康、生態系、気候変動等に影響する。発生域では砂塵嵐という気象災害である。健康影響や気象災害といった悪影響を未然に防ぐための予報システム構築や、将来気候予測のためには黄砂発生数値モデルの高精度化が必要であるが、黄砂発生に影響する土壌粒径、土壌水分、レキ、クラスト、植生量といった様々な地表面要素を把握することと各地表面要素と臨界風速（黄砂が発生し始める風速）の関係が明らかになっていないため、今日の黄砂数値モデルの精度は不十分である。本研究では、黄砂が頻繁に発生していることが明らかになっているモンゴルのツォクトオボーにおいて黄砂発生解明のための観測を行い、黄砂数値モデルの精度向上を進めた。
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Report
(5 results)
Research Products
(48 results)
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[Journal Article] Variations in the structure of airborne bacterial communities in Tsogt-Ovoo of Gobi Desert area during dust events2016
Author(s)
Maki, T., Y. Kurosaki, K. Onishi, K.C. Lee, S.B. Pointing, D. Jugder, N. Yamanaka, H. Hasegawa, M. Shinoda
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Journal Title
Air Quality, Atmosphere and Health
Volume: 10(3)
Issue: 3
Pages: 249-260
DOI
NAID
Related Report
Peer Reviewed / Open Access / Int'l Joint Research
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[Journal Article] A tribute to Michael R. Raupach for contributions to aeolian fluid dynamics2015
Author(s)
Shao, Y., Nickling, W., Bergametti, G., Butler, H., Chappell, A., Findlater, P., Gillies, J., Ishizuka, M., Klose, M., Kok, J. F., Leys, J., Lu, H., Marticorena, B., McTainsh, G., McKenna-Neuman, C., Okin, G. S., Strong, C., Webb, N.
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Journal Title
Aeolian Research
Volume: 19(A)
Pages: 37-54
DOI
Related Report
Peer Reviewed / Int'l Joint Research
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[Journal Article] Vertical distribution of airborne bacterial communities in an Asian dust downwind area, Noto Peninsula2015
Author(s)
Maki T., Hara K., Kobayashi F., Kurosaki Y., Kakikawa M., Matsuki A., Chen B., Shi G., Hasegawa H., Iwasaka Y.
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Journal Title
Atmospheric Environment
Volume: 119
Pages: 282-293
DOI
NAID
Related Report
Peer Reviewed / Int'l Joint Research
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[Presentation] Experimental study on motion characteristics of saltating grains under crusted soils related to the dust emission in drylands2018
Author(s)
Nakahara Y., Ishizuka, M., Kurosaki, Y., Hagino, H., Batdelger, G., Nanko, K., Suzuki, S. and Nakamura, K.
Organizer
the 2018 joint 14th iCACGP Quadrennial Symposium/15th IGAC Science Conference
Related Report
Int'l Joint Research
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[Presentation] Soil erodibility over Mongolia2016
Author(s)
Dulam Jugder
Organizer
International Asian Dust Workshop & WMO SDS-WAS meetings
Place of Presentation
National Institute of Meteorological Sciences, Jeju, S. Korea.
Year and Date
2016-09-20
Related Report
Int'l Joint Research
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[Presentation] Possible key erodibility factors for dust emission in the Gobi Desert - findings from studies in the Project Asian Dust, Tottori University2016
Author(s)
Y. Kurosaki, M. Ishizuka, G. Batdelger, B. Batjargal, Y. Yamada, M. Mikami, A. Abulaiti, M. Shinoda, D. Jugder
Organizer
Twelfth International Conference on Development of Drylands (ICDD)
Place of Presentation
Bibliotheca Alexandrina, Alexandria, Egypt
Year and Date
2016-08-21
Related Report
Int'l Joint Research
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[Presentation] Possible key aeolian erodibility factors in a norther area of the Gobi Desert, Mongolia2016
Author(s)
Yasunori Kurosaki, Masahide Ishizuka, Batdelger Gantsetseg, Buyantogtoh Batjargal, Yutaka Yamada, Masato Shinoda, Masao Mikami, and Dulam Jugder
Organizer
The 9th International Conference on Aeolian Research (ICAR IX)
Place of Presentation
Quality Hotel Mildura Grand, Mildura, Australia
Year and Date
2016-07-03
Related Report
Int'l Joint Research
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