Nalaikh M2a depression (North slope)

General Information

Created: 2014-02-13 11:45:34
Modified: 2016-10-22 11:26:21

Active: No
Responsible Countries: Mongolia,
Timezone:UTC/GMT +08:00 hours
Vegetation Type:Grassland
Responsible Person:Natsagdorj Sharkhuu

​M2a is same borehole code for two boreholes! (MN 03 and MN 04)

Two boreholes at same site (old one and new one), 20 m inbetween.

MEAN ANNUAL GROUND TEMPERATURE AT OR NEAR DEPTH OF ZERO ANNUAL AMPLITUDE (°C) – report  value for most recent year or 12 month interval –0.68°C in 1993 and –0.62°C in 1999 at a depth of 10 m.

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. Buyantukhaa station, near Ulaanbaatar airport is located at N 47°51` E 106°46` and at 1267 m a.s.l. at a distance of 40 km from the boreholes to the North-west.

Depth:14 m
Drilling Angle:90 °
Diameter:13 cm
Deepest Sensor:10 m
Drilling Method:dry drilling
Date Drilled:01. Jan 1998
Type:road (bus or train), 40 km from Ulaanbaatar
Type:closed pit coal mine
Distance From Heat:2000 m
Slope:6 °
Aspect:0 °
Permafrost Thickness:33.5 m
Permafrost Zone:Isolated Patches
Vegetation:Grassland with steppe herds
Lithology:Strata in the borehole consists of lower Cretaceous interbedding sandstone, mudstone and gravelstone, which covered by 3.8 m thick loam and sand. Relative ice content of the weathered rocks ranges from 10 to 18%.
Morphology:On north facing gentle (6 degrees in an inclination) slope of small hill in the depression.
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Bibliographic References

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Longitude:107.15 °
Latitude:47.4516 °
Elevation:1549.19 m
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