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This data set contains 76 active-layer depth measurements (cm) of the Vaisjeäggi palsa bog, Finland, from 08 September 1993 to 14 October 2002. Data were collected from a single location at 69°49'16.6" N, 27°10'17.1" E. Data also contain snow depth (cm) when snow cover was present. Data are in tab-delimited ASCII text format, and are available via ftp.
Rönkkö, Maria. 2003. Active-Layer Depth of a Finnish Palsa Bog. Boulder, CO: National Snow and Ice Data Center. Digital Media.
|Data format||Data are in tab-delimited ASCII text format.|
|Spatial coverage||Data were collected from a single location at 69°49'16.6" N, 27°10'17.1" E|
|Temporal coverage||Rönkkö collected measurements once each year during 1993, 1994, 1995, and 1998. Coverage then extends from June to November 2001, and from March to Oct 2002.|
|File naming convention||ggd622_vaisjeaggi_ald.txt|
|File size||The file "ggd622_vaisjeaggi_ald.txt" is 2 KB.|
|Parameter(s)||This data set contains active-layer depth at a palsa bog.|
|Procedures for obtaining data||Data are available via FTP.|
Laboratory of Physical Geography, P.O. Box 64
University of Helsinki 00014
NSIDC User Services
National Snow and Ice Data Center
CIRES, 449 UCB
University of Colorado
Boulder, CO 80309-0449 USA
phone: +1 303.492.6199
fax: +1 303.492.2468
form: Contact NSIDC User Services
Data are in tab-delimeted ASCII text format.
The file "ggd622_vaisjeaggi_ald.txt" is 2 KB.
Samples were collected at Vaisjeäggi palsa bog in Finland, 300 m above sea level, at 69°49'16.6" N, 27°10'17.1" E. Soil consisted primarily of peat.
Rönkkö collected measurements once each year during 1993, 1994, 1995, and 1998. Coverage then extends from June to November 2001, and from March to Oct 2002. Dates are given in year.day.month format.
Active-layer depth at a palsa bog, using a 1-m metal rod that was pushed vertically to the peat until resistance was met. Active-layer depth values range from 5 cm to 67 cm. Snow depth was measured when snow cover was present.
Palsa is a peaty permafrost mound possessing a core of alternating layers of segregated ice and peat or mineral soil material. They are typically between 1 m and 7 m in height and a few metres to 100 m in diameter. Most, but not all, palsas occur in the discontinuous permafrost zone. See the Frozen Ground Glossary for more information.