Aeolian Processes in the Dry Valleys
Entry ID: Aeolian_Processes_McMurdo

[ Update this Record ]

Summary
Abstract: This dataset contains data collected during studies of boundary layer winds and
surface characteristics. These field experiments were designed to:
1. Understand and quantify the partitioning of wind shear stress between
surface and roughness elements on (a) rocky surfaces and (b) surfaces with
scatted rocks and intervening sand surface.
2. Test the Raupach et al (1993) shear stress partitioning model to
estimate the entrainment threshold on surfaces covered with isolated roughness
elements
3. Quantify the spatial distribution of surface shear stress on surfaces
with scatted rocks and an intervening sand surface.
4. Understand relations between shear stress partitioning and transport of
sand.

The dataset includes measurements of:
- Boundary Layer winds and surface shear stress
- Wind speed at 6 heights above the surface (6.00 m, 3.65 m, 2.22 m, 1.35 m,
0.82 m, 0.50 m wind direction at 6 m and 0.82 m, temperature at 3.65 m.
- Surface shear stress using Irwin sensors (Wyatt and Nickling, 1997)
- Sand mass transport rates at the Victoria Valley site with static (Nickling
and McKenna Neuman, 1997) and automated sand traps.
Saltation intensity with Sensit sensor at the Victoria Valley site (Gillette
and Stockton, 1986)
- Wind force on simulated roughness elements using the Guelph force balance
(Gillies et al., 2000; Grant and Nickling, 1998; Wyatt and Nickling, 1997).

Data were sampled every 1 second and averaged for 1, 5, and 10 minute
intervals.

Derived data include estimates of wind shear velocity (u*), aerodynamic
roughness (zo)

Surface characterization data:
Information on rock cover and roughness element geometry, and sand grain size
and sorting parameters for surface sand and sand in transport in the Victoria
Valley is also available.

Datasets available:
Data were obtained for 2 sites located on the north side of Lake Fryxell and in
the Victoria Valley. There is also Irwin sensor calibration data for 2 sites:
Wright Valley and Victoria Lower Glacier, which includes wind profile and
temperature measurements.
Data cover the following periods:
- Wright Valley: January 11-14, 2002
- Lake Fryxell: January 15 - February 1, 2002; January 15 - February 3, 2003
- Victoria Lower Glacier: January 11-13, 2003
- Victoria Valley: January 15 - 31, 2003.

Site locations are:
- Lake Fryxell: 77 degrees 36.252 minutes; 163 degrees 07.827 minutes
- Wright Valley: 77 degrees 31.363 minutes; 162 degrees 00.472 minutes
- Victoria Valley: 77.366009935 degrees S, 162.320035048 degrees E

These studies were funded by NSF grant OPP-0088136

References cited

Gillette, D.A. and Stockton, P.H., 1986. Mass momentum and kinetic energy
fluxes of saltating particles. In: W.G. Nickling (Editor), Aeolian
Geomorphology. Allen and Unwin, Boston, London, Sydney, pp. 35-56.

Gillies, J.A., Lancaster, N., Nickling, W.G. and Crawley, D., 2000. Field
determination of drag forces and shear stress partitioning effects for a desert
shrub (Sarcobatus vermiculatus, Greasewood). Journal of Geophysical Research,
Atmospheres, 105(D20): 24871-24880.

Grant, P.F. and Nickling, W.G., 1998. Direct field measurement of wind drag on
vegetation for application to windbreak design and monitoring. Land Degradation
and Development, 9: 57-66.

Nickling, W.G. and McKenna Neuman, C., 1997. Wind tunnel evaluation of a
wedge-shaped aeolian sediment trap. Geomorphology, 18(3-4): 333-346. Wyatt,
V.E. and Nickling, W.G., 1997. Drag and shear stress partioning in sparse
desert creosote communities. Canadian Jornal of Earth Sciences, 34: 1486-1498.

