CALM SITE U15 |
CHANDALAR SHELF |
Site code |
U15 |
Site name |
Chandalar
Shelf Grid |
CAPS I Metadata form |
GGD401 |
CAPS II Metadata form |
GGD313U_15 |
Responsible for data submission |
Vladimir
Romanovsky |
Email Address |
Ffver”-at-“uaf.edu |
Institution/Organization |
University
of Alaska-Fairbanks |
Location description |
Arctic Alaska |
Location Lat. |
68 deg. 04 min. N |
Location Lon. |
149 deg. 35 min. W |
Elevation avg. (m) |
976 |
Methods Grid |
30 |
Methods Other |
Air Temperature, Soil, Snow cover |
Landscape Description |
Glaciated
mountain terrace |
Vegetation /Classification |
Alpine
meadow with low shrubs |
Soils (or Material) |
Ruptic-Histic Aquiturbel |
Thaw depth measurements (year started) |
1996 |
Air temp. measurements (year started) |
1997 |
Snow cover measurements (year started) |
NA |
soil
temp. measurements (year started) |
1997 |
soil moisture measurements (year started) |
2000 |
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) |
Ruptic-Histic
Aquiturbel. Organic layer thickness is 27 cm |
DESCRIPTION
OF AREA CONTAINING SITE:
Broad
glaciated mountain valley. Landcover
units include Graminoid-moss tundra and graminoid, prostrate-dwarf-shrub, moss
tundra (wet and moist nonacidic). The site is located at the southern slope of
Brooks Range
SOIL
DESCRIPTION: (predominant texture, i.e.,
‘sand’, ‘gravel’, ‘peat’, etc.): Ruptic-Histic Aquiturbel. Organic
layer thickness is 27 cm
SAMPLING
DESIGN AND METHOD:
100-m
grid consists of a square array of surveyed permanent stakes separated by 10 m.
Sampling was conducted by manual probing at each stake. The active layer was
not measured at locations where grid points intersect rocks or large water
ponds.
REFERENCES:
Walker,
D. A., H. E. Epstein, W. A. Gould, A. Kade, A.M.
Kelley, J. A. Knudson, W. B. Krantz, R. A. Peterson,
G. Michaelson, R.A. Peterson, C. L. Ping, M. A. Raynolds, V. E. Romanovsky, Y. Shur,
and M.D. Walker, Frost-boil ecosystems: complex interactions between landforms,
soils, vegetation, and climate, Permafrost and Periglacial
Processes, 15: 171-188, 2004.
Sturm,
M., Schimel, J., Michelson, G., Welker, J., Oberbauer, S. F., Liston, G. E., Fahnestock,
J., and V. E. Romanovsky, Are winter biological processes important in
converting arctic tundra to shrubland?, BioScience, Vol. 55, No. 1: 17 26, 2005.
Shimel,
J. P., Fahnstock, J., Michaelson,
G. J., Mican, C., Ping, C., Romanovsky, V. E. and J.
Welker, A microbial activity based model of winter CO2 fluxes in Arctic tundra
communities, Arctic, Antarctic, and Alpine Research,Vol. 38, No. 2, 249-256, 2006.
Kade,
A., Romanovsky, V. E. and D. A. Walker, The N-factor
of nonsorted circles along a climate gradient in
Arctic Alaska, Permafrost and Periglacial Processes,
17: 279-289, 2006.
Nicolsky,
D. J., Romanovsky, V. E., Alexeev, V. A. and D. M. Lawrence,
Improved modeling of permafrost dynamics in Alaska with CLM3, Geophysical
Research Letters, VOL. 34, L08501, doi:10.1029/2007GL029525, 2007.
Nicolsky,
D. J., Romanovsky, V.E., and G. S.Tipenko, Using
in-situ temperature measurements to estimate saturated soil thermal properties
by solving a sequence of optimization problems, The Cryosphere,
1, 41 58, 2007.
Brown,
J. and V. E. Romanovsky, Report from the International Permafrost Association:
State of Permafrost in the First Decade of the 21st Century, Permafrost and Periglacial Processes, 19: 255 260, 2008.
Nicolsky,
D. J., Romanovsky, V.E., Tipenko,
G. S., and D. A. Walker, Modeling biogeophysical
interactions in non-sorted circles in the Low Arctic, Journal of Geophysical
Research, in press
Walker,
D.A., H.E. Epstein, V.E. Romanovsky, C.L. Ping, G.J. Michaelson, R.P. Daanen, Y. Shur, R.A. Peterson, W.B. Krantz,
M.K. Raynolds, W.A. Gould,
G.
Gonzalez, D.J. Nicolsky, C.M. Vonlanthen,
A.N. Kade, P. Kuss, A.M.
Kelley, C.A. Munger, C.T. Tarnocai,
N.V. Matveyeva, and F.J.A. DaniКls,
Arctic patterned-ground ecosystems: a synthesis of studies along a north
American arctic transect, Journal of Geophysical Research, in press
Nicolsky,
D. J., Tipenko, G. S., Romanovsky, V. E. and D. A.
Walker, Modeling Observed Differential Frost Heave within Non-Sorted Circles in
Alaska, In Proceedings of the Ninth International Conference on Permafrost,
June 29-July 3, Fairbanks, Alaska, 2008, in press
Romanovsky,
V. E., Marchenko, S. S., Daanen, R., Nicolsky, D. J., Sergeev, D. O.,
and D. A. Walker, Soil climate and frost heave along the Permafrost/Ecological
North American Arctic Transect, In Proceedings of the Ninth International
Conference on Permafrost, June 29-July 3, Fairbanks, Alaska, 2008, in press
Only
thaw depth data determined by mechanical probing is reported on CALM website.
For additional data refer to http://www.gi.alaska.edu/snowice/Permafrost-lab/index.html
or contact site investigators directly