BOREHOLE METADATA FORM (10/2006)

 

BOREHOLE NAME Cruikshank School (Beaver)

 

COUNTRY USA

 

LATITUDE AND LONGITUDE  (degrees, minutes)

66¼21.709N - 147¼23.557W

 

BOREHOLE DEPTH (m) AND MEASUREMENT INTERVAL IF DIFFERENT FROM DEPTH 6m (AT, GT 0, 0.5, 1.5, 2.5, 3.5, 4.5, 5.5m)

 

YEAR DRILLED October 12, 2006

 

METHOD OF DRILLING 2ÓSS auger with gas power head

 

DURATION OF DRILLING (hours/days) 1 day

 

TYPE OF AND DISTANCE FROM HEAT SOURCES (surface disturbance, m)             

Natural [ ] no disturbance [ ] lake        [ ] river       [x] other natural disturbance (describe)

[ ] anthropogenic (describe type of disturbance; pipeline, storage area, reservoir, etc.)

about 150m from river terrace (cliff)

 

PERIOD OF PRIOR MEASUREMENTS AND FREQUENCY (starting date; annually, monthly, weekly, or daily etc.) Starting in 2006 (hourly by logger)

 

METHOD OF TEMPERATURE MEASUREMENT (thermistor probe, permanent cable [provide number of sensors and nominal depth], fluid filled hole and its level, diameter and type of casing , depth of casing, etc.) 8 Cable with two loggers

1Ó dry PVC tube

 

PERMAFROST ZONE          Continuous []              Discontinuous [ X ]    Sporadic [ ]

Isolated [ ]       Mountain [ ]

 

PERMAFROST         [x ] PRESENT                        [ ] ABSENT

  

PERMAFROST THICKNESS (if known, m)

 

MEAN ANNUAL GROUND TEMPERATURE AT OR NEAR DEPTH OF ZERO ANNUAL AMPLITUDE (¡C) – report  value for most recent year or 12 month interval    -1 ¡C

 

Depth of zero annual amplitude (or depth of measurement reported above)  (m)

3m  (not zero amp.)

 

 

 

Range (if applicable) of mean annual ground temperature over observation period (¡C)

 

 

ELEVATION (above sea level , m) ca. 105 m

 

SITE SLOPE (angle, aspect)   level location

 

SITE TOPOGRAPHY AND LOCAL RELIEF [ ]Valley  [ ]Top of hill or ridge  [ X ]Plain

Local relief (m)

 

LANDFORM OR GEOMORPHOLOGICAL DESCRIPTION AND HISTORY  OF SITE (age)

none glaciated fluvial plain: Yukon Flat

 

GEOLOGY (brief description of bedrock, sediments, including types and estimate of ice content volume [high, medium, low])

Organic layer was around 0.2m. Silt 0.2-6m

Sandy gravel most of surroundings

 

DOMINANT SITE VEGETATION 

[ ] Polar desert []Tundra  [] Shrub Tundra [ ] Forest Tundra  [X]Coniferous Forest 

[ ] Deciduous Forest [ ] Grassland [ ] Other (describe)

 

AIR TEMPERATURE AND SNOW COVER THICKNESS/DENSITY MEASUREMENTS AT THE BOREHOLE SITE (indicate frequency of observations):

Air temperature: Yes [x ] No [ ] hourly   Snow thickness: Yes[ ] No[x]  Density: Yes [ ] No[x ]

 

ACCESSIBILITY OF THE BOREHOLE    

Mode of transportation (helicopter, road, offroad vehicle, river, etc.) trail

Distance from road access (km) 0.02 km                  

 

NAME AND LOCATION OF CLOSEST CLIMATE STATION (latitude, longitude, and distance from borehole, km) – provide (if available) mean monthly air temperature and snow depth of reporting interval for mean annual ground temperature

Fairbanks

 

OTHER COMMENTS: (use additional space)