CALM SITE R52

SEIDA

Site code

R52

Site name

Seida

CAPS I Metadata form

 

CAPS II Metadata form

 

Site Photograph

Data

Responsible for data submission

Dmitry Kaverin

Email Address

dkav”-at-“mail.ru

Institution/Organization

Institute of Biology, Komi Center RAS, Syktyvkar

Location description

European North of Russia

Location Lat.

67 03 56.0 N

Location Lon.

62 55 30.3 E

Elevation avg. (m)

100

Methods Grid

100

Methods Other

Air Temperature, Soil temperature, Frost heave and Thaw settlement

Landscape Description

peat plateau

Vegetation /Classification

southern shrub tundra

Soils (or Material)

Cryic Folic Histosols and Cryic Fbric Histosols

Thaw depth measurements (year started)               

2012

Air temp. measurements (year started)

2012

Snow cover measurements (year started)

2013

soil temp. measurements (year started)

2012

soil moisture measurements (year started)

2015

general description of soil moisture (dry, moist, wet, saturated)

Moist

soil texture: if non organic describe texture, if organic indicate thickness of organic layer (cm)

450

SITE DESCRIPTION

The grid is located 70 km southeast of the town of Vorkuta, 67 03 56,0 N, 62 55 30,3 E. Northeast European Russia. Komi Republic. The mean annual air temperature (MAAT) is -4,2ºC, the sum of positive air temperatures (Thawing Index) totals 1100 – 1300 ºC/day, mean annual precipitation is 600 mm. Permafrost is characterized by relatively high negative mean annual temperatures (MAST) -0 -2ºC, which results in its relative instability under climate change. Island permafrost subzone. The landscape of study site is a peat plateau, located in ancient lake bed complicated with thermokarst formations and alluvial terraces. The thickness of peat deposits varies up to several meters, peat layers are underlain by Pleistocene lacustrine loams. Study area is located on the boundary between southern shrub tundra and forest-tundra.

 

SOIL DESCRIPTION: (predominant texture, i.e., ‘sand’, ‘gravel’, ‘peat’, etc.): Cryic Folic Histosols and Cryic Fbric Histosols on deep peat deposits (up to 5 m)

 

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 sampling was conducted four times by manual probing at each stake. The four values for each sampling point are averaged, yielding a maximum of 121 data points per grid per probing date. Ground subsidence and/or heave are determined at Sayda for each grid node annually at the beginning and at the end of the warm season with the use of a 2H-10KL leveling instrument (Russia) providing for 4 mm accuracy.

 

 

REFERENCES:

D. A. Kaverin, A. V. Pastukhov, E. M. Lapteva, C. Biasi, M. Marushchak, and P. Martikainen. Morphology and Properties of the Soils of Permafrost Peatlands in the Southeast of the Bol’shezemel’skaya Tundra // Eurasian Soil Science, 2016, Vol. 49, No. 5, pp. 498–511.

DATA

 

 

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