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CALM SITE R40 |
IGARKA |
|
Site code |
R40 |
|
Site name |
Igarka |
|
CAPS I Metadata form |
|
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CAPS II Metadata form |
|
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Responsible for data submission |
Fedor Zepalov |
|
Email Address |
“kukareku85”-at-“mail.ru” |
|
Institution/Organization |
P.
I. Mel’nikov Permafrost Institute |
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Location description |
Enisey
North |
|
Location Lat. |
67
deg. 28 min. N |
|
Location Lon. |
86
deg. 26 min. E |
|
Elevation avg. (m) |
40 |
|
Methods Grid |
100 |
|
Methods Other |
|
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Landscape Description |
River terrace |
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Vegetation /Classification |
Southern tundra |
|
Soils (or Material) |
Loam |
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Thaw depth measurements (year
started)
|
2008 |
|
Air temp. measurements (year
started) |
|
|
Snow cover measurements (year
started) |
|
|
soil temp. measurements (year started) |
|
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soil moisture measurements (year
started) |
|
|
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 Igarka grid (R40)
is located (67o28’56” N, 86o26’08”
E) on the right bank of the Enisey River (Figure 1), 5 km north-west from
Igarka city, Krasnoyarsk Region. It is situated on the high riverine terrace with discontinuous permafrost. The
climate of the region is temperate continental with prolonged snowy winters
and short cool summers (Tushinskiy
& Davydova 1976). On average the period with negative mean daily air temperatures
extends to 250 days. Mean annual air temperature is -8,3°С. Mean air
temperature of the coldest month (January) is -27.6°С, of
the warmest month (July) is +15.4°C. Average annual wind speed is 4,0 m/s and
annual sum of precipitation is 340 mm/yr.
The climatological average maximum of snow-cover
thickness is 70-100 cm. Terrace surface around the site is frost-heave
affected peatbog with thermokarst lakes (up to 20 m in diameter). The grid surface
itself is partially covered with sparse birch forest, but is predominantly
tundra landscapes. Variety of tundra landscapes is represented by moss-vegetated
surfaces, elevated patterns with shrubs (Arctic birch) and overwetted thermokarst
depressions. 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.