BOREHOLE METADATA FORM (10/2006)

 

BOREHOLENAME Fort Yukon school

 

COUNTRY USA

 

LATITUDEAND LONGITUDE  (degrees, minutes)

N 66∫33.820   W 145∫15.303

 

BOREHOLEDEPTH (m) AND MEASUREMENT INTERVAL IF DIFFERENT FROM DEPTH 2.4m (AT, GT 0,0.5, 1, 2, 2.4m)

 

YEARDRILLED March 28, 2007

 

METHODOF DRILLING 2”SS auger with gas power head

 

DURATIONOF DRILLING (hours/days) 1 day

 

TYPEOF AND DISTANCE FROM HEAT SOURCES (surface disturbance, m)                   

Natural[ ] no disturbance [ ] lake           [ ] river       [x] othernatural disturbance (describe)

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

about 150m from road

 

PERIODOF PRIOR MEASUREMENTS AND FREQUENCY (starting date; annually, monthly, weekly,or daily etc.) Starting in 2007 (hourly by logger)

 

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

1”dry PVC tube

 

PERMAFROSTZONE            Continuous[]                 Discontinuous[ X ]        Sporadic [ ]

Isolated[ ]         Mountain[ ]

 

PERMAFROST           [x] PRESENT              [] ABSENT

  

PERMAFROSTTHICKNESS (if known, m)

 

MEANANNUAL GROUND TEMPERATURE AT OR NEAR DEPTH OF ZERO ANNUAL AMPLITUDE (°C)– report  value for mostrecent year or 12 month interval    -1 °C

 

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

 

 

 

 

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

 

 

ELEVATION(above sea level , m) ca. m

 

SITESLOPE (angle, aspect)   levellocation

 

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

Localrelief (m)

 

LANDFORMOR GEOMORPHOLOGICAL DESCRIPTION AND HISTORY  OF SITE (age)

none glaciated fluvial plain: Yukon Flat

 

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

Organic layer was around 0.2m. Silt 0.2-1.8m, gravel 1.8-2.4m

Sandygravel most of surroundings

 

DOMINANTSITE VEGETATION    

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

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

 

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

Airtemperature: Yes [x ] No [ ] hourly  Snow thickness: Yes[ ] No[x]  Density: Yes [ ] No[x ]

 

ACCESSIBILITYOF THE BOREHOLE        

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

Distancefrom road access (km) 0.02 km                      

 

NAMEAND LOCATION OF CLOSEST CLIMATE STATION (latitude, longitude, and distance fromborehole, km) – provide (if available) mean monthly air temperature andsnow depth of reporting interval for mean annual ground temperature

Fairbanks

 

OTHERCOMMENTS: (use additional space)