于2007年春季(风季),利用DETI可移动测风系统对古尔班通古特沙漠半固定沙垄进行实地观测,系统研究沙垄表面2m高度气流速度变化规律,发现坡脚风速、入射角和坡面形态对其有显著影响。在大气呈中性稳定的条件下,风速由迎风坡脚至丘顶逐渐加速,在垄顶达到最大,至背风坡的中上部剧烈降低,此后又逐渐恢复。垄顶风速随坡脚风速的增大而线性增大。在相同风速条件下,大角度入射时迎风坡的风速增加幅度和背风坡的风速降低幅度均明显高于小角度入射的情形,可见入射角的大小控制着沙垄表面风速的变化幅度。地形对风速变化的影响在于 ...
盖世广 +6 more
doaj +1 more source
Soil Water Characteristics of Different Aerial-seeded Plant Communities at Northeastern Edge of Tengger Desert [PDF]
[Objective] Soil water characteristics of different plant communities at different slope positions on aerial-seeded afforestation areas in 1992 were studied at the northeastern edge of the Tengger Desert in order to provide a theoretical basis for the ...
Ge Nan +4 more
core +1 more source
Influence characteristics of regional micrometeorology on macroscopic scale of external dump [PDF]
To study the relationship of external dump of opencast coal mine impacting on surrounding micrometeorological factors, and then provide the foundation acknowledge for the ecological restoration in mining area, the airflow movement and water distribution ...
Chendong LIU +7 more
core +1 more source
Structural evolution characteristics and cause analysis of heavy rain of transition typhoon "Maysak" [PDF]
Typhoon "Maysak" (2009) was formed of the East ocean in the Philippines, then moved north along the coastal waters of China and continued to strengthen, reaching a super typhoon at its strongest.
Li REN
core +1 more source
The role and characteristics of low-level jet during a persistent rainstorm in Guangxi [PDF]
In 2022, Guangxi experienced the strongest Dragon Boat Precipitation since the founding of the People's Republic of China. The persistent rainstorm process from 17 June to 22 June 2022 had large accumulations and overlapping falling areas, leading to ...
Hao QIN +4 more
core +1 more source
Numerical Simulation of Windbreak and Sand Fixation Effects of an Integrated Sand-retaining Dike and Sand-fixing Brick System [PDF]
[Objective] In view of the sand burying problem caused by the wind and sand flow on the highway in Bashang area of Zhangjiakou City, Hebei Province, a comprehensive wind and sand fixing system of sand retaining dike sand fixing brick was established, and
Li Jiayuan +5 more
core +1 more source
Ecological Protection Effects Provided by Sand Barriers in a Grassland Mining Area [PDF]
[Objective] The wind protection effectiveness of different sand barriers and their effects on surface soil particle size composition, soil nutrients and vegetation growth werer studied in order to provide a theoretical basis for the optimal selection of ...
Cong Longyu +5 more
core +1 more source
Quantitative analysis of water vapor budget of a persistent rainstrom event in Tongren of Guizhou Province [PDF]
This paper focus on revealing the features of the water vapor transport, water vapor budget and the contribution percentage of water vapor source regions of the persistent rainstorm in Tongren from July 13th to 16th, 2014 based on precipitation ...
Chunyan LV +5 more
core +1 more source
Comprehensive analysis of the extreme short-time heavy rain event on 26 June 2022 in Jinsi Gorge, Shangluo [PDF]
Affected by the Hetao trough and low vortex, an extreme short-term heavy rainfall (referred to as the "6.26" event) occurred on 26 June 2022 from 12∶00 BT to 13∶00 BT in the western part of Shangnan County in Shaanxi province.
Damei GUO +5 more
core +1 more source
为明确风水交错侵蚀中风力和水力侵蚀的相互影响,针对风向和径流方向相反(迎风坡)的交错侵蚀,采用人工模拟降雨与风洞试验研究前期风蚀对后继水蚀的影响。结果表明:(1)受前期风蚀影响,后继水蚀产流时间均较仅水蚀提前,径流强度较仅水蚀增大。(2)前期风蚀加剧后继水蚀却未改变其变化趋势。无论是否有前期风蚀影响,后继水蚀速率随降雨历时增加均逐渐增大而后趋于平稳;但当前期风蚀的风速较大时(12,15 m/s),后继水蚀速率较仅水蚀增大最显著,其侵蚀速率高达仅水蚀速率的4.6倍。(3)受前期风蚀影响 ...
白茹茹 +4 more
doaj +2 more sources

