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West Dock 1ha

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General Information

Created: 2013-12-27 14:42:01
Modified: 2014-02-03 14:41:30

Active: Yes
Country:United States
Site:West Dock
CALM-Code:U4
Responsible Countries: United States,
Timezone:UTC/GMT -09:00 hours
Vegetation Type:Tundra
Responsible Person:Vladimir E. Romanovsky
Type:Grid
Nodes:121
Rows:11
Columns:11
Offset: m

DESCRIPTION OF AREA CONTAINING SITE:

West Dock grid is located on the outer Arctic Coastal Plain within the Prudhoe Bay oil field. The polygonized ‘‘uplands’’ and drained thaw-lake basins constitute the primary relief at these sites. Landcover units include Graminoid-moss  tundra (wet nonacidic). U4 1-ha grid is located within drained lake basin portion of the U5 (West Dock) 1 km grid.

 

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.

 

DATA

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/west_dock/west_dock.html

Aspect:193.6
Permafrost Zone:Continuous
Vegetation:Graminoid-moss tundra (wet nonacidic)
Landform:Outer coastal plain, drained lake basins
Lithology:Terric Hemistel, the organic layer thickness is 0.34 m
Description: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.
Access Timeseries
Bibliographic References
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.
http://dx.doi.org/10.1002/ppp.563
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.
http://dx.doi.org/10.1002/ppp.618
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
http://dx.doi.org/10.1029/2007jg000565
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.
http://dx.doi.org/10.1002/ppp.487
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.
http://dx.doi.org/10.1641/0006-3568(2005)055[0017:wbpchc]2.0.co;2
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.
http://dx.doi.org/10.1657/1523-0430(2006)38[249:cpocia]2.0.co;2
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.
http://dx.doi.org/10.1029/2007gl029525
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.
http://dx.doi.org/10.5194/tc-1-41-2007
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
http://dx.doi.org/10.1002/ppp.563
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,
http://dx.doi.org/10.1002/ppp.487
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
http://dx.doi.org/10.1029/2007jg000504
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
http://dx.doi.org/10.1029/2007jg000565

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U4 West Dock
Map

Longitude:-148.55 °
Latitude:70.366667 °
Elevation:4.336684 m
EPSG:4326
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