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  • Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory  (6)
  • English  (6)
  • French
  • 2015-2019
  • 1970-1974  (6)
  • 1
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    Series available for loan
    Determination of cation exchange capacity of earth materials using a radiotracer technique (1970)
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-202-283
    In: Research report
    Description / Table of Contents: CONTENTS: Introduction. - Determination of CEC of earth materials using isotopic exchange. - Determination of CEC of earth materials using isotopic labeling. - Appendix: Procedure for determination of CEC of earth materials by isotopic labeling.
    Description / Table of Contents: Two radiochemical methods were investigated for determining the cation exchange capacity of earth materials having a wide range in physicochemical properties. The first method attempted was unsuccessful but involved determination of the radioactivity of a 22Na-NaOAc solution in isotopic equilibrium with a Na+-saturated mineral phase. The logic of this method is presented in order to illustrate principles of isotopic exchange in mineral systems. The method finally adopted is based upon determination of the radioactivity of a salt-free, Na+-saturated mineral sample prepared using a radioactive NaOAc solution with a known 22Na-NaOAc composition. This method is less time-consuming and more accurate than the conventional ammonium acetate method for cation exchange capacity determinations.
    Type of Medium: Series available for loan
    Pages: iii, 12 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 283
    URL: http://www.worldcat.org/oclc/5975372
    Language: English
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  • 2
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    Influence of soil on detection of buried explosives and tunnels by trace gas analysis (1971)
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-292-288
    In: Research report
    Description / Table of Contents: Contents: Preface. - List of symbols. - Introduction. - Adsorption of volatile chemicals by soil. - Introduction. - Experimental procedure. - Results and discussion. - Diffusion of volatile chemicals in soil. - Introduction. - Experimental procedure. - Calculations. - Results and discussion. - Prediction of vapor diffusion in soil. - Introduction. - Construction of model. - Computations. - Results and discussion. - A statistical method for analysis of diffusion through soil. - Introduction. - Theory. - Application. - Literature cited. - Abstract.
    Description / Table of Contents: Detection of mines, explosives, and tunnels may be accomplished by sensing associated volatile effluvia. This investigation was undertaken to provide a basis for predicting the diffusion of volatile compounds from underground sources into the atmosphere. Diffusion of a volatile compound was studied for a range of soil conditions utilizing soils from the mine detection sites in Puerto Rico. A new mathematical analysis based on the Monte Carlo method was developed for predicting vapor diffusion through soil into the atmosphere. It was determined that diffusion in soil can be reliably predicted if soil porosity, moisture content, and affinity for the compound are known. Appearance in the atmosphere is also dependent on accumulation of the compound in air at the soil/atmosphere interface. Diffusion of volatile compounds through soil into the atmosphere is not likely to be an important factor in tunnel detection due to depth of overburden. However, adsorption of compounds at tunnel walls is likely to significantly reduce the amount of vapor appearing in the atmosphere through entrances and vents. Detection in the atmosphere of TNT vapor from mines and explosives buried in moist, porous soil should be possible under ideal sample collection conditions.
    Type of Medium: Series available for loan
    Pages: v, 43 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 288
    URL: http://www.worldcat.org/oclc/227635497
    Language: English
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  • 3
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    Isua, Greenland : glaciological investigations during 1973 (1974)
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-202-318
    In: Research report
    Description / Table of Contents: CONTENTS: Introduction. - Drilling and field observations. - Interpretation. - Implications for the feasibility study. - Conclusions. - Literature cited. - Abstract.
    Description / Table of Contents: Two holes were drilled through the Greenland ice sheet during 1973 and temperature measurements were made in one hole drilled during 1972. These measurements show that the area of liquid water beneath the ice cap extends to ice depths as shallow as 100 m. The consequences of removing the frozen margin of glacial ice could be serious and more temperature measurements are needed to exactly locate the subglacial water. Petrographic studies of a few ice cores revealed a strongly oriented crystal fabric and an appreciable surface accumulation of superimposed ice.
