BOREHOLE METADATA FORM (09/2006)

 

BOREHOLE NAME Nome Charter School

 

COUNTRY USA

 

LATITUDE AND LONGITUDE  (degrees, minutes)

N 64 32 34.9 W165 24 45.6

 

BOREHOLE DEPTH (m) AND MEASUREMENT INTERVAL IF DIFFERENT FROM DEPTH Borehole information

Shrub site: contain old beach gravel reworked by first generation gold rush (ca. 100 years ago). Active layer was around 1m. 1Ócasing was installed 1.2m deep and four thermistors were connected microdatalogger (Sensor depth: +1m Air temp, -0.02m, 0.2m, 1.2m).

Grass (open) site: 1.5 m

Grass site: contain old beach gravel reworked by first generation gold rush (ca. 100 years ago). About 25m west of Shrub site. Active layer was around 1.3m. 1Ócasing was installed 1.5m deep and four thermistors were connected microdatalogger (Sensor depth: +1m Air temp, -0.02m, 0.5m, 1.5m).

 

 

YEAR DRILLED September 16, 2005

 

METHOD OF DRILLING 2Óforced air drill with gas power head/ jack hammer

 

DURATION OF DRILLING (hours/days) 2 day

 

TYPE OF 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.)

first generation gold rush (ca. 100 years ago) gravel pit

 

PERIOD OF PRIOR MEASUREMENTS AND FREQUENCY (starting date; annually, monthly, weekly, or daily etc.) Starting in 2005 (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.) 4 Cable with one logger each site (two sites)

1Ó dry PVC tube

 

PERMAFROST ZONE          Continuous [X]                       Discontinuous [  ]       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    -2 ¡C

 

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

10m?  (not zero amp.)

 

 

 

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

 

 

ELEVATION (above sea level , m) ca. 30 m

 

SITE SLOPE (angle, aspect)   level location

 

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

Local relief (m)

paleo beach line

 

LANDFORM OR GEOMORPHOLOGICAL DESCRIPTION AND HISTORY  OF SITE (age)

none glaciated beach ridge, ice cemented gravel

 

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

 

 

DOMINANT SITE VEGETATION 

[ ] Polar desert []Tundra  [x ] Shrub Tundra [  ] Forest Tundra  [ ]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.) road

Distance from road access (km) 0.01 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

Nome

 

OTHER COMMENTS: (use additional space)