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CALM SITE R32 |
TALNAKH |
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Site code |
R32 |
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Site name |
Talnakh |
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CAPS I Metadata form |
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CAPS II Metadata form |
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Site
Photograph (see
CALM-Talnakh.ppt) |
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Responsible for data submission |
Valery
Grebenets |
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Email Address |
vgreb”-at-“inbox.ru |
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Institution/Organization |
Moscow
State University, Moscow, Russia |
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Location description |
South of
Taimyr Peninsula |
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Location Lat. |
69 deg. 26 min.
N |
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Location Lon. |
88 deg. 28 min.
E |
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Elevation avg. (m) |
67 |
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Methods Grid |
100 |
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Methods Other |
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Landscape Description |
Fluvial
terrace |
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Vegetation /Classification |
Southern tundra |
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Soils (or Material) |
Loam |
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Thaw depth measurements (year started)
|
2005 |
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Air temp. measurements (year started) |
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Snow cover measurements (year started) |
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soil temp. measurements (year started) |
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soil moisture measurements (year started) |
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general description of soil moisture (dry, moist, wet,
saturated) |
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soil texture: if non organic describe texture, if organic
indicate thickness of organic layer (cm) |
Loam |
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SITE DESCRIPTION Talnakh grid (R32) is located (69o26’01”
N, 88o28’03” E) in the northern part of Eastern
Siberia on Taimyr Peninsula (Figure 1), at Noril-Rybnin interfluve, about 2.5
km south-east of the settlement of Talnakh (Norilsk Industrial Region).
Kharaelakh Ridge of Putorana Mountains lays 1.5 km north of the site. The
site is situated on a fluvial terrace, characterized by loamy soils and
underlined by low-temperature, continuous permafrost (Sheveleva &
Khomichvskaya 1967, Ershov 1991). The climate of the region is temperate
continental with prolong and snowy winters and short cool summers (Tushinskiy & Davydova 1976). On average the period with negative mean daily air temperatures
extends to 245 days. Mean annual air temperature is -9,8оС.
Mean air temperature of the coldest month (January)
is -27.6оС, of the warmest month (July) is
+13.4oC. Average annual wind
speed is 6.3 m/s and annual sum of precipitation is
340 mm/yr. The climatologically average maximum snow-cover thickness is 80
cm. The grid situated on
subhorizontal surface with elevation decreasing in south-east direction. The
small frost mound (pingo) 30 m in diameter and 1.5 m high occupies the
portion of the site. The frost mound is surrounded by flow depressions and
polygonized peatlands. The size of polygons varies between 6 to 8 m across.
Hummocks up to 20 cm height and hillocks up to 60-70 cm height are widely
present. Typical tundra vegetation occupies the site and consists of shrubs,
dwarf-shrub and sedges. Mosses and likens are largely absent from the site.
The environmental and geocryologic conditions of the site closely correspond
to those of the south-western part of Taimyr Peninsula. SOIL DESCRIPTION:
(predominant texture, i.e., ‘sand’, ‘gravel’,
‘peat’, etc.): Sediments primarily consist of loam with small
intrusions of pebbles and overplayed by a thin peat layer. |
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SAMPLING DESIGN AND METHOD:
1-ha grid consists of a square array
of surveyed permanent stakes separated by 10 m, yielding an 11 × 11 array
of sampling nodes on each grid. Thaw depth and snow sampling was conducted
twice by manual probing at each stake. The two values for each sampling point
are averaged, yielding a maximum of 121 data points per grid per probing date.
The active layer was not measured at locations where grid points intersect
rocks or deep water.
REFERENCES:
Zepalov, F.N., Grebenets, V.I.,
Streletskiy, D.A., Shiklomanov, N.I. 2008. Active-layer Monitoring at a New
CALM Site, Taimyr Peninsula, Russia. Proceedings of the 9th International
Conference on Permafrost, Fairbanks, Alaska, June 29 - July 3, 2008, Vol. 2,
2037-2042.
Site Photos (see
CALM-Talnakh.ppt)