|
CALM SITE U6 |
DEADHORSE |
|
Site code |
U6 |
|
Site name |
Deadhorse |
|
CAPS I Metadata form |
GGD401 |
|
CAPS II Metadata form |
GGD313U_6 |
|
Responsible for data submission |
Vladimir
Romanovsky |
|
Email Address |
ffver”-at-“uaf.edu |
|
Institution/Organization |
University of
Alaska-Fairbanks |
|
Location description |
Arctic Alaska |
|
Location Lat. |
70 deg. 10 min. N |
|
Location Lon. |
148 deg. 28 min. W |
|
Elevation avg. (m) |
17 |
|
Methods Grid |
100 |
|
Methods Other |
Air Temperature, Soil temperature, Soil Moisture |
|
Landscape Description |
Outer coastal plain, drained lake basins |
|
Vegetation /Classification |
Graminoid-moss tundra and graminoid,
prostrate-dwarf-shrub, moss tundra (wet and moist nonacidic) |
|
Soils (or Material) |
Terric
Aquiturbel |
|
Thaw depth measurements (year
started)
|
1996 |
|
Air temp. measurements (year
started) |
NA |
|
Snow cover measurements (year
started) |
NA |
|
soil
temp. measurements (year started) |
1996 |
|
soil moisture measurements
(year started) |
1998 |
|
general description of soil moisture
(dry, moist, wet, saturated) |
wet |
|
soil texture: if non organic
describe texture, if organic indicate thickness of organic layer (cm) |
Organic Layer thikness:15 (cm); mineral texture -- silty
loam /silt/peatty muck |
DESCRIPTION OF AREA CONTAINING
SITE:
Deadhorse
grid is located on the outer Arctic Coastal Plain with drained lake basins
nearby the Prudhoe Bay oil field. Landcover units include Graminoid-moss tundra and graminoid,
prostrate-dwarf-shrub, moss tundra
(wet and moist nonacidic).
SOIL DESCRIPTION:
(predominant texture, i.e., ‘sand’, ‘gravel’,
‘peat’, etc.): Typic Aquiturbels
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:
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
