Ocean modification and seasonality in a northern Ellesmere Island glacial fjord prior to ice shelf breakup: Milne Fiord

2021 ◽  
Author(s):  
Andrew K. Hamilton ◽  
Derek Mueller ◽  
Bernard E. Laval
Keyword(s):  
Ellesmere Island ◽  
Ice Shelf

scholarly journals Movement of the Ward Hunt Ice Shelf, Ellesmere Island, N.W.T., Canada

1971 ◽  
Vol 10 (59) ◽  
pp. 211-225 ◽  
Author(s):  
E. Dorrer
Keyword(s):  
Power Flow ◽  
Field Work ◽  
Ellesmere Island ◽  
Ice Shelf ◽  
Surface Layers ◽  
Atmospheric Refraction ◽  
Near Surface ◽  
Angle Measurements ◽  
Ice Velocity ◽  
Ice Forces

AbstractThe movement at a marginal location on the Ward Hunt Ice Shelf, northern Ellesmere Island, was determined by repeated survey measurements with theodolite and geodimeter. The purpose and duration of the field work, and reduction of the observational data are described, and the resulting mean ice velocity of 0.53 m year-1is discussed. Strain-rates of a 1 km by 1 km deformation figure are determined. The parametersnandBof Glen’s power flow law are determined by using the equations given by Nye and Weertman. The results are compared with experimental data. Computed ice stresses show that the “ridge-and-trough" structure on the ice shelf surface is not originated by internal ice forces. The elevations of all survey markers have been determined from vertical-angle measurements, and the peculiarities of atmospheric refraction in near-surface layers are discussed.

scholarly journals Volume and area changes of the Milne Ice Shelf, Ellesmere Island, Nunavut, Canada, since 1950

2012 ◽  
Vol 117 (F4) ◽  
pp. n/a-n/a ◽  
Author(s):  
Colleen A. Mortimer ◽  
Luke Copland ◽  
Derek R. Mueller
Keyword(s):  
Ellesmere Island ◽  
Ice Shelf

scholarly journals The Ward Hunt Ice Shelf: Recent Changes of the Ice Front

1963 ◽  
Vol 4 (34) ◽  
pp. 415-424 ◽  
Author(s):  
G. Hattersley-Smith
Keyword(s):  
Fracture Pattern ◽  
Ellesmere Island ◽  
Ice Shelf

Abstract Massive calving of the Ward Hunt Ice Shelf, northern Ellesmere Island, occurred between August 1961 and April 1962. An estimated 596 km.2 of ice shelf with a volume of 18 to 24 km.3 became detached to form ice islands, five of which are very large with areas ranging from 70 to 140 km.2. The fracture pattern and the subsequent drift of these ice islands are discussed.

scholarly journals Surface mass balance of the Ward Hunt Ice Rise and Ward Hunt Ice Shelf, Ellesmere Island, Nunavut, Canada

2004 ◽  
Vol 109 (D22) ◽  
pp. n/a-n/a ◽  
Author(s):  
Carsten Braun ◽  
Douglas R. Hardy ◽  
Raymond S. Bradley ◽  
Vicky Sahanatien
Keyword(s):  
Mass Balance ◽  
Ellesmere Island ◽  
Surface Mass Balance ◽  
Ice Shelf ◽  
Surface Mass

The source and calving of ice island ARLIS-II

Polar Record ◽  
1992 ◽  
Vol 28 (165) ◽  
pp. 137-144 ◽  
Author(s):  
Martin O. Jeffries
Keyword(s):  
Ellesmere Island ◽  
Aerial Photographs ◽  
Ice Shelf ◽  
Surficial Geology ◽  
Ellef Ringnes Island ◽  
Existing Data

AbstractOn the basis of existing data on the dimensions, shape, surficial geology, and glaciological structure of ice island ARLIS-II, used in combination with aerial photographs of northernmost Ellesmere Island taken in 1950 and 1959, the source of the ice island is positively identified as the Alfred Ernest Ice Shelf. The duration of the recent drift of ‘Hobson's Choice’ ice island from the vicinity of the Alfred Ernest Ice Shelf to northern Ellef Ringnes Island, used as a model for the duration of the drift of ARLIS-II between the same points, suggests ARLIS-II broke off the ice shelf in approximately 1955.

Recent Changes at the Front of Ward Hunt Ice Shelf, Ellesmere Island, N.W.T.

ARCTIC ◽  
1983 ◽  
Vol 36 (3) ◽  
Author(s):  
Martin O. Jeffries ◽  
Harold Serson
Keyword(s):  
Ellesmere Island ◽  
Ice Shelf

scholarly journals Growth and Grounding of the Ellesmere Island Ice Rises

1972 ◽  
Vol 11 (61) ◽  
pp. 43-52 ◽  
Author(s):  
John B. Lyons ◽  
R. H. Ragle ◽  
A. J. Tamburi
Keyword(s):  
Heat Conduction ◽  
Heat Flow ◽  
Ellesmere Island ◽  
Ice Shelf ◽  
Sea Floor ◽  
The Past ◽  
Conduction Theory

AbstractAnalysis of glaciologial data indicates that grounding of the Ward Hunt Ice Shelf and its conversion into an ice rise was primarily the result of local thickening of a floating ice shelf and the availability of a very gently sloping sea floor on which the ice shelf came to rest. Application of heat conduction theory to a series of thermal profiles through the Ward Hunt Ice Shelf, and the Ward Hunt, Camp Creek and Cape Discovery ice rises shows that present heat flow in this area of northern Ellesmere Island is more than twice normal, and that the outer and intermediate parts of the Ward Hunt ice rise grounded 250–350 years ago, during a cycle of climatic deterioration. Development and localization of ice rises along northern Ellesmere Island are strongly influenced by topography, and all ice rises we have studied seem to have formed within the past 1 600 years, possibly with major growth in the interval from 1 000 to 150 years ago.

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