Entry_ID: NSIDC-0529
Entry_Title: Depths to Ice-cemented Soils in High-elevation Quartermain Mountains, Dry Valleys, Antarctica
Group: Data_Set_Citation
   Dataset_Creator: McKay, C. P. and M. M. Marinova. 
   Dataset_Title: Depths to Ice-cemented Soils in High-elevation Quartermain Mountains, Dry Valleys, Antarctica
   Dataset_Release_Date: 2013-03-18
   Dataset_Release_Place: Boulder, Colorado USA
   Dataset_Publisher: NSIDC: National Snow and Ice Data Center
   Online_Resource: http://nsidc.org/data/nsidc-0529.html
   Dataset DOI: http://dx.doi.org/10.7265/N5VX0DFJ
End_Group
Group: Personnel
   Role: Technical Contact
   First_Name: NSIDC
   Last_Name: User Services
   Email: nsidc@nsidc.org
   Phone: 1 303 492-6199 x
   Fax: 1 303  492-2468 x
   Group: Contact_Address
      Address: National Snow and Ice Data Center
      Address: CIRES, 449 UCB
      Address: University of Colorado
      City: Boulder
      Province_or_State: CO
      Postal_Code: 80309-0449
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Margarita
   Middle_Name: M.
   Last_Name: Marinova
   Email: margarita.m.marinova@gmail.com
   Phone:  650 861-2150 x
   Group: Contact_Address
      Address: NASA Ames Research Center
      Address: Space Sciences Division
      Address: Mail Stop 245-3
      City: Moffett Field
      Province_or_State: CA
      Postal_Code: 94035-1000
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Christopher 
   Middle_Name: P.
   Last_Name: McKay
   Email: chris.mckay@nasa.gov
   Phone: 1 650 604-6864 x
   Fax: 1 650  604-6779 x
   Group: Contact_Address
      Address: NASA Ames Research Center
      Address: Space Science Division
      Address: Mail Stop 245-3
      City: Moffett Field
      Province_or_State: CA
      Postal_Code: 94035
      Country: USA
   End_Group
End_Group
Group: Personnel
   Role: Investigator
   First_Name: Christopher 
   Middle_Name: P.
   Last_Name: McKay
   Email: chris.mckay@nasa.gov
   Phone: 1 650 604-6864 x
   Fax: 1 650  604-6779 x
   Group: Contact_Address
      Address: NASA Ames Research Center
      Address: Space Science Division
      Address: Mail Stop 245-3
      City: Moffett Field
      Province_or_State: CA
      Postal_Code: 94035
      Country: USA
   End_Group
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Cryosphere
   Term: Frozen Ground
   Variable_Level_1: Active Layer
End_Group
Group: Parameters
   Category: EARTH SCIENCE
   Topic: Land Surface
   Term: Frozen Ground
   Variable_Level_1: Active Layer
End_Group
ISO_Topic_Category: Climatology/Meteorology/Atmosphere
Keyword: active layer observations
Keyword: Active Layer Thickness
Keyword: depth to ice-cemented ground
Keyword: Dry Permafrost
Sensor_Name: CORING DEVICES
Source_Name: GROUND-BASED OBSERVATIONS
Group: Temporal_Coverage
   Start_Date: 2009-09-30
   Stop_Date: 2010-12-15
End_Group
Data_Set_Progress: complete
Group: Spatial_Coverage
   Southernmost_Latitude: -77.9
   Northernmost_Latitude: -77.833333
   Westernmost_Longitude: 160.666667
   Easternmost_Longitude: 160.816667
End_Group
Group: Location
   Location_Category: CONTINENT
   Location_Type: ANTARCTICA
End_Group
Project: NSF/OPP > Division of Polar Programs, Antarctic Research, Glaciology
Group: Quality

   The precision of measurement for all methods is a couple of centimeters due to 
   the need to drill into the ice and the difficulty of defining the reference 
   surface plane in environments with significant surface roughness. The measured 
   depth to ice-cemented ground is generally insensitive to the time of year 
   during which the measurement is taken since modeled ice evaporation rates, for 
   example seasonal depth of ice-cemented ground fluctuations, are 0.2 - 0.5 mm 
   per year (McKay et al. 1998); (Liu et al. 2011), and these changes are 
   significantly smaller than our measurement error. In measuring the depth to 
   ice-cemented ground, annual and seasonal temperature variations are important 
   only when the soil is water saturated to the surface. When a dry permafrost 
   layer is present, seasonal and yearly variations in temperature will only 
   affect the depth to the top of the dry permafrost layer but not the depth of 
   the ice-cemented layer.

