Document Type

Article

Publication Date

2015

Publication Title

Geografiska Annaler: Series A, Physical Geography

Volume

97

Abstract

Terminus geometry, ice margins, and surface elevations on Rabots glaciär were measured using differential GPS during summer 2011 and compared with those similarly measured in 2003. Glacier length over the eight years decreased by ∼105 m corresponding to 13 m a−1, a rate consistent with ice recession over the last several decades. Measured changes in surface elevations show that between 2003 and 2011 the glacier’s volume decreased by ∼27.6 ± 2.6 × 106 m3, or 3.5± 0.3 × 106 m3 a−1. This compares favorably with an estimate of −28.1 ± 2.6 × 106 m3 based on a mass-balance approach. The rate of volume loss appears, however, to have significantly increased after 2003, being substantially greater than rates determined for the intervals 1959–80, 1980–89, and 1989–2003. This increase corresponds to a sustained interval of more negative summer balances. Previous work suggests that as of 2003 Rabots glaciär had not yet completed its response to a ∼1°C warming that occurred c. 1900, and thus the current marked increase rate of ice loss might reflect the effect of recent, or accelerated regional warming that occurred during the last decade superimposed on its continued response to that earlier warming.

Issue

2

First Page

265

Last Page

278

DOI

10.1111/geoa.12062

Comments

This is the pre-peer reviewed version of the following article:

Brugger, K.A., and Pankratz L.,* 2015. Changes in the geometry and volume of Rabots glaciär, Sweden, 2003–2011: recent accelerated volume loss linked to more negative summer balances. Geografiska Annaler: Series A, Physical Geography, 97, 265-278. doi: 10.1111/geoa.12062

which has been published in final form at http://onlinelibrary.wiley.com/doi/10.1111/geoa.12062/abstract.

Rights

This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

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