Clarification on the relationships between soil and land surface conditions and threshold wind speeds for aeolian dust generation aimed at the evaluation of wide-area wind erosion
Project/Area Number |
21710031
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Research Category |
Grant-in-Aid for Young Scientists (B)
|
Allocation Type | Single-year Grants |
Research Field |
Environmental impact assessment/Environmental policy
|
Research Institution | Tottori University |
Principal Investigator |
|
Project Period (FY) |
2009 – 2012
|
Project Status |
Completed (Fiscal Year 2012)
|
Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2012: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
|
Keywords | 風食 / 砂漠化 / ダスト / 黄砂 / 気候変動 / 気象災害 / 土地利用 |
Research Abstract |
We investigated the cause of frequent dust events in East Asia since 2000. We developed a methodology to statistically estimate a threshold wind speed for dust generation using meteorological observatory data, and we employed this threshold speed as an index of soil and land surface conditions. We clarified that a major cause of increased dust events is a desertification (i.e., a decrease of threshold speed) in Mongolia, eastern Inner Mongolian and the northeastern China from an analysis of dust generation frequeny, strong wind frequency, and threshold speed.
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Report
(5 results)
Research Products
(31 results)