High sensitivity of North Iceland (Tröllaskagi) debris-free glaciers to climatic change from the ‘Little Ice Age’ to the present
The Tröllaskagi peninsula is located in northern Iceland, between meridian 19°30′W and 18°10′W, jutting out into the North Atlantic to latitude 66°12′N. The aim of this research is to study recent glacier changes in relation to climatic evolution of the Gljúfurárjökull and Tungnahryggsjökull debris-...
Published in: | The Holocene |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
SAGE Publications
2017
|
Subjects: | |
Online Access: | http://dx.doi.org/10.1177/0959683616683262 http://journals.sagepub.com/doi/pdf/10.1177/0959683616683262 http://journals.sagepub.com/doi/full-xml/10.1177/0959683616683262 |
id |
crsagepubl:10.1177/0959683616683262 |
---|---|
record_format |
openpolar |
spelling |
crsagepubl:10.1177/0959683616683262 2024-04-07T07:52:38+00:00 High sensitivity of North Iceland (Tröllaskagi) debris-free glaciers to climatic change from the ‘Little Ice Age’ to the present Fernández-Fernández, José María Andrés, Nuria Sæmundsson, Þorsteinn Brynjólfsson, Skafti Palacios, David 2017 http://dx.doi.org/10.1177/0959683616683262 http://journals.sagepub.com/doi/pdf/10.1177/0959683616683262 http://journals.sagepub.com/doi/full-xml/10.1177/0959683616683262 en eng SAGE Publications http://journals.sagepub.com/page/policies/text-and-data-mining-license The Holocene volume 27, issue 8, page 1187-1200 ISSN 0959-6836 1477-0911 Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change journal-article 2017 crsagepubl https://doi.org/10.1177/0959683616683262 2024-03-08T03:19:12Z The Tröllaskagi peninsula is located in northern Iceland, between meridian 19°30′W and 18°10′W, jutting out into the North Atlantic to latitude 66°12′N. The aim of this research is to study recent glacier changes in relation to climatic evolution of the Gljúfurárjökull and Tungnahryggsjökull debris-free valley glaciers in Tröllaskagi. Glacier extent mapping and spatial analysis operations were performed with ArcGIS (ESRI), using analysis of aerial photographs from 1946, 1985, 1994 and 2000, and a 2005 SPOT satellite image. The results show that these glaciers lost a quarter of their surface area between the ‘Little Ice Age’ and 2005. In this paper, the term ‘Little Ice Age’ follows Grove (2001) as the most recent period when glaciers extended globally between the medieval period and the early 20th century. The abrupt climatic transition of the early 20th century and the 25-year warm period 1925–1950 triggered the main retreat and volume loss of these glaciers since the end of the ‘Little Ice Age’. Meanwhile, cooling during the 1960s, 1970s and 1980s altered the trend, with advances of the glacier snouts. Between the ‘Little Ice Age’ and the present day, the mean annual air temperature and mean ablation season air temperature increased by 1.9°C and 1.5°C, respectively, leading to a 40–50 m rise in the equilibrium line altitude (ELA) of the glaciers during this period. The response of these glaciers depends not only on the mean ablation season air temperature evolution but also on other factors such as winter precipitation. The models applied show a precipitation increase of up to more than 700 mm since the ‘Little Ice Age’. Article in Journal/Newspaper glacier Iceland North Atlantic SAGE Publications Ela ENVELOPE(9.642,9.642,63.170,63.170) Tungnahryggsjökull ENVELOPE(-18.839,-18.839,65.687,65.687) Gljúfurárjökull ENVELOPE(-18.667,-18.667,65.717,65.717) The Holocene 27 8 1187 1200 |
institution |
Open Polar |
collection |
SAGE Publications |
op_collection_id |
crsagepubl |
language |
English |
topic |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
spellingShingle |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change Fernández-Fernández, José María Andrés, Nuria Sæmundsson, Þorsteinn Brynjólfsson, Skafti Palacios, David High sensitivity of North Iceland (Tröllaskagi) debris-free glaciers to climatic change from the ‘Little Ice Age’ to the present |
