Seasonal thawing of palsas in Finnish Lapland

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Entry ID

GGD314

Summary

This study investigates the thickness of the active layer of palsas in northernmost Finland and temporal, local, and regional differences in the thawing of palsas there. (Seppala 1983). Probes of frost depth were made over a 9-year period, a total of 185 measurements in 17 palsa bogs at sites ranging from 50 - 490 m in altitude. Thermal gradients were also measured ; weather observations were taken at two sites.

Temporal Coverage

Start Date: 1972-01-01
Stop Date: 1982-12-31

Location Keywords

• CONTINENT EUROPE NORTHERN EUROPE SCANDANAVIA FINLAND FINNISH LAPLAND

Science Keywords

• Atmosphere Atmospheric Pressure Surface Pressure
• Atmosphere Atmospheric Radiation Outgoing Longwave Radiation
• Atmosphere Atmospheric Radiation Solar Radiation
• Atmosphere Atmospheric Temperature Air Temperature
• Atmosphere Atmospheric Temperature Surface Air Temperature
• Atmosphere Atmospheric Water Vapor Humidity
• Atmosphere Atmospheric Winds Surface Winds
• Land Surface Soils Soil Temperature

Ancillary Keywords

• Active Layer
• Peat
• Seasonal Freeze/thaw
• Thermal Properties

Data Center

NSIDC Frozen Ground Data Center
Data Center URL: http://nsidc.org/fgdc/

Data Center Personnel

Name: NSIDC FGDC User Services
Phone: 1 303 492-6199
Fax: 1 303 492-2468
Email: nsidc@nsidc.org
Contact Address:

• National Snow and Ice Data Center
• CIRES, 449 UCB
• University of Colorado

City: Boulder
Province or State: CO
Postal Code: 80309-0449
Country: USA

Personnel

Matti Seppala
Role: INVESTIGATOR
Email: matti.seppala@helsinki.fi
Contact Address:

• University of Helsinki
• Department of Geography
• Hallituskatu 11

City: Helsinki
Postal Code: SF-00100
Country: Finland

Maria Ronkko
Role: TECHNICAL CONTACT
Phone: 358 9 191 51060
Fax: 358 9 191 50 760
Email: maria.ronkko@helsinki.fi
Contact Address:

• University of Helsinki
• Laboratory of Physical Geography
• P.O. Box 64

City: Helsinki
Postal Code: 00014
Country: Finland

Reference

Seppala, M. 1983. Seasonal thawing of palsas in Finnish Lapland. International Permafrost Conference, 4th. Proceedings, p. 1127-1132.

Metadata Name and Version

Metadata Name: CEOS IDN DIF
Metadata Version: 9.7

Creation and Review Dates

DIF Creation Date: 2003-05-12
Last DIF Revision Date: 2005-01-24

DIF Text-Only

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DIF XML

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FGDC HTML

U.S. Federal Geographic Data Committee (FGDC) Content Standard for Digital Geospatial Metadata (CSDGM)

ISO HTML

International Organization for Standardization (ISO) 19115:2003 Geographic Information Metadata