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Late Holocene and modern glacier changes in the marginal zone of Solheimajokull, South Iceland

Schomacker, Anders; Benediktsson, Ivar Örn LU ; Ingolfsson, Olafur; Friis, Bjarki; Korsgaard, Niels Jakup; Kjaer, Kurt H. and Keiding, Jakob Klove (2012) In Jökull: Journal of the Glaciological and Geological Societies of Iceland 62. p.111-130
Abstract
The forefield of the Solheimajokull outlet glacier, South Iceland, has a variety of glacial landforms and sediments that are products of late Holocene and modern glacier oscillations. Several sets of moraine ridges reflect past ice front positions and river-cut sedimentary sections provide information about past environments. Here, we describe sediments and landforms deposited during the late Holocene. Chronology is obtained by C-14 dating and cosmogenic exposure dating. The age determinations suggest that Solheimajokull had major advances in the late Holocene prior to the Little Ice Age, and more restricted advances during the Little Ice Age, after AD 1539. Oscillations of the Solheimajokull ice margin between 1938 and 2010 are documented... (More)
The forefield of the Solheimajokull outlet glacier, South Iceland, has a variety of glacial landforms and sediments that are products of late Holocene and modern glacier oscillations. Several sets of moraine ridges reflect past ice front positions and river-cut sedimentary sections provide information about past environments. Here, we describe sediments and landforms deposited during the late Holocene. Chronology is obtained by C-14 dating and cosmogenic exposure dating. The age determinations suggest that Solheimajokull had major advances in the late Holocene prior to the Little Ice Age, and more restricted advances during the Little Ice Age, after AD 1539. Oscillations of the Solheimajokull ice margin between 1938 and 2010 are documented by aerial photographs. Digital elevation models were produced from selected years in order to quantify ice thickness changes at the glacier margin over the last 50 years. The glacier margin thickened 70-100 m front 1960 to 1996 and then thinned 120-150 m between 1996 and 2010. In 2010, the glacier snout was 20-40 in thinner than in 1960. Additionally, the DEM time-series detect areas of erosion and deposition in the forefield. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Jökull: Journal of the Glaciological and Geological Societies of Iceland
volume
62
pages
111 - 130
publisher
Jöklarannsóknafélag Íslands
external identifiers
  • wos:000318580900009
ISSN
0449-0576
language
English
LU publication?
yes
id
69c76b62-9590-463d-88ea-31b04c88458c (old id 3935702)
date added to LUP
2013-07-15 10:15:32
date last changed
2016-04-15 21:50:18
@article{69c76b62-9590-463d-88ea-31b04c88458c,
  abstract     = {The forefield of the Solheimajokull outlet glacier, South Iceland, has a variety of glacial landforms and sediments that are products of late Holocene and modern glacier oscillations. Several sets of moraine ridges reflect past ice front positions and river-cut sedimentary sections provide information about past environments. Here, we describe sediments and landforms deposited during the late Holocene. Chronology is obtained by C-14 dating and cosmogenic exposure dating. The age determinations suggest that Solheimajokull had major advances in the late Holocene prior to the Little Ice Age, and more restricted advances during the Little Ice Age, after AD 1539. Oscillations of the Solheimajokull ice margin between 1938 and 2010 are documented by aerial photographs. Digital elevation models were produced from selected years in order to quantify ice thickness changes at the glacier margin over the last 50 years. The glacier margin thickened 70-100 m front 1960 to 1996 and then thinned 120-150 m between 1996 and 2010. In 2010, the glacier snout was 20-40 in thinner than in 1960. Additionally, the DEM time-series detect areas of erosion and deposition in the forefield.},
  author       = {Schomacker, Anders and Benediktsson, Ivar Örn and Ingolfsson, Olafur and Friis, Bjarki and Korsgaard, Niels Jakup and Kjaer, Kurt H. and Keiding, Jakob Klove},
  issn         = {0449-0576},
  language     = {eng},
  pages        = {111--130},
  publisher    = {Jöklarannsóknafélag Íslands},
  series       = {Jökull: Journal of the Glaciological and Geological Societies of Iceland},
  title        = {Late Holocene and modern glacier changes in the marginal zone of Solheimajokull, South Iceland},
  volume       = {62},
  year         = {2012},
}