Cold Regions Engineering: Climatic Warming Concerns for Alaska

Esch, D C; Osterkamp, T. E.

doi:10.1061/(asce)0887-381x(1990)4:1(6)

Cited by 43 publications

(13 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Based on their review of climatological data, Esch and Osterkamp (1990) have suggested that the average air temperature at these latitudes can be expected to increase about 1°C/decade. As shown in Fig. 14, if the average annual air temperature was to increase by 2"C, the maximum depth of annual thaw would increase from about 1 to 1.3 m. Calculations were also carried out to determine the effect which failure of one or more thermosyphons would have on the operation of the system.…”

Section: Results Of Analysesmentioning

confidence: 98%

Thermal analysis of forced-air and thermosyphon cooling systems for the Inuvik airport expansion

Smith¹,

Graham²,

Nixon³

et al. 1991

Can. Geotech. J.

View full text Add to dashboard Cite

This paper presents a description of thermal analyses of forced-air ventilation and thermosyphon cooling systems, which were carried out in connection with the design of the concrete raft foundations that support hangars and other major structures to be constructed by the Department of National Defence adjacent to the existing airport near Inuvik, N.W.T. The cooling systems are required to prevent heat from the buildings from thawing the ice-rich permafrost present below the site. The analyses identified those parameters that have the most significant effect on the efficiency of each system. Based partially on the results of the analyses, it was decided to utilize air ventilation for cooling. The system is expected to perform satisfactorily under natural convection; however, the design includes a provision to install air blowers, if this should prove necessary in the future. A number of areas in which further,zesearch appears useful have been identified.Cet article prCsente une description des analyses thermiques des systkmes de ventilation d'air force et de thermosyphons qui ont CtC rCalisCes en relation avec la conception de fondations de radiers de bCton supportant des hangars et autres structures majeures qui doivent hre construites par le DCpartement de la DCfense Nationale, a cBtC de 17aCroport d71nuvik, T.N.-0. Les systkmes de refroidissernent sont nkcessaires pour empCcher la chaleur des bltiments de faire fondre le pergCliso1 riche en glace sous le site. Les analyses ont identifie ceux parmi les paramktres qui ont l'effet le plus significatif sur I'efficacitC de chaque systkme. En se basant partiellement sur les rCsultats des analyses, l'on a dCcidC d'utiliser la ventilation d'air pour le refroidissement. L'on s'attend a ce que la performance du systkme soit satisfaisante dans des conditions de convexion naturelle; cependant, la conception offre la possibilitC d'installer des ventilateurs s'ils devenaient nCcessaires dans le futur. Un certain nombre de domaines dans lesquels de la recherche semblerait utile ont Ct C identifies.

show abstract

Section: Results Of Analysesmentioning

confidence: 98%

Thermal analysis of forced-air and thermosyphon cooling systems for the Inuvik airport expansion

Smith¹,

Graham²,

Nixon³

et al. 1991

Can. Geotech. J.

View full text Add to dashboard Cite

show abstract

“…During the interactive processes between the permafrost environment and permafrost engineering, the thermal regimes of foundation soils are easily affected by engineering activities and/or climate changes (Esch and OsterKamp, 1990;Fortier et al, 2011;Harris et al, 2009;Mu et al, 2012;Smith and Riseborough, 2010;Wu et al, 2002). The thermal impacts either from engineering activities or climate changes can cause various complications for permafrost engineering stability (Instanes et al, 2005;Ma et al, 2009;Nelson et al, 2002;Wu and Niu, 2014).…”

Section: Introductionmentioning

confidence: 97%

Analysis of tower foundation stability along the Qinghai–Tibet Power Transmission Line and impact of the route on the permafrost

Zhang²,

Wang

et al. 2016

Cold Regions Science and Technology

View full text Add to dashboard Cite

“…Accurate simulation of the thermal regime in frozen soil models plays an important role in the prediction of global climate changes [ Ling and Zhang , 2004], and temperature variation can affect the performance of structures constructed in cold regions [ Esch and Osterkamp , 1990; Lunardini , 1996]. A frozen soil model with realistic simulation of soil temperature, liquid water content, and ice content also improved the climate model's ability to simulate greenhouse gas exchange processes in cold regions [ Mikan et al , 2002].…”

Section: Introductionmentioning

confidence: 99%

Analyses and development of a hierarchy of frozen soil models for cold region study

Li¹,

Sun²,

Xue³

2010

J. Geophys. Res.

View full text Add to dashboard Cite

[1] Numerous frozen soil models currently in use differ in the complexity of their governing equations or/and in the processes being considered. It is important to comprehensively examine and categorize these on the basis of physical principles, assumptions, and relationship to each other. In this paper frozen soil models are classified into different levels according to the complexity of the governing equations. On the basis of scale analysis, models with different levels of complexity were derived from the most complicated frozen soil model. Rationales for the simplification of models at different levels are discussed. To overcome the difficulties in achieving numerical solutions, a new method of substituting soil enthalpy and total water mass for soil temperature and volumetric liquid water content in governing equations is introduced for each level of the frozen soil models. Models with different complexity levels are assessed with observational data. The preliminary monthly and seasonal evaluation shows that the results from the models with different complexity are generally similar but with substantial differences at the Tibetan D66 site during the melting and freezing period. The model including the contribution of vapor flux due to the matric potential gradient to the water balance performs the best at the D66 site. Compared to the corresponding original models, the frozen soil model versions with enthalpy and total water mass for governing equations appear to produce consistently better performance. Furthermore, the rationale of different methods for the freezing-melting process in frozen soil is discussed. It has been noted that the model derived from the freezing point depression equation and the soil matric potential equation is supported by both thermodynamic equilibrium theory and the simulation results.Citation: Li, Q., S. Sun, and Y. Xue (2010), Analyses and development of a hierarchy of frozen soil models for cold region study,

show abstract

Cold Regions Engineering: Climatic Warming Concerns for Alaska

Cited by 43 publications

References 3 publications

Thermal analysis of forced-air and thermosyphon cooling systems for the Inuvik airport expansion

Thermal analysis of forced-air and thermosyphon cooling systems for the Inuvik airport expansion

Analysis of tower foundation stability along the Qinghai–Tibet Power Transmission Line and impact of the route on the permafrost

Analyses and development of a hierarchy of frozen soil models for cold region study

Contact Info

Product

Resources

About