Now showing items 681-700 of 748

    • Strain Gradient Influence on Brittle Failure of Ice 

      Mohamed Sayed (American Society of Civil Engineers, 1990)
      Eccentric and concentric unconfined compression tests are conducted to examine the influence of strain gradients on the brittle failure of ice. Fresh‐water columnar‐grained ice specimens are tested at a temperature of
    • Activation Energy for Creep of Spray Ice 

      N. Chandler; D. Shields; L. Domaschuk (American Society of Civil Engineers, 1991)
      The activation energy must be known in order to relate creep rate to temperature according to the Arrhenius equation. In this note the activation energy for man-made spray ice is determined from primary and secondary ...
    • Behavior of Laboratory‐Made Spray Ice in Triaxial Compression Testing 

      A. Steel; P. J. Morin; J. I. Clark (American Society of Civil Engineers, 1990)
      The increasing use of spray ice in arctic offshore exploration and construction initiated a study that includes a series of triaxial compression tests on saline, laboratory‐made spray ice. Factors affecting spray‐ice ...
    • Extreme Ice Properties 

      Flemming Thunbo Christensen; Jesper Skourup (American Society of Civil Engineers, 1991)
      An extreme‐value analysis is carried out for ice properties in the Great Belt in Denmark. The Great Belt is an 18‐km‐wide body of water that connects the Baltic Sea with Kattegat and the North Sea. It divides the country ...
    • Reviewers of the <i>Journal of Cold Regions Engineering</i> 

      Unknown author (American Society of Civil Engineers, 1990)
    • Predicting Ice‐Structure Interactive Forces 

      J. C. Suman (American Society of Civil Engineers, 1991)
      Structural design of offshore structures in subfreezing temperatures is an engineering challenge. Design loads vary arbitrarily and are difficult to evaluate. One of the design loads is the live load imposed by drifting ...
    • Climatic Change and Permafrost: Record from Surficial Deposits 

      L. David Carter (American Society of Civil Engineers, 1990)
      The physical and chemical characteristics of surficial deposits and the floral and faunal remains they contain provide information that is useful for interpreting both paleoclimate and past permafrost conditions. Surficial ...
    • Low‐Temperature Performance of Elastomeric Bearings 

      Charles W. Roeder; John F. Stanton; Troy Feller (American Society of Civil Engineers, 1990)
      Elastomeric bearings are used in a wide range of structural applications. They support loads and accommodate movements by deformation of the elastomer. It is well known that elastomers may stiffen dramatically at very low ...
    • Greenhouse Warming: Consequences for Arctic Climate 

      David Etkin (American Society of Civil Engineers, 1990)
      Man is changing the chemical composition of the atmosphere. Over the past century, the increasing amounts of radiatively active gases (RAGs) emitted into the atmosphere have resulted in measurable and significant increases ...
    • Cold Regions Engineering: Climatic Warming Concerns for Alaska 

      David C. Esch; Thomas E. Osterkamp (American Society of Civil Engineers, 1990)
      Recent climatological data indicate that a climatic warming is in progress in Alaska, and global circulation climate models predict accelerated climatic warming as a result of global atmospheric changes. Permafrost temperature ...
    • Effect of Climatic Warming on Pile Creep in Permafrost 

      J. F. (Derick) Nixon (American Society of Civil Engineers, 1990)
      Climatic warming trends may induce long‐term warming trends in permafrost ground temperatures at depth. In warmer discontinuous permafrost, the effects of such warming trends on the integrity of foundations on permafrost ...
    • Effect of Global Warming on Arctic Coastal and Offshore Engineering 

      Ben C. Gerwick, Jr. (American Society of Civil Engineers, 1990)
      The current trend of global warming is expected to produce some of its most significant changes in Arctic ocean and coastal areas. As the average air and sea temperatures increase, sea level will rise and the polar ice ...
    • Effects of Elevated Temperatures and Rising Sea Level on Arctic Coast 

      Peter W. Barnes (American Society of Civil Engineers, 1990)
      Ice is a major agent on the inner shelf, gouging the bottom, increasing hydraulic scour, transporting sediment, and influencing river flood patterns. Rapid coastal retreat is common and low barrier islands and beaches are ...
    • Geosynthetic Reinforcement of Paved Road Embankments on Polygonal Ground 

      Tom Kinney; Billy Connor (American Society of Civil Engineers, 1990)
      Recently published research has proven the feasibility of the theory of using geosynthetic materials to reinforce unpaved roadways over thermokarst terrain that includes complete voids. The research developed the theory ...
    • The Kilpisjärvi Project: Case Study of Cold‐Regions Research in Finland 

      Terry McFadden (American Society of Civil Engineers, 1990)
      An experimental village at Kilpisjärvi in the northwest corner of Finland has been built to test state‐of‐the‐art materials and design techniques for cold regions construction. The Technical Research Center of Finland is ...
    • Potential Responses of Permafrost to Climatic Change 

      Michael Smith (American Society of Civil Engineers, 1990)
      The nature and magnitude of climatic changes associated with anticipated global warming are considered in terms of their implications for the permafrost regions. Extensive areas where permafrost is presently within a degree ...
    • Thermal Regime of Permafrost in Alaska and Predicted Global Warming 

      T. E. Osterkamp; A. H. Lachenbruch (American Society of Civil Engineers, 1990)
      The mean surface temperature of permafrost in Alaska has warmed locally as much as 4° C during the last century although some areas show little or no indication of a warming or cooling. There is evidence for a recent ...
    • Probabilistic Evaluation of Design Iceberg Collision 

      Kevin A. McTaggart; Michael Isaacson (American Society of Civil Engineers, 1990)
      A probabilistic model has been developed for the selection of a design iceberg collision with an offshore structure. The design event is selected on the basis of global sliding force, which is likely to determine whether ...
    • Cold Regions Engineering Research—Strategic Plan 

      Robert F. Carlson; John P. Zarling; Lewis E. Link (American Society of Civil Engineers, 1989)
      The Arctic and cold regions of the United States present many unique and difficult engineering problems that demand a coordinated fundamental research program. As a response to the Arctic Research and Policy Act, the ...