scholarly journals Frost boils and soil ice content: field observations

2006 ◽  
Vol 17 (4) ◽  
pp. 291-307 ◽  
Author(s):  
P. P. Overduin ◽  
D. L. Kane
Keyword(s):  
Field Observations ◽  
Ice Content ◽  
Soil Ice Content

scholarly journals A new thermo-time domain reflectometry approach to quantify soil ice content at temperatures near the freezing point

2020 ◽  
Vol 174 ◽  
pp. 103060 ◽  
Author(s):  
Yuki Kojima ◽  
Yuta Nakano ◽  
Chihiro Kato ◽  
Kosuke Noborio ◽  
Kohji Kamiya ◽  
...  
Keyword(s):  
Time Domain ◽  
Freezing Point ◽  
Time Domain Reflectometry ◽  
Ice Content ◽  
Soil Ice Content

An implicit Heat-Pulse-Probe method for measuring the soil ice content

2021 ◽  
pp. 117186
Author(s):  
Meng Wang ◽  
Xu Li ◽  
Xiangtian Xu
Keyword(s):  
Heat Pulse ◽  
Probe Method ◽  
Ice Content ◽  
Pulse Probe ◽  
Soil Ice Content

Reticulate Ice Veins in Permafrost, Northern Canada

1974 ◽  
Vol 11 (2) ◽  
pp. 230-237 ◽  
Author(s):  
J. Ross Mackay
Keyword(s):  
Three Dimensional ◽  
Drill Hole ◽  
Field Observations ◽  
Upward Migration ◽  
Northern Canada ◽  
Shrinkage Cracks ◽  
Thaw Consolidation ◽  
Ice Content ◽  
Glacial Tills ◽  
Marine Clays

A reticulate ice vein network is of common occurrence in many lake and marine clays, glacial tills, and mudflow deposits in permafrost areas of northern Canada. The ice vein network may grade downward into high ice content soils at depth. Field observations suggest that the reticulate ice veins grew in vertical and horizontal shrinkage cracks, with much of the water being derived from the adjacent clay, in a semiclosed freezing system, rather than from an upward migration of water in an open system. The three-dimensional geometry of the ice vein network is a factor to be considered in drill hole sampling, thaw–consolidation studies, and differential settlement estimates.

In situ measuring soil ice content with a combined use of dielectric tube sensor and neutron moisture meter in a common access tube

2013 ◽  
Vol 171-172 ◽  
pp. 249-255 ◽  
Author(s):  
Q. Cheng ◽  
Y. Sun ◽  
Y. Qin ◽  
X. Xue ◽  
X. Cai ◽  
...  
Keyword(s):  
Dielectric Tube ◽  
Combined Use ◽  
Moisture Meter ◽  
Neutron Moisture ◽  
Ice Content ◽  
Soil Ice Content

scholarly journals Soil ice content measurement using a heat pulse probe method

2011 ◽  
Vol 91 (2) ◽  
pp. 235-246 ◽  
Author(s):  
Gang Liu ◽  
Bing C. Si
Keyword(s):  
Line Source ◽  
Heat Pulse ◽  
Frozen Soil ◽  
Ice Melting ◽  
Finite Line ◽  
Ice Content ◽  
Finite Line Source ◽  
Heating Duration ◽  
Pulse Probe ◽  
Soil Ice Content

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 (θi) 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−1was 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 θivalues at temperature below −22°C and −18°C, respectively. However, above these temperatures, ice melting was significant and would lead to overestimation of θi. The higher the initial temperature, the larger the overestimation of θi.

scholarly journals Assimilation of Cosmic‐Ray Neutron Counts for the Estimation of Soil Ice Content on the Eastern Tibetan Plateau

2020 ◽  
Vol 125 (3) ◽  
Author(s):  
Samuel Mwangi ◽  
Yijian Zeng ◽  
Carsten Montzka ◽  
Lianyu Yu ◽  
Zhongbo Su
Keyword(s):  
Tibetan Plateau ◽  
Cosmic Ray ◽  
Eastern Tibetan Plateau ◽  
Ice Content ◽  
Soil Ice Content

On Methodology for Designing Architectural Lighting of Production Site Interior

2020 ◽  
pp. 10-21 ◽  
Author(s):  
Vladimir V. Voronov ◽  
Nikolay I. Shchepetkov
Keyword(s):  
Architectural Design ◽  
Comprehensive Approach ◽  
Scientific Methodology ◽  
Field Observations ◽  
Production Site ◽  
Artificial Illumination ◽  
Engineering Parameters ◽  
Architectural Lighting ◽  
Candidate Thesis

The article describes content of original and relevant but virtually forgotten thesis of V.V. Voronov on lighting of production site interiors by means of overhead natural (using three types of skylights) and artificial illumination, in order to elaborate scientific methodology for architectural design of more qualitative luminous environment on the basis of comprehensive approach and enhanced criteria framework of its evaluation using light engineering parameters. The thesis is unique in terms of the scope and quality of field and laboratory observations which are reflected not only in the text but also in the graphical attachments, namely photos, figures, schemes, drawings, charts, nomograms, and diagrams accompanied by specific measured or calculated parameters. The first part of the thesis contains theoretical basics and results of field observations conducted by different methods. This second part is the exposition of chapter 3 of the V.V. Voronov’s candidate thesis (1985). It describes the methodology for and the results of the experiments by means of planar and volumetric light simulation using the architectural lighting simulating assembly (chamber) which were conducted in MARKHI in 1970–1985.

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