一种新的风蚀取样器,称为“Mendeźs捕集器(MT)”。描述及在壤土中的现场性能试验

IF 3.1 3区 地球科学 Q2 GEOGRAPHY, PHYSICAL
Mariano J. Mendez
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引用次数: 0

摘要

本研究的目的是描述一种名为Mendeźs捕集器(MT)的新型捕集器的构造细节,并将其与大弹簧8号(BSNE)和改良Wilson and Cook (MWAC)的性能进行比较。文中详细描述了MT的尺寸、方案和照片。为了评估MT的性能,在无覆盖物和粗糙度的壤土上,分别在22.5、43、63、112和164 cm高度安装MT、BSNE和MWAC,测量了11个风蚀事件。对收集的物料进行称重并除以入口面积,得到水平质量通量(HMF)。结果表明,MT测得的HMF与BSNE和MWAC测得的HMF有很强的相关性。相对效率(不同样品HMF之间的回归曲线斜率)显示,MT效率比BSNE高31.83%,MWAC效率比MT高81.37%。不同高度的相对效率不同,但相对效率与高度没有关系。平均采食量在22.5 cm处最高(MT为1.74 g),在164 cm处最低(MWAC为0.03 g)。在所有高度,收集的沉积物量按MT >序列排序;BSNE祝辞MWAC。重量大于0.1 g、0.2 g、0.3 g、0.4 g、0.5 g的样品按MT >顺序排序;BSNE祝辞MWA。野外评价结果表明,MT、BSNE和MWAC测量的HMF值可进行比较,MT可用于风蚀研究。MT比MWACs和BSNEs收集更多的材料,这在通常收集少量材料的较高高度尤为重要。本研究的结果必须在其他质地类型的土壤中得到证实,并且必须在风洞中测量粒径和风速对MT效率的作用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

A new wind erosion sampler called “Mendeźs trap (MT)”. Description and field performance test in a loamy sand soil

A new wind erosion sampler called “Mendeźs trap (MT)”. Description and field performance test in a loamy sand soil

The aim of this study was to describe the constructive details of a new collector called Mendeźs Trap (MT) and to compare its performance with the Big Spring Number Eight (BSNE) and Modified Wilson and Cook (MWAC). A detailed description of the MT with dimensions, schemes, and photos is included in the paper. To evaluate the performance of the MT, eleven wind erosion events were measured with MT, BSNE, and MWAC installed at 22.5, 43, 63, 112, and 164 cm height on a loamy sand soil without cover and roughness. The material collected was weighed and divided by the inlet area to obtain the horizontal mass flux (HMF). Results showed that the HMF measured with MT is strongly correlated to the HMF measured with BSNE and MWAC. Relative efficiencies (slope of the regression curve between HMF of different samplers) showed that MT is 31.83% more efficient than BSNE and that MWAC is 81.37% more efficient than MT. Different relative efficiencies were measured at different heights, but no relationships between the relative efficiency and height were found. The average amounts of material collected were the highest at 22.5 cm height (1.74 g for MT) and the lowest at 164 cm height (0.03 for MWAC). At all heights, the amounts of sediments collected were ordered in the sequence MT > BSNE > MWAC. Percentages of samples weighing more than 0.1 g, 0.2 g, 0.3 g, 0.4 g, 0.5 g were ordered in the sequence MT > BSNE > MWA. Field evaluation showed that, the HMF measured with MT, BSNE, and MWAC can be compared, and MT can be used in wind erosion studies. MT collects more amounts of material than MWACs and BSNEs, which is especially important at greater heights where little amounts of material are normally collected. The results of this study must be confirmed in soils of other texture classes and the role of the particle size and wind speed in the efficiency of the MT must be measured in wind tunnel.

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来源期刊
Aeolian Research
Aeolian Research GEOGRAPHY, PHYSICAL-
CiteScore
7.10
自引率
6.10%
发文量
43
审稿时长
>12 weeks
期刊介绍: The scope of Aeolian Research includes the following topics: • Fundamental Aeolian processes, including sand and dust entrainment, transport and deposition of sediment • Modeling and field studies of Aeolian processes • Instrumentation/measurement in the field and lab • Practical applications including environmental impacts and erosion control • Aeolian landforms, geomorphology and paleoenvironments • Dust-atmosphere/cloud interactions.
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