    Type of Medium: Series available for loan
    Pages: iii, 15 Seiten , Illustrationen, Karten
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 318
    URL: http://www.worldcat.org/oclc/1035634454
    Language: English
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  • 4
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    Effects of stratigraphic layers on water flow through snow (1973)
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-202-311
    In: Research report
    Description / Table of Contents: CONTENTS: Preface. - Notation. - Introduction. - Review of observations. - Review of theory. - Water flow through textured layers. - Water flow past semipermeable layers. - Discussion. - Literature cited. - Abstract.
    Description / Table of Contents: The flow of water through layered snowpacks is discussed. A method for predicting flow through unsaturated layers is given. The flow along ice layers and through ice layers is analyzed in terms of the slope, permeability, thickness and length of the layers. It is shown that the permeability of ice layers required to cause large flow diversions is quite small. The effect of slope is large even at small angles.
    Type of Medium: Series available for loan
    Pages: v, 15 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 311
    URL: http://www.worldcat.org/oclc/1035634712
    Language: English
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  • 5
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    Summer temperatures in interior Alaska (1971)
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-202-244
    In: Research report
    Description / Table of Contents: CONTENTS: Introduction. - Summer temperature data. - Station network and history. - Parameters for data reduction. - Analysis of summer temperatures. - Temperature trends. - Summer temperatures in the highlands. - Lapse rates for summer temperatures. - Spatial variation of summer temperatures. - Summary. - Literature cited. - Appendix A. - Appendix B. - Appendix C. - Abstract.
    Description / Table of Contents: Annual degree-day summations over bases of 43°F and 50°F in 15-day periods from May through August are given for the period of record for five interior Alaska climatic stations. Average temperature and precipitation data are included. Patterns of summer temperature in interior Alaska are analyzed in terms of historical, elevational and areal differences. Since 1900, summer temperatures show little long-term change but significant short-term changes. In contrast, winter temperatures show considerable fluctuations, which are reflected in mean annual temperatures to a much greater degree than are summer temperature fluctuations. Average summer lapse rates for the 1600 to 3300 and 3300 to 6600-ft levels were 3.4 and 3.7°F/1000 ft, respectively, based on timberline temperature observations and on upper air data from Fairbanks. Correlation analysis of daily and monthly average July temperatures indicates areas of uniformity with respect to temperature variation. This provides information on lowland climatic stations that are representative of highland locations, especially the Yukon-Tanana Uplands
    Type of Medium: Series available for loan
    Pages: iv, 37 Seiten , Illustrationen, Karten
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 244
    URL: https://babel.hathitrust.org/cgi/pt?id=uc1.31210025591825&seq=3
    Language: English
    Location: AWI Archive
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  • 6
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    Isua, Greenland : calculations of glacier flow for an open-pit mine (1973)
    Hanover, NH : Corps of Engineers, U.S. Army Cold Regions Research and Engineering Laboratory
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    Call number: ZSP-202-309
    In: Research report
    Description / Table of Contents: CONTENTS: Preface. - Symbols. - Introduction. - Physical setting. - Flow model. - Calculated flow. - Existing profile. - Proposed profiles. - Profile 1. - Profile 2. - Profile 3. - Profile 4. - Profile 5. - Profile 6. - Profile 7. - Total excavation. - Interpretation and conclusions. - Sources of error. - Recommendations. - Literature cited. - Appendix A. - Abstract.
    Description / Table of Contents: The Marcona Corporation and Kryolitselskabet ?resund, A/S (a Danish corporation) are cooperatively investigating the possibility of developing an open-pit mine along the edge of the Greenland Ice Cap. The response of the glacier to a sudden change in surface slope and thickness is calculated. The existing flow is diverted away from the mineral deposit but will increase when the excavation begins. It is calculated that 66 million cubic meters of ice must be removed in order to establish a stable profile beyond the pit. An additional 7.9 million cubic meters of ice must be removed yearly in order to maintain the profile.
    Type of Medium: Series available for loan
    Pages: v, 25 Seiten , Illustrationen
    Series Statement: Research report / Cold Regions Research and Engineering Laboratory, CRREL, US Army Material Command 309
    URL: http://www.worldcat.org/oclc/5965695
    Language: English
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