BOREHOLE METADATA FORM (09/2006)

 

BOREHOLENAME Kaltag School

 

COUNTRYUSA

 

LATITUDEAND LONGITUDE  (degrees, minutes)

N 64 59 34.9 W150 38 45.6

 

BOREHOLE DEPTH (m) ANDMEASUREMENT INTERVAL IF DIFFERENT FROM DEPTH Borehole information

contain old fire charcoal upper 0.5m. Active layerwas around 1m. 1Ócasing was installed 5 m deep and 6 thermistors were connected microdataloggers (Sensor depth: +1m Air temp, -0.02m, 0.5m, 1m, 2m, 3m, 4m, 5m).

 

 

 

YEARDRILLED March 9, 2007

 

METHODOF DRILLING 2Óforced air drill with gas power head

 

DURATIONOF DRILLING (hours/days) 1 day

 

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

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

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

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

1Ódry 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)Ð report  value for mostrecent year or 12 month interval    ¡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)

 

SITESLOPE (angle, aspect)   levellocation

 

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

Localrelief (m)

paleobeach line

 

LANDFORMOR GEOMORPHOLOGICAL DESCRIPTION AND HISTORY  OF SITE (age)

Fluvial silt/clay

 

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

 

 

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.) road

Distancefrom road access (km) 0.3 km            

 

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

Galena

 

OTHERCOMMENTS: (use additional space)

Snow depth 73cm in 2007