Calving processes at a grounded ice cliff

Calving processes and the dynamics of calving glaciers

Calving of icebergs is an important component of mass loss from the polar ice sheets and glaciers in many parts of the world. Calving rates can increase dramatically in response to increases in velocity and/or retreat of the glaciermargin, with important implications for sea level change. Despite their importance, calving and related dynamic processes are poorly represented in the current gener...

Systems Analysis of complex glaciological processes and application to calving of Amery Ice Shelf, East Antarctica

Calving is a complex process subject to several cooperating atmospheric, oceanographic and glaciological forcings that vary in space and time, and whose relative effects are challenging to separate. Statistical ‘Systems Analysis’ is commonly used in engineering and economics to extricate complex ‘force–response’ relationships. Here we apply Systems Analysis to the Amery rift system, East Antarc...

The Cliff at the Border

Potential Antarctic Ice Sheet retreat driven by hydrofracturing and ice cliff failure

a r t i c l e i n f o a b s t r a c t Keywords: ice sheet Antarctica sea level subglacial basin ice cliff hydrofracture Geological data indicate that global mean sea level has fluctuated on 10 3 to 10 6 yr time scales during the last ∼25 million years, at times reaching 20 m or more above modern. If correct, this implies substantial variations in the size of the East Antarctic Ice Sheet (EAIS)....

Calving day and age at first calving in Angus heifers.

Because of difficulties in data collection and analysis, in most breeds there have been limited ways to evaluate fertility in females on a between-herd basis. The objective of this study was to determine the heritabilities (direct and maternal) for CD (calving day) and AFC (age at first calving) in American Angus heifers and to evaluate the potential for using these traits in genetic improvemen...