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Data Set ID:
NSIDC-0087

Dominion Range Snow Pit and Ice Core, 1984 and 1985, Version 1

Information from snow pits and an ice core were collected at Dominion Range (location - 166 10' East, 85 15' South, elevation - 2,700m) in 1984-1985. The 6 meter snow pit was dug and sampled in 1984-1985 with a 3 cm sampling interval. Four 1 meter snow pits were dug and sampled in 1984-1985 with a 3 cm sampling interval. One core was drilled during the austral summer 1984-1985 with a depth of 160 meters.

Chemistry and density data were collected from the 1 meter pits. Chemistry, beta profile and density data were collected from the 6 meter snow pits. Chemistry (Na NH4, K, Mg, Ca, Cl, NO3, SO4, MSA), particles and a lead-210 profile were collected from the ice core.

Geographic Coverage

Parameter(s):
  • Ice Core Records > Lead-210 Profile
  • Ice Core Records > Ions > Major Ion Chemistry
  • Ice Core Records > Particulate Matter
  • Snow/Ice > Snow/Ice Chemistry
  • Snow/Ice > Snow Pit Major Ion Chemistry
Spatial Coverage:
  • N: -85, S: -85, E: 166, W: 166

Spatial Resolution: Not Specified
Temporal Coverage:
  • 1 November 1984 to 31 January 1985
Temporal Resolution: Not specified
Data Format(s):
  • ASCII Text
Platform(s) GROUND-BASED OBSERVATIONS
Sensor(s): CORING DEVICES
Version: V1
Data Contributor(s): Sallie Whitlow, Paul Mayewski
Data Citation

As a condition of using these data, you must cite the use of this data set using the following citation. For more information, see our Use and Copyright Web page.

Sallie Whitlow and Paul Mayewski 1999. Dominion Range Snow Pit and Ice Core, 1984 and 1985, Version 1. [Indicate subset used]. Boulder, Colorado USA. NSIDC: National Snow and Ice Data Center. doi: http://dx.doi.org/10.7265/N5PC308D. [Date Accessed].

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Detailed Data Description

Dominion Range (Location--166°10'E, 85°15'S, Elevation--2,700 meters) One 6 meter snow pit dug and sampled in 1984-1985, 3 cm sampling interval. Four 1 meter snow pits, dug and sampled in 1984-1985, 3 cm sampling interval. One core drilled austral summer 1984-1985; 160 meters.

DATA SETS AVAILABLE: 6 M snow pit: Chemistry, beta profile, density 1 meter snow pits: Chemistry, density Core: