Soil ice content measurement using a heat pulse probe method
Soil ice content measurement using a heat pulse probe method
复制标题
使用热脉冲探针法测量土壤冰含量
DOI：
10.1139/cjss09120
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发表时间：
2011-06
影响因子：
1.7
通讯作者：
Si Bingcheng
中科院分区：
文献类型：
--
作者：
Liu Gang;Si Bingcheng
Liu，G.和Si，B。C. 2011.用热脉冲探针法测量土壤含冰量。可以的.《土壤科学杂志》91：235 - 246。测量冻土的体积含冰量（i）和导热系数（k）对于模拟地球表面的能量和水分平衡非常重要。本研究的目的是检查是否热脉冲探针（HPP）方法可以用来测量土壤冰含量。为了最大限度地减少冰融化，在不同温度（T）下，将持续时间为60 s、强度为q = 25 W m-1的热脉冲用于冻砂中的HPP。在60 s的加热时间内，我们通过模拟将无限线源（ILS）解和有限线源解与有限样本和有限线源解进行了比较。模拟表明，ILS的60-s加热持续时间可用于无限介质中的长加热器探头，或由绝热材料制成的容器中的有限尺寸样品中的短探头。在这项研究中，沙子被装在小容器与热脉冲探头和60秒的加热时间，ILS用于冰含量估计。我们的研究结果表明，HPP方法在冻土中的应用有限。对于平均粒度为0.41 mm和2.13 mm的砂，分别在低于-22 °C和-18 °C的温度下测量的HPP和重量i值之间具有良好的一致性。然而，高于这些温度，冰融化是显着的，并会导致高估i。初始温度越高，i的高估越大。
Liu, G. and Si, B. C. 2011. Soil ice content measurement using a heat pulse probe method. Can. J. Soil Sci. 91: 235-246. Measuring the volume-based ice content (i) and thermal conductivity (k) of frozen soil is important for modeling energy and water balance of the earth's surface. The objective of this study was to examine whether a heat pulse probe (HPP) method can be used to measure soil ice content. To minimize ice melting, a heat pulse of duration of 60 s and strength of q≈25 W m-1 was used for a HPP in frozen sands at various temperatures (T). For a 60-s heating duration, we compared the infinite line source (ILS) solution and finite line source solution with the solution of finite sample size and finite line source through simulations. The simulation suggested that a 60-s heating duration for ILS can be used for long heater probes in infinite media, or short probes in finite size samples in containers made of thermally insulating materials. In this study, sands were packed in small containers with heat pulse probes and a 60-s heating duration, and ILS were used for ice content estimation. Our results suggest that the HPP method has limited use in frozen soil. For sands with a mean grain size of 0.41 mm and 2.13 mm, there were good agreements between the HPP measured and gravimetric i values at temperature below -22°C and -18°C, respectively. However, above these temperatures, ice melting was significant and would lead to overestimation of i. The higher the initial temperature, the larger the overestimation of i.
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DOI：
10.21236/ada111734
发表时间：
1981-12
期刊：
bioRxiv
影响因子：
--
作者：
O. Farouki
通讯作者：
O. Farouki
影响因子：
--
作者：
Jianping Huang;P. Minnis;B. Lin;Y. Yi;M. Khaiyer;R. Arduini;Alice Fan;G. Mace
通讯作者：
Jianping Huang;P. Minnis;B. Lin;Y. Yi;M. Khaiyer;R. Arduini;Alice Fan;G. Mace
影响因子：
5.4
作者：
P. Black;A. R. Tice
通讯作者：
P. Black;A. R. Tice
DOI：
10.2136/sssaj1992.03615995005600050004x
发表时间：
1992-09
影响因子：
2.9
作者：
I. Nassar;R. Horton
通讯作者：
I. Nassar;R. Horton
DOI：
10.1016/s0166-2481(08)x7009-6
发表时间：
1985
期刊：
--
影响因子：
--
作者：
G. Campbell
通讯作者：
G. Campbell