|
CALM SITE U8 |
FRANKLIN BLUFF |
|
Site code |
U8 |
|
Site name |
Franklin
Bluff |
|
CAPS I Metadata form |
GGD401 |
|
CAPS II Metadata form |
GGD313U_8 |
|
Responsible for data submission |
Vladimir
Romanovsky |
|
Email Address |
ffver”-at-“uaf.edu |
|
Institution/Organization |
University
of Alaska-Fairbanks |
|
Location description |
Arctic Alaska |
|
Location Lat. |
69 deg. 41 min. N |
|
Location Lon. |
148 deg. 43 min. W |
|
Elevation avg. (m) |
88 |
|
Methods Grid |
100 |
|
Methods Other |
Air Temperature, Soil temperature, Soil Moisture |
|
Landscape Description |
Inner
coastal plain, river terraces |
|
Vegetation /Classification |
Graminoid-moss tundra and graminoid,
prostrate-dwarf-shrub, moss tundra (wet and moist nonacidic) |
|
Soils (or Material) |
Ruptic-Histic Aquorthel |
|
Thaw depth measurements (year started)
|
1996 |
|
Air temp. measurements (year started) |
1999 |
|
Snow cover measurements (year started) |
NA |
|
soil
temp. measurements (year started) |
1986 |
|
soil moisture measurements (year started) |
1999 |
|
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) |
the organic
layer thickness is 0.23 m |
DESCRIPTION OF AREA CONTAINING SITE:
Franklin Bluff grid is located on
the inner coastal plain wth river terraces. 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.): Ruptic-Histic Aquorthel
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
Additional
Climate data are also available at http://www.uaf.edu/water/projects/NorthSlope/coastal_plain/betty/betty.html
