Friday, July 3, 2009

I-Minus 2 Field Site

The I-Minus 2 is a gulley thermokarst feature. We began sampling and monitoring it in June 2009.

Active Layer/Permafrost Monitoring:
Lewkowicz, Gooseff, Crosby, and Godsey deployed 6 ground temperature monitoring stations and a met station from 23 Jun to 25 Jun. All sensors except soil moisture and some deep temperature installations are functional as of 01 Jul. All measurements are being recorded hourly.

Ground temperature monitoring stations are recording temperatures generally at 0, 20, 40, 60, 80, and 100 cm deep. If holes were drilled deeper than 1 m, we are also monitoring temperature at 120, 150, 200, 250, and 300 cm, depending on depth.
We are also monitoring soil moisture at 0, 20, and 40 cm deep at 3 stations, all of which are outside of the gulley.
The meteorological station is measuring:
- air temperature
- relative humidity
- solar radiation (short wave)
- wind speed & direction
- rainfall
- barometric pressure

Following up on discussions at the ARCSS/TK all scientists meeting, the following naming convention has been proposed:
IM2GT01.xx is the site code for the active gulley.
IM2GT01.yy is the site code for the very old feature near the stream to which the thermokarst water track is tributary. Here, we have installed 4 ground temperature monitoring stations, one of which is monitoring PAR also, and a set of frost tubes to monitor ground heave and settlement.

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