topic_facet |
Paleontology Earth-Surface Processes Ecology Archeology Global and Planetary Change |
description |
The Tröllaskagi peninsula is located in northern Iceland, between meridian 19°30′W and 18°10′W, jutting out into the North Atlantic to latitude 66°12′N. The aim of this research is to study recent glacier changes in relation to climatic evolution of the Gljúfurárjökull and Tungnahryggsjökull debris-free valley glaciers in Tröllaskagi. Glacier extent mapping and spatial analysis operations were performed with ArcGIS (ESRI), using analysis of aerial photographs from 1946, 1985, 1994 and 2000, and a 2005 SPOT satellite image. The results show that these glaciers lost a quarter of their surface area between the ‘Little Ice Age’ and 2005. In this paper, the term ‘Little Ice Age’ follows Grove (2001) as the most recent period when glaciers extended globally between the medieval period and the early 20th century. The abrupt climatic transition of the early 20th century and the 25-year warm period 1925–1950 triggered the main retreat and volume loss of these glaciers since the end of the ‘Little Ice Age’. Meanwhile, cooling during the 1960s, 1970s and 1980s altered the trend, with advances of the glacier snouts. Between the ‘Little Ice Age’ and the present day, the mean annual air temperature and mean ablation season air temperature increased by 1.9°C and 1.5°C, respectively, leading to a 40–50 m rise in the equilibrium line altitude (ELA) of the glaciers during this period. The response of these glaciers depends not only on the mean ablation season air temperature evolution but also on other factors such as winter precipitation. The models applied show a precipitation increase of up to more than 700 mm since the ‘Little Ice Age’. |
format |
Article in Journal/Newspaper |
author |
Fernández-Fernández, José María Andrés, Nuria Sæmundsson, Þorsteinn Brynjólfsson, Skafti Palacios, David |
author_facet |
Fernández-Fernández, José María Andrés, Nuria Sæmundsson, Þorsteinn Brynjólfsson, Skafti Palacios, David |
author_sort |
Fernández-Fernández, José María |
title |
High sensitivity of North Iceland (Tröllaskagi) debris-free glaciers to climatic change from the ‘Little Ice Age’ to the present |
title_short |
High sensitivity of North Iceland (Tröllaskagi) debris-free glaciers to climatic change from the ‘Little Ice Age’ to the present |
title_full |
High sensitivity of North Iceland (Tröllaskagi) debris-free glaciers to climatic change from the ‘Little Ice Age’ to the present |
title_fullStr |
High sensitivity of North Iceland (Tröllaskagi) debris-free glaciers to climatic change from the ‘Little Ice Age’ to the present |
title_full_unstemmed |
High sensitivity of North Iceland (Tröllaskagi) debris-free glaciers to climatic change from the ‘Little Ice Age’ to the present |
title_sort |
high sensitivity of north iceland (tröllaskagi) debris-free glaciers to climatic change from the ‘little ice age’ to the present |
publisher |
SAGE Publications |
publishDate |
2017 |
url |
http://dx.doi.org/10.1177/0959683616683262 http://journals.sagepub.com/doi/pdf/10.1177/0959683616683262 http://journals.sagepub.com/doi/full-xml/10.1177/0959683616683262 |
long_lat |
ENVELOPE(9.642,9.642,63.170,63.170) ENVELOPE(-18.839,-18.839,65.687,65.687) ENVELOPE(-18.667,-18.667,65.717,65.717) |
geographic |
Ela Tungnahryggsjökull Gljúfurárjökull |
geographic_facet |
Ela Tungnahryggsjökull Gljúfurárjökull |
genre |
glacier Iceland North Atlantic |
genre_facet |
glacier Iceland North Atlantic |
op_source |
The Holocene volume 27, issue 8, page 1187-1200 ISSN 0959-6836 1477-0911 |
op_rights |
http://journals.sagepub.com/page/policies/text-and-data-mining-license |
op_doi |
https://doi.org/10.1177/0959683616683262 |
container_title |
The Holocene |
container_volume |
27 |
container_issue |
8 |
container_start_page |
1187 |
op_container_end_page |
1200 |
_version_ |
1795668048776003584 |