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CALM SITE G2 |
ZACKENBERG ZEROCALM 2 |
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Site code |
G2 |
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Site name |
Zackenberg ZEROCALM 2 |
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CAPS I Metadata form |
GGD275 |
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CAPS II Metadata form |
GGD313_G2 |
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Responsible for data submission |
Magnus Lund |
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Email Address |
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Institution/Organization |
Aarhus University, Institute for Bioscience,
Denmark |
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Location description |
NE Greenland |
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Location Lat. |
74.4660 N |
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Location Lon. |
20.5643 W |
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Elevation avg. (m) |
16 |
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Methods Grid |
120x150 |
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Methods Other |
Ground temperature |
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Landscape Description |
Fluvial terraces on raised delta |
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Vegetation /Classification |
Cassiope upslope, Salix arctica snowbed, fen with mosses and Eriophorum
downslope |
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Soils (or Material) |
Typic Psammoturbels |
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Thaw depth measurements (year
started)
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1996 |
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Air temp. measurements (year
started) |
1995 |
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Snow cover measurements (year
started) |
1995 |
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soil temp. measurements (year started) |
1996 |
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soil moisture measurements (year
started) |
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general description of soil
moisture (dry, moist, wet, saturated) |
dry upslope, wet downslope |
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soil texture: if non organic
describe texture, if organic indicate thickness of
organic layer (cm) |
fine-grained, fluvial terraces |
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SITE
DESCRIPTION
This grid contains two fluvial bar deposits,
one at 22–20 m elevation, one at 10–12 m, with a 14o
south-facing slope between them. Mainly fine-grained sediments with some
cobbles and very few small boulders occur. The topographic difference between
the G1
and G2 sites allows a snowpatch to accumulate on the
slope in ZC2. This seasonal snowpatch is centered on
the south-facing slope, extending from the Cassiope
zone in the north to the moss zone in the south.
SAMPLING DESIGN AND METHOD:
The site covers 120 X
150 m, with 10m grid node spacing, providing 208 grid points. Thaw depth was
determined by mechanical probing. A 1-cm graduated steel rod was inserted into
the soil to the point of resistance to determine the depth of thaw. All
measurements were performed approximately 10 cm from the grid nodes with aspect
varying (N, S, E, W) every year.
REFERENCES:
Christiansen H.H. Meteorological Control on Interannual Spatial and Temporal Variations in Snow Cover
and Ground Thawing in Two Northeast Greenlandic
Circumpolar-Active-Layer-Monitoring (CALM) Sites. Permafrost
and Periglac. Process.
15: 155–169 (2004)
LINKS
Zackenberg
Research Station web page
