Aeolian Processes in the Dry Valleys

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Identification_Information:

Citation:

Citation_Information:

Originator: Unknown

Publication_Date: Unknown

Title: Aeolian Processes in the Dry Valleys

Description:

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.

Purpose:

Not Available

Supplemental_Information:

REFERENCE: 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.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20020101

Ending_Date: 20030228

Currentness_Reference:Unknown

Status:

Progress: In Work

Maintenance_and_Update_Frequency: As needed

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: 162.32004

East_Bounding_Coordinate: 162.32004

North_Bounding_Coordinate: -77.36601

South_Bounding_Coordinate: -77.36601

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: 163.13045

East_Bounding_Coordinate: 163.13045

North_Bounding_Coordinate: -77.6042

South_Bounding_Coordinate: -77.6042

Spatial_Domain:

Description_of_Geographic_Extent:

Bounding_Coordinates:

West_Bounding_Coordinate: 162.00787

East_Bounding_Coordinate: 162.00787

North_Bounding_Coordinate: -77.5227

South_Bounding_Coordinate: -77.5227

Keywords:

Theme:

Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS

Theme_Keyword_Thesaurus: GCMD INSTRUMENT

Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS

Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > SEDIMENT TRANSPORT > SEDIMENT TRANSPORT RATES

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION > SEDIMENT TRANSPORT > SALTATION INTENSITY

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > EROSION/SEDIMENTATION

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > GEOMORPHOLOGY > EOLIAN LANDFORMS/PROCESSES

Theme_Keyword: EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > SURFACE ROUGHNESS

Theme_Keyword: EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC WINDS > BOUNDARY LAYER WINDS > WIND SPEED

Theme_Keyword: ANEMOMETERS

Theme_Keyword: SEDIMENT TRAPS

Theme_Keyword: SONIC ANEMOMETER

Theme_Keyword: TEMPERATURE SENSORS

Theme_Keyword: Saltation Intensity

Theme_Keyword: Surface Shear Stress

Theme_Keyword: Boundary Layer Wind Speeds

Theme_Keyword: Wind Force

Theme_Keyword: Sand Mass Transport Rates

Theme_Keyword: Nsf

Theme_Keyword: Opp-0088136

Theme_Keyword: Wind Shear Velocity

Theme_Keyword: Aerodynamic Roughness

Theme_Keyword: CLIMATOLOGY/METEOROLOGY/ATMOSPHERE

Theme_Keyword: ELEVATION

Theme_Keyword: ENVIRONMENT

Theme_Keyword: GEOSCIENTIFIC INFORMATION

Place:

Place_Keyword_Thesaurus: GCMD

Place_Keyword: CONTINENT > ANTARCTICA > MCMURDO DRY VALLEYS

Place_Keyword: GEOGRAPHIC REGION > POLAR

Access_Constraints: Not Available

Use_Constraints:

Not Available

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: NICHOLAS LANCASTER

Contact_Position: INVESTIGATOR

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Desert Research Institute

Address: 2215 Raggio Parkway

City: Reno

State_or_Province: NV

Postal_Code: 89512

Country: USA

Contact_Voice_Telephone: 775 673-7304

Contact_Electronic_Mail_Address: nick@dri.edu

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

Not Available

Logical_Consistency_Report:

Not Available

Completeness_Report:

Not Available

Lineage:

Process_Step:

Process_Description:

Not Available

Process_Date: Unknown

Spatial_Reference_Information:

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: DRI/DEES > Division of Earth and Ecoystem Sciences, Desert Research Institute

Contact_Person: NICHOLAS LANCASTER

Contact_Position: DATA CENTER CONTACT

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Desert Research Institute

Address: 2215 Raggio Parkway

City: Reno

State_or_Province: NV

Postal_Code: 89512

Country: USA

Contact_Voice_Telephone: 775 673-7304

Contact_Electronic_Mail_Address: nick@dri.edu

Resource_Description: Aeolian processes in the McMurdo Dry Valleys

Distribution_Liability:

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Digital_Form:

Digital_Transfer_Information:

Format_Name: Not Available

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name:

http://www.dees.dri.edu/

Access_Instructions:

DATA CENTER URL

Digital_Transfer_Option:

Fees: Not Available

Metadata_Reference_Information:

Metadata_Date: 20040723

Metadata_Review_Date: 20100702

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: GCMD User Support Office

Contact_Organization: NASA Global Change Master Directory

Contact_Address:

Address_Type: Mailing and Physical Address

Address: Not Available

City: Lanham

State_or_Province: MD

Postal_Code: 20706

Country: USA

Contact_Voice_Telephone: Not Available

Contact_Electronic_Mail_Address: gcmduso@gcmd.gsfc.nasa.gov

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time