An Excel™ spreadsheet program for reconstructing the surface profile of former mountain glaciers and ice caps

被引：149

作者：

Benn, Douglas I. ^{[1
,2
]}

Hulton, Nicholas R. J. ^{[3
]}

机构：

[1] Univ Ctr Svalbard, N-9171 Longyearbyen, Norway

[2] Univ St Andrews, Sch Geog & Geosci, St Andrews KY16 9AL, Fife, Scotland

[3] Univ Edinburgh, Sch Geosci, Edinburgh EH9 3JW, Midlothian, Scotland

来源：

COMPUTERS & GEOSCIENCES | 2010年 / 36卷 / 05期

关键词：

Glacier reconstruction; Ice sheet surface; Shape factor; EQUILIBRIUM-LINE ALTITUDES; BALANCE; CLIMATE; NORWAY;

D O I：

10.1016/j.cageo.2009.09.016

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

A new Excel (TM) spreadsheet program is introduced, which calculates the surface profiles of former glaciers using an exact solution of a 'perfectly plastic' glacier model. Two versions of the model are presented. The basic model requires only bed topography along a flowline and a yield stress for ice as inputs. The latter can be tuned using 'target ice elevations' derived from geomorphological mapping. A more sophisticated form of the model allows the yield stress to vary along the flowline, and incorporates the effect of valley-side drag on the glacier profile. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：605 / 610

页数：6

共 14 条

[1]

[Anonymous], 1994, The Physics of Glaciers

[2]

[Anonymous], 2005, Principles of glacier mechanics

[3]

[Anonymous], 1999, FUNDAMENTALS GLACIER

[4] Palaeoclimatic reconstruction from loch Lomond Readvance glaciers in the West Drumochter Hills, Scotland [J].

Benn, DI ;

Ballantyne, CK .

JOURNAL OF QUATERNARY SCIENCE, 2005, 20 (06) :577-592

[5] Reconstruction of equilibrium-line altitudes for tropical and sub-tropical glaciers [J].

Benn, DI ;

Owen, LA ;

Osmaston, HA ;

Seltzer, GO ;

Porter, SC ;

Mark, B .

QUATERNARY INTERNATIONAL, 2005, 138 :8-21

[6] A new approach to calculating Holocene winter precipitation by combining glacier equilibrium-line altitudes and pine-tree limits: A case study from Hardangerjokulen, central southern Norway [J].

Dahl, SO ;

Nesje, A .

HOLOCENE, 1996, 6 (04) :381-398

[7]

Nesje A., 2003, GLOBAL CHANGE HOLOCE, P264

[8]

Nesje A., 2001, GLACIERS ENV CHANGE

[9]

Nye J.F., 1952, J GLACIOL, V2, P82, DOI 10.3189/s0022143000033967

[10] Estimates of glacier equilibrium line altitudes by the Area x Altitude, the Area x Altitude Balance Ratio and the Area x Altitude Balance Index methods and their validation [J].

Osmaston, H .

QUATERNARY INTERNATIONAL, 2005, 138 :22-31

← 1 2 →