Pumped rainfall simulators: the impact of rain pulses on sediment concentration and size
Pumped rainfall simulators: the impact of rain pulses on sediment concentration and size
复制标题
泵送降雨模拟器：降雨脉冲对沉积物浓度和尺寸的影响
DOI：
10.1002/esp.1810
复制
发表时间：
2009
影响因子：
3.3
通讯作者：
Armstrong A
中科院分区：
文献类型：
--
作者：
Armstrong A
许多用于土壤侵蚀研究的抽水降雨模拟器使用脉冲降雨来控制降雨强度。我们研究了降雨脉冲对泥沙浓度和粒径的影响，使用三个不同的脉冲周期，具有相同的降雨强度。在整个脉冲周期中，泥沙浓度变化很大：最高浓度是最低浓度的四倍。此外，粒度分布也不同：峰值中值粒度是最低中值粒度的两倍。沉积物浓度和颗粒大小的差异幅度越大，脉冲周期越长，这些动态将在降雨模拟器和研究之间变化。我们建议对沉积物的脉冲的影响是显着的，应该在实验之前进行调查，使采样周期的设计，以避免偏差引入精细的时间尺度沉积物动力学。版权所有© 2009约翰威利父子有限公司。
Many pumped rainfall simulators used in soil erosion studies use pulsed rain to control the rainfall intensity. We examined the effect of the rain pulsing on sediment concentration and size using three different pulse cycles with the same rainfall intensity. There was considerable variation in sediment concentration through the pulse cycle: the highest concentration was up to four times that of the lowest concentration. Furthermore, the particle size distribution also varied: the peak median particle size was double the lowest median particle size. The magnitude of differences in sediment concentration and particle size were greater the longer the pulse cycle and these dynamics will vary between rainfall simulators and studies. We suggest the impact of the pulsing on sediment is significant and should be investigated prior to experimentation so that sampling periods are designed to avoid bias introduced by fine temporal scale sediment dynamics. Copyright © 2009 John Wiley & Sons, Ltd.
影响因子：
5.4
作者：
B. Heng;G. Sander;C. Scott
通讯作者：
B. Heng;G. Sander;C. Scott
用于径流和土壤侵蚀现场研究的降雨模拟器
DOI：
--
发表时间：
1977
期刊：
影响因子：
--
作者：
I. Grierson;J. Oades
通讯作者：
J. Oades
利用移动式降雨模拟器测量密封和石质红壤土壤径流和土壤侵蚀的收集系统
DOI：
--
发表时间：
1992
期刊：
影响因子：
--
作者：
R. Greene;G. R. Sawtell
通讯作者：
G. R. Sawtell