Hillslope sediment fence catch efficiencies and particle sorting for post‐fire rain storms,Earth Surface Processes and Landforms

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Hillslope sediment fence catch efficiencies and particle sorting for post‐fire rain storms
Earth Surface Processes and Landforms ( IF 2.8 ) Pub Date : 2020-10-21 , DOI: 10.1002/esp.5021
Codie Wilson ₁ , Stephanie K. Kampf ₂ , Joseph W. Wagenbrenner ₃ , Lee H. MacDonald ₁ , Hunter Gleason ₄

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Sediment fences are often used to monitor hillslope erosion, but these can underestimate sediment yields due to overtopping of runoff and associated sediment. We modified four sediment fences to collect and measure the runoff and sediment that overtopped the fence in addition to the sediment deposited behind the fence. Specific objectives were to: (1) determine the catch efficiency of sediment fences measuring post‐fire hillslope erosion; (2) assess particle sorting of sand, silt/clay, and organic matter from each hillslope through the sediment fence and subsequent runoff collection barrels; (3) evaluate how catch efficiency and particle size sorting relate to site and rainfall‐runoff event characteristics; and (4) use runoff simulations to estimate sediment fence volumes for future post‐fire monitoring.

中文翻译：

坡面沉积物围栏提高了捕捞后暴雨的效率并进行了颗粒分类

沉积物围栏通常用于监测山坡侵蚀，但由于径流和相关沉积物的超标，它们可能会低估沉积物的产量。我们修改了四个沉积物围栏，以收集和测量除沉积在围栏后面的沉积物外，超出围栏的径流和沉积物。具体目标是：（1）确定用于测量火后山坡侵蚀的沉积物围栏的捕捞效率；（2）评估每个山坡上穿过沉积物围栏和随后的径流收集桶的沙子，淤泥/粘土和有机物的颗粒分类；（3）评估捕捞效率和粒度分类与场地和降雨径流事件特征之间的关系；（4）使用径流模拟来估算沉积物围栏的体积，以便将来进行火灾后的监测。

更新日期：2020-10-21

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