End_Group
Data_Set_Language: English
Originating_Center: NASA/ARC/AE
Group: Data_Center
   Data_Center_Name: NSIDC > National Snow and Ice Data Center
   Data_Center_URL: http://nsidc.org
   Group: Personnel
      Role: Data Center Contact
      First_Name: NSIDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 
      Fax: 1 303  492-2468 
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Data_Center
   Data_Center_Name: AGDC > Antarctic Glaciological Data Center
   Data_Center_URL: http://nsidc.org/agdc/
   Group: Personnel
      Role: Data Center Contact
      First_Name: AGDC
      Last_Name: User Services
      Email: nsidc@nsidc.org
      Phone: 1 303 492-6199 x
      Fax: 1 303  492-2468 x
      Group: Contact_Address
         Address: National Snow and Ice Data Center
         Address: CIRES, 449 UCB
         Address: University of Colorado
         City: Boulder
         Province_or_State: CO
         Postal_Code: 80309-0449
         Country: USA
      End_Group
   End_Group
End_Group
Group: Distribution
   Distribution_Media: FTP
   Distribution_Size: 19 KB
   Distribution_Format: Comma-Separated Values (.csv)
End_Group
Group: Reference

   Bockheim J. G. 2007. Soil Processes and Development Rates in the Quartermain 
   Mountains, Upper Taylor Glacier Region. Antarctica. Geografiska Annaler, 89A, 
   153-165.

   Dickinson W. W. and K. Hopkins. 2005. Preliminary Report on Soil and 
   Permafrost Sampling: Beacon, Arena, and Pearse Valleys, Dry Valleys, 
   Antarctica, Nov.-Dec. 2001. Victoria University of Wellington, Antarctic Data 
   Series, No. 30, 41 pp.

   Marinova M. M., C. P. McKay, W. H. Pollard, J. L. Heldmann, A. F. Davila, D. 
   T. Andersen, W. A. Jackson, D. Lacelle, G. Paulson, K. Zacny, 2012. 
   Distribution of Depth to Ice-cemented Soils in the High-elevation Quartermain 
   Mountains, Dry Valleys of Antarctica. Antarctic Science.

   McKay C. P., M. T. Mellon and E. I. Friedmann. 1998. Soil Temperature and 
   Stability of Ice-cemented Ground in McMurdo Dry Valleys, Antarctica. Antarctic 
   Science, 10, 31-38.

   McKay C. P. 2009. Snow Recurrence Sets the Depth of Dry Permafrost at High 
   Elevations in the McMurdo Dry Valleys of Antarctica. Antarctic Science, 21, 
   89-94, doi:10.1017/S0954102008001508

End_Group
Group: Summary

   This data set is comprised of four surveyed valleys focusing on the depth to 
   ground ice in the high-elevation Quartermain Mountains in the Beacon Valley 
   area: University Valley, Farnell Valley, and two unnamed valleys north of 
   University Valley, which we will call Valley North and Valley 2 North. To date 
   it is only in the high-elevation Dry Valleys that the climatic conditions are 
   dry and cold enough that cryotic (always below 0°C) yet dry soil is found 
   over ice-cemented ground (McKay et al. 1998); (Bockheim 2007). The data 
   provide a qualitative and quantitative contribution towards understanding the 
   type and distribution of ground ice in the Quartermain Mountains at a high 
   spatial resolution. The measurements can be used to improve and validate 
   models of ice stability and distribution. This data set contains observations 
   of depth to ice-cemented ground, based on 475 measurements at 147 sites. Note 
   that the measurements represent the thickness of the active layer plus any dry 
   permafrost layer, which is ubiquitous in this region, and not just the 
   thickness of the active layer.

End_Group
Metadata_Name: CEOS IDN DIF
Metadata_Version: 9.7
DIF_Creation_Date: 2013-03-18
Last_DIF_Revision_Date: 2013-03-21
DIF_Revision_History: Updated parameters.