Blackstrap Lake Ice Cover Parking Lot: Ice Bridges of the James Bay Project: Salvage of Heavy Construction Equipment by a Floating Ice Bridge: Discussion

1975 ◽  
Vol 12 (3) ◽  
pp. 441-444 ◽  
Author(s):  
L. W. Gold
Keyword(s):  
Ice Cover ◽  
Construction Equipment ◽  
James Bay ◽  
Lake Ice ◽  
Parking Lot ◽  
Heavy Construction ◽  
Lake Ice Cover

Blackstrap Lake Ice Cover Parking Lot

1974 ◽  
Vol 11 (4) ◽  
pp. 490-508 ◽  
Author(s):  
W. A. Meneley
Keyword(s):  
Load Distribution ◽  
Dynamic Performance ◽  
Ice Cover ◽  
Sporting Events ◽  
Lake Ice ◽  
Design Load ◽  
Ice Surface ◽  
Parking Lot ◽  
Surface Deflection ◽  
Lake Ice Cover

During the Canada Winter Games (1971) more than 4000 cars were parked on the ice cover of Blackstrap Lake during the skiing events on Mount Blackstrap. The rapid increase in winter recreation activities will result in increased use of ice covers for sporting events and parking. Ice thickness and buoyancy measurements were made at regular intervals over the lot during the 3 weeks immediately prior to the Winter Games. Continuous recordings of the ice surface deflection were obtained in the critical loading area. Systematic loading trials of increased magnitude were carried out to measure the static and dynamic performance of the ice cover. During the Winter Games the design load distribution was adjusted daily so that it was equal of less than the observed buoyancy of the ice cover in the parking area. This load distribution was achieved by controlling the parking density. This criterion provides a conservative estimate of the allowable distributed load for loading periods of several hours duration.The procedures developed provide a reasonable guideline for the safe use of freshwater covers for similar events.

scholarly journals Calving Seasonality Associated With Melt‐Undercutting and Lake Ice Cover

2020 ◽  
Vol 47 (8) ◽  
Author(s):  
Joseph Mallalieu ◽  
Jonathan L. Carrivick ◽  
Duncan J. Quincey ◽  
Mark W. Smith
Keyword(s):  
Ice Cover ◽  
Lake Ice ◽  
Lake Ice Cover

Simulation of North American lake-ice cover characteristics under contemporary and future climate conditions

2011 ◽  
Vol 32 (5) ◽  
pp. 695-709 ◽  
Author(s):  
Yonas Dibike ◽  
Terry Prowse ◽  
Barrie Bonsal ◽  
Laurent de Rham ◽  
Tuomo Saloranta
Keyword(s):  
North American ◽  
Ice Cover ◽  
Future Climate ◽  
Lake Ice ◽  
Climate Conditions ◽  
Lake Ice Cover

scholarly journals Changes in Lake Ice Cover on the Morskie Oko Lake in Poland (1971-2007)

2013 ◽  
Vol 1 (2) ◽  
pp. 71-75
Author(s):  
Choiński Adam ◽  
Kolendowicz Leszek ◽  
Pociask-Karteczka Joanna ◽  
Sobkowiak Leszek
Keyword(s):  
Ice Cover ◽  
Lake Ice ◽  
Lake Ice Cover

scholarly journals Decay of a High Arctic lake-ice cover: observations and modelling

1994 ◽  
Vol 40 (135) ◽  
pp. 283-292 ◽  
Author(s):  
Richard Heron ◽  
Ming-Ko Woo
Keyword(s):  
Energy Balance ◽  
Ice Cover ◽  
High Arctic ◽  
Shortwave Radiation ◽  
Balance Model ◽  
Lake Ice ◽  
Ice Melt ◽  
Density Reduction ◽  
Ice Water ◽  
Lake Ice Cover

