Journal of Desert Research ›› 2025, Vol. 45 ›› Issue (1): 185-194.DOI: 10.7522/j.issn.1000-694X.2024.00158
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Fang Ma1,2(), Ping Lv2(
), Min Cao2, Junlin Yu2, Zishu Xia2
Received:
2024-09-27
Revised:
2024-11-08
Online:
2025-01-20
Published:
2025-01-13
Contact:
Ping Lv
CLC Number:
Fang Ma, Ping Lv, Min Cao, Junlin Yu, Zishu Xia. Coexistence of barchan dunes and dome dunes and its causes in the Qaidam Basin[J]. Journal of Desert Research, 2025, 45(1): 185-194.
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URL: http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2024.00158
区域 编号 | 新月形沙丘 | 穹状沙丘 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Sb/m2 | Ls/m | Ll/m | Wb/m | Hb/m | Db/(°) | Ls/Wb | Sd/m | Lc/m | Ld/m | Dd/(°) | Lc /Ld | |
CDM1 | 682±306 | 15±3 | 3±1 | 33±8 | 1.9±1 | 65±11 | 0.7±0.2 | 328±108 | 22±4 | 19±4 | 53±19 | 1.2±0.2 |
CDM2 | 1 465±617 | 20±5 | 8±1 | 49±12 | 4.5±1 | 69±14 | 0.6±0.1 | 647±432 | 31±9 | 23±8 | 49±8 | 1.3±0.2 |
Table 1 Morphologyical characteristics of coexisting barchan and dome dunes
区域 编号 | 新月形沙丘 | 穹状沙丘 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Sb/m2 | Ls/m | Ll/m | Wb/m | Hb/m | Db/(°) | Ls/Wb | Sd/m | Lc/m | Ld/m | Dd/(°) | Lc /Ld | |
CDM1 | 682±306 | 15±3 | 3±1 | 33±8 | 1.9±1 | 65±11 | 0.7±0.2 | 328±108 | 22±4 | 19±4 | 53±19 | 1.2±0.2 |
CDM2 | 1 465±617 | 20±5 | 8±1 | 49±12 | 4.5±1 | 69±14 | 0.6±0.1 | 647±432 | 31±9 | 23±8 | 49±8 | 1.3±0.2 |
区域 | 沙丘类型 | 移动速率/(m·a-1) | 移动方向/(°) | RDD | ||||
---|---|---|---|---|---|---|---|---|
范围 | 均值 | 标准差 | 范围 | 均值 | 标准差 | |||
CDM1 | 新月形 | 0.5~5.2 | 3.1 | 1.2 | 115.9~157.2 | 143.4 | 7.5 | 139° |
穹状 | 3.5~8.1 | 5.4 | 1.0 | 130.7~154.0 | 143.1 | 5.5 | 139° | |
CDM2 | 新月形 | 5.5~13.6 | 8.0 | 1.8 | 154.2~178.7 | 167.5 | 6.0 | 157.7° |
穹状 | 8.1~15.7 | 12.4 | 2.3 | 137.9~175.7 | 155.1 | 8.6 | 157.7° |
Table 2 Statistics of dune migration in the coexistence area of barchan and dome dunes in the Qaidam Basin
区域 | 沙丘类型 | 移动速率/(m·a-1) | 移动方向/(°) | RDD | ||||
---|---|---|---|---|---|---|---|---|
范围 | 均值 | 标准差 | 范围 | 均值 | 标准差 | |||
CDM1 | 新月形 | 0.5~5.2 | 3.1 | 1.2 | 115.9~157.2 | 143.4 | 7.5 | 139° |
穹状 | 3.5~8.1 | 5.4 | 1.0 | 130.7~154.0 | 143.1 | 5.5 | 139° | |
CDM2 | 新月形 | 5.5~13.6 | 8.0 | 1.8 | 154.2~178.7 | 167.5 | 6.0 | 157.7° |
穹状 | 8.1~15.7 | 12.4 | 2.3 | 137.9~175.7 | 155.1 | 8.6 | 157.7° |
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