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Past and present permafrost temperatures in the Abisko area: redrilling of boreholes.

Johansson, Margareta LU ; Åkerman, Jonas LU ; Keuper, Frida ; Christensen, Torben LU ; Lantuit, Hugues and Callaghan, Terry (2011) In Ambio: a Journal of Human Environment 40(6). p.558-565
Abstract
Monitoring of permafrost has been ongoing since 1978 in the Abisko area, northernmost Sweden, when measurements of active layer thickness started. In 1980, boreholes were drilled in three mires in the area to record permafrost temperatures. Recordings were made twice per year, and the last data were obtained in 2002. During the International Polar Year (2007-2008), new boreholes were drilled within the 'Back to the Future' (BTF) and 'Thermal State of Permafrost' (TSP) projects that enabled year-round temperature monitoring. Mean annual ground temperatures (MAGT) in the mires are close to 0 degrees C, ranging from -0.16 to -0.47 degrees C at 5 m depth. Data from the boreholes show increasing ground temperatures in the upper and lower part... (More)
Monitoring of permafrost has been ongoing since 1978 in the Abisko area, northernmost Sweden, when measurements of active layer thickness started. In 1980, boreholes were drilled in three mires in the area to record permafrost temperatures. Recordings were made twice per year, and the last data were obtained in 2002. During the International Polar Year (2007-2008), new boreholes were drilled within the 'Back to the Future' (BTF) and 'Thermal State of Permafrost' (TSP) projects that enabled year-round temperature monitoring. Mean annual ground temperatures (MAGT) in the mires are close to 0 degrees C, ranging from -0.16 to -0.47 degrees C at 5 m depth. Data from the boreholes show increasing ground temperatures in the upper and lower part by 0.4 to 1 degree C between 1980 and 2002. At one mire, permafrost thickness has decreased from 15 m in 1980 to ca. 9 m in 2009, with an accelerating thawing trend during the last decade. (Less)
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author
; ; ; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Ground temperatures, Boreholes, Permafrost, Abisko, Sub-arctic Sweden
in
Ambio: a Journal of Human Environment
volume
40
issue
6
pages
558 - 565
publisher
Springer
external identifiers
  • wos:000298500000002
  • pmid:21954719
  • scopus:80052530222
ISSN
0044-7447
DOI
10.1007/s13280-011-0163-3
language
English
LU publication?
yes
id
326341e2-be42-4308-9cc4-51b3baa9f9c2 (old id 2201093)
date added to LUP
2016-04-01 13:25:43
date last changed
2021-08-18 02:05:41
@article{326341e2-be42-4308-9cc4-51b3baa9f9c2,
  abstract     = {Monitoring of permafrost has been ongoing since 1978 in the Abisko area, northernmost Sweden, when measurements of active layer thickness started. In 1980, boreholes were drilled in three mires in the area to record permafrost temperatures. Recordings were made twice per year, and the last data were obtained in 2002. During the International Polar Year (2007-2008), new boreholes were drilled within the 'Back to the Future' (BTF) and 'Thermal State of Permafrost' (TSP) projects that enabled year-round temperature monitoring. Mean annual ground temperatures (MAGT) in the mires are close to 0 degrees C, ranging from -0.16 to -0.47 degrees C at 5 m depth. Data from the boreholes show increasing ground temperatures in the upper and lower part by 0.4 to 1 degree C between 1980 and 2002. At one mire, permafrost thickness has decreased from 15 m in 1980 to ca. 9 m in 2009, with an accelerating thawing trend during the last decade.},
  author       = {Johansson, Margareta and Åkerman, Jonas and Keuper, Frida and Christensen, Torben and Lantuit, Hugues and Callaghan, Terry},
  issn         = {0044-7447},
  language     = {eng},
  number       = {6},
  pages        = {558--565},
  publisher    = {Springer},
  series       = {Ambio: a Journal of Human Environment},
  title        = {Past and present permafrost temperatures in the Abisko area: redrilling of boreholes.},
  url          = {http://dx.doi.org/10.1007/s13280-011-0163-3},
  doi          = {10.1007/s13280-011-0163-3},
  volume       = {40},
  year         = {2011},
}