AbstractThe decay of a lake-ice cover in the Canadian High Arctic was studied for 2 years. Melt at the upper surface accounted for 75% of the decrease in ice thickness, while 25% occurred at the ice–water interface. An energy-balance model, incorporating density reduction due to internal ice melt, was used to simulate the decay of the ice cover. The overall performance of the model was satisfactory despite periods when computed results differed from the observed ice decay. Energy-balance calculations indicated that the absorption of shortwave radiation within the ice provided 52% of the melt energy while 33 and 15% came from the surface-energy balance and heat flux from the water.

scholarly journals Decay of a High Arctic lake-ice cover: observations and modelling

1994 ◽  
Vol 40 (135) ◽  
pp. 283-292 ◽  
Author(s):  
Richard Heron ◽  
Ming-Ko Woo
Keyword(s):  
Energy Balance ◽  
Ice Cover ◽  
High Arctic ◽  
Shortwave Radiation ◽  
Balance Model ◽  
Lake Ice ◽  
Ice Melt ◽  
Density Reduction ◽  
Ice Water ◽  
Lake Ice Cover

AbstractThe decay of a lake-ice cover in the Canadian High Arctic was studied for 2 years. Melt at the upper surface accounted for 75% of the decrease in ice thickness, while 25% occurred at the ice–water interface. An energy-balance model, incorporating density reduction due to internal ice melt, was used to simulate the decay of the ice cover. The overall performance of the model was satisfactory despite periods when computed results differed from the observed ice decay. Energy-balance calculations indicated that the absorption of shortwave radiation within the ice provided 52% of the melt energy while 33 and 15% came from the surface-energy balance and heat flux from the water.

Decadal Variability of Great Lakes Ice Cover in Response to AMO and PDO, 1963–2017

2018 ◽  
Vol 31 (18) ◽  
pp. 7249-7268 ◽  
Author(s):  
Jia Wang ◽  
James Kessler ◽  
Xuezhi Bai ◽  
Anne Clites ◽  
Brent Lofgren ◽  
...  
Keyword(s):  
Surface Temperature ◽  
Great Lakes ◽  
Regression Model ◽  
Decadal Variability ◽  
Ice Cover ◽  
Lake Surface ◽  
Lake Ice ◽  
Relationship Of ◽  
The Relationship ◽  
Lake Ice Cover

Abstract In this study, decadal variability of ice cover in the Great Lakes is investigated using historical airborne and satellite measurements from 1963 to 2017. It was found that Great Lakes ice cover has 1) a linear relationship with the Atlantic multidecadal oscillation (AMO), similar to the relationship of lake ice cover with the North Atlantic Oscillation (NAO), but with stronger impact than NAO; 2) a quadratic relationship with the Pacific decadal oscillation (PDO), which is similar to the relationship of lake ice cover to Niño-3.4, but with opposite curvature; and 3) decadal variability with a positive (warming) trend in AMO contributes to the decreasing trend in lake ice cover. Composite analyses show that during the positive (negative) phase of AMO, the Great Lakes experience a warm (cold) anomaly in surface air temperature (SAT) and lake surface temperature (LST), leading to less (more) ice cover. During the positive (negative) phase of PDO, the Great Lakes experience a cold (warm) anomaly in SAT and LST, leading to more (less) ice cover. Based on these statistical relationships, the original multiple variable regression model established using the indices of NAO and Niño-3.4 only was improved by adding both AMO and PDO, as well as their interference (interacting or competing) mechanism. With the AMO and PDO added, the correlation between the model and observation increases to 0.69, compared to 0.48 using NAO and Niño-3.4 only. When November lake surface temperature was further added to the regression model, the prediction skill of the coming winter ice cover increased even more.

Coherence between lake ice cover, local climate and teleconnections (Lake Mendota, Wisconsin)

2009 ◽  
Vol 374 (3-4) ◽  
pp. 282-293 ◽  
Author(s):  
Reza Namdar Ghanbari ◽  
Hector R. Bravo ◽  
John J. Magnuson ◽  
William G. Hyzer ◽  
Barbara J. Benson
Keyword(s):  
Ice Cover ◽  
Lake Ice ◽  
Local Climate ◽  
Lake Mendota ◽  
Lake Ice Cover
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