TITLE:    IvoThaw01
AUTHOR:  Larry Hinzman
                    University of Alaska, Fairbanks
                    Water and Environmental Research Center
                    Institute of Northern Engineering
                    441 Duckering Building
                    P.O.  Box 755860
                    Fairbanks, Alaska  99775-5860
                    Phone: (907) 474-7331 Fax: (907) 474-7041
                    Water and Environmental  Research Center website: 
http://www.uaf.edu/water/

FUNDING SOURCE AND GRANT NUMBER: U.S. National Science Foundation Arctic System 
Science Program grant number OPP-9818066

DATASET OVERVIEW: The Ivotuk study area is located on the North Slope of Alaska 
on the central southern coastal plains north of the Brooks Range (Lat.68 29 N, 
Lon. 155 44 W). The area became part of the Arctic Transitions in Land- 
Atmosphere System (ATLAS) in 1998. Thaw depth is measured over a one kilometer 
square grid. Data collection required approximately five hours on 9-22-2001.  
Additional site information is available at the ATLAS/Ivotuk website: 
http://www.uaf.edu/water/projects/atlas/atlas.html

INSTRUMENT DESCRIPTION:  Steel rod with length incremented in centimeters.

DATA COLLECTION AND PROCESSING: Data was collected by walking the grid and 
measuring the maximum depth to which the probe could be inserted, in accordance 
with the CALM protocol.  

DATA FORMAT: Excel file;Data was gathered at grid points only (100 meter 
increments); Thaw depth is recorded in centimeters.

REFERENCE: CALM (Circumpolar Active Layer Monitoring) website: 
http://www.geography.uc.edu/~kenhinkel/CALM/