Submitted on: 15 March 2016.
Revised on: 28 June 2016.
Accepted on: 14 August 2016.
___________________JOURNAL OF GLACIOLOGY---CAMBRIDGE UNIV PRESS
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Submitted on: 16 August 2020.
Revised on: 24 September 2020.
Accepted on: 22 October 2020.
___________________JOURNAL OF GLACIOLOGY---CAMBRIDGE UNIV PRESS
Submitted on: 26 May 2007.
Revised on: 28 August 2007.
Accepted on: 05 October 2007.
___________________JOURNAL OF GLACIOLOGY---CAMBRIDGE UNIV PRESS
Submitted on: 01 November 2005.
Revised on: 20 February 2006.
Accepted on: 21 March 2006.
___________________JOURNAL OF GLACIOLOGY---CAMBRIDGE UNIV PRESS