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The Eyjabakkajokull glacial landsystem, Iceland: Geomorphic impact of multiple surges

Schomacker, Anders; Benediktsson, Ivar Örn LU and Ingolfsson, Olafur (2014) In Geomorphology 218. p.98-107
Abstract
A new glacial geomorphological map of the Eyjabakkajokull forefield in Iceland is presented. The map covers c. 60 km(2) and is based on high-resolution aerial photographs recorded in August 2008 as well as field checking. Landforms are manually registered in a geographical information system (ArcGIS) based on inspection of orthorectified imagery and digital elevation models of the area. We mapped subglacially streamlined landforms such as flutes and drumlins on the till plain, supraglacial landforms such as ice-cored moraine, pitted outwash, and concertina eskers, and ice-marginal landforms such as the large, multi-crested 1890 surge end moraine and smaller single-crested end moraines. The glaciofluvial landforms are represented by outwash... (More)
A new glacial geomorphological map of the Eyjabakkajokull forefield in Iceland is presented. The map covers c. 60 km(2) and is based on high-resolution aerial photographs recorded in August 2008 as well as field checking. Landforms are manually registered in a geographical information system (ArcGIS) based on inspection of orthorectified imagery and digital elevation models of the area. We mapped subglacially streamlined landforms such as flutes and drumlins on the till plain, supraglacial landforms such as ice-cored moraine, pitted outwash, and concertina eskers, and ice-marginal landforms such as the large, multi-crested 1890 surge end moraine and smaller single-crested end moraines. The glaciofluvial landforms are represented by outwash plains, minor outwash fans, and sinuous eskers. Extramarginal sediments were also registered and consist mainly of old sediments in wetlands or locally weathered bedrock. Eyjabakkajokull has behaved as a surge-type glacier for 2200 years; hence, the mapped landforms originate from multiple surges. Landforms such as large glaciotectonic end moraines, hummocky moraine, long flutes, crevasse-fill ridges, and concertina eskers are characteristic for surge-type glaciers. The surging glacier landsystem of Eyjabakkajokull serves as a modern analog to the landsystems of terrestrial paleo-ice streams. (C) 2013 Elsevier B.V. All rights reserved. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Eyjabakkajokull, Iceland, Glacial geomorphology, Surge-type glacier, Aerial photographs, Landsystem
in
Geomorphology
volume
218
pages
98 - 107
publisher
Elsevier
external identifiers
  • wos:000338406600010
  • scopus:84893753049
ISSN
0169-555X
DOI
10.1016/j.geomorph.2013.07.005
language
English
LU publication?
yes
id
64dcff26-de28-4acd-b07f-aec437868ef8 (old id 4602603)
date added to LUP
2014-09-04 15:14:32
date last changed
2017-09-03 03:06:03
@article{64dcff26-de28-4acd-b07f-aec437868ef8,
  abstract     = {A new glacial geomorphological map of the Eyjabakkajokull forefield in Iceland is presented. The map covers c. 60 km(2) and is based on high-resolution aerial photographs recorded in August 2008 as well as field checking. Landforms are manually registered in a geographical information system (ArcGIS) based on inspection of orthorectified imagery and digital elevation models of the area. We mapped subglacially streamlined landforms such as flutes and drumlins on the till plain, supraglacial landforms such as ice-cored moraine, pitted outwash, and concertina eskers, and ice-marginal landforms such as the large, multi-crested 1890 surge end moraine and smaller single-crested end moraines. The glaciofluvial landforms are represented by outwash plains, minor outwash fans, and sinuous eskers. Extramarginal sediments were also registered and consist mainly of old sediments in wetlands or locally weathered bedrock. Eyjabakkajokull has behaved as a surge-type glacier for 2200 years; hence, the mapped landforms originate from multiple surges. Landforms such as large glaciotectonic end moraines, hummocky moraine, long flutes, crevasse-fill ridges, and concertina eskers are characteristic for surge-type glaciers. The surging glacier landsystem of Eyjabakkajokull serves as a modern analog to the landsystems of terrestrial paleo-ice streams. (C) 2013 Elsevier B.V. All rights reserved.},
  author       = {Schomacker, Anders and Benediktsson, Ivar Örn and Ingolfsson, Olafur},
  issn         = {0169-555X},
  keyword      = {Eyjabakkajokull,Iceland,Glacial geomorphology,Surge-type glacier,Aerial photographs,Landsystem},
  language     = {eng},
  pages        = {98--107},
  publisher    = {Elsevier},
  series       = {Geomorphology},
  title        = {The Eyjabakkajokull glacial landsystem, Iceland: Geomorphic impact of multiple surges},
  url          = {http://dx.doi.org/10.1016/j.geomorph.2013.07.005},
  volume       = {218},
  year         = {2014},
}