Nalaikh M2a depression (north slope)

General Information

Created: 2014-02-13 11:34:03
Modified: 2014-02-17 08:44:18

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 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.

Buyantukhaa station, near Ulaanbaatar airport is located at N47°51' E 106°46' at 1267 m a.s.l. and at a distance of 40 km from the boreholes to the North-west.

Depth:100 m
Drilling Angle:90 °
Diameter:13 cm
Deepest Sensor:50 m
Drilling Method:fluid drilling
Date Drilled:01. Jan 1992
Type:road (bus or train), 40 km from Ulaanbaatar
Type:natural: collapse from hole wall at a depth of 2.5 to 4 m
Distance From Heat:0 m
Other Disturbance:anthropogenic: 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 slope of a small hill in the depression
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Bibliographic References

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Longitude:107.25 °
Latitude:47.75444444 °
Elevation:1508.57250977 m
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