Geographic Coverage
 N: -77.36601 S: -77.36601  E: 162.32004  W: 162.32004
 N: -77.6042 S: -77.6042  E: 163.13045  W: 163.13045
 N: -77.5227 S: -77.5227  E: 162.00787  W: 162.00787

Temporal Coverage
Start Date: 2002-01-01
Stop Date: 2003-02-28


Location Keywords
CONTINENT > ANTARCTICA > MCMURDO DRY VALLEYS
GEOGRAPHIC REGION > POLAR


Science Keywords
LAND SURFACE >EROSION/SEDIMENTATION >SEDIMENT TRANSPORT >SEDIMENT TRANSPORT RATES    [Definition]
LAND SURFACE >EROSION/SEDIMENTATION >SEDIMENT TRANSPORT >SALTATION INTENSITY    [Definition]
LAND SURFACE >EROSION/SEDIMENTATION    [Definition]
LAND SURFACE >GEOMORPHIC LANDFORMS/PROCESSES >AEOLIAN PROCESSES    [Definition]
LAND SURFACE >TOPOGRAPHY >SURFACE ROUGHNESS    [Definition]
ATMOSPHERE >ATMOSPHERIC WINDS >BOUNDARY LAYER WINDS >WIND SPEED    [Definition]


ISO Topic Category
CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
ELEVATION
ENVIRONMENT
GEOSCIENTIFIC INFORMATION


Instrument
ANEMOMETERS    [Information]
SEDIMENT TRAPS    [Information]
SONIC ANEMOMETER    [Information]
TEMPERATURE SENSORS    [Information]


Keywords
SALTATION INTENSITY
SURFACE SHEAR STRESS
BOUNDARY LAYER WIND SPEEDS
WIND FORCE
SAND MASS TRANSPORT RATES
NSF
OPP-0088136
WIND SHEAR VELOCITY
AERODYNAMIC ROUGHNESS


Data Set Progress
IN WORK


Data Center
Division of Earth and Ecoystem Sciences, Desert Research Institute    [Information]
Data Center URL: http://www.dees.dri.edu/
Dataset ID: Aeolian processes in the McMurdo Dry Valleys

Data Center Personnel
Name: NICHOLAS LANCASTER
Phone: 775 673-7304
Email: nick at dri.edu
Contact Address:
Desert Research Institute
2215 Raggio Parkway
City: Reno
Province or State: NV
Postal Code: 89512
Country: USA


Personnel
NICHOLAS LANCASTER
Role: INVESTIGATOR
Phone: 775 673-7304
Email: nick at dri.edu
Contact Address:
Desert Research Institute
2215 Raggio Parkway
City: Reno
Province or State: NV
Postal Code: 89512
Country: USA


Publications/References
Gillette, D.A. and Stockton, P.H., 1986. Mass momentum and kinetic energy
fluxes of saltating particles. In: W.G. Nickling (Editor), Aeolian
Geomorphology. Allen and Unwin, Boston, London, Sydney, pp. 35-56.

Gillies, J.A., Lancaster, N., Nickling, W.G. and Crawley, D., 2000. Field
determination of drag forces and shear stress partitioning effects for a desert
shrub (Sarcobatus vermiculatus, Greasewood). Journal of Geophysical Research,
Atmospheres, 105(D20): 24871-24880.

Grant, P.F. and Nickling, W.G., 1998. Direct field measurement of wind drag on
vegetation for application to windbreak design and monitoring. Land Degradation
and Development, 9: 57-66.

Nickling, W.G. and McKenna Neuman, C., 1997. Wind tunnel evaluation of a
wedge-shaped aeolian sediment trap. Geomorphology, 18(3-4): 333-346. Wyatt,
V.E. and Nickling, W.G., 1997. Drag and shear stress partioning in sparse
desert creosote communities. Canadian Jornal of Earth Sciences, 34: 1486-1498.

Creation and Review Dates
DIF Creation Date: 2004-07-23
Last DIF Revision Date: 2010-07-02

[ Update this Record ]


Link to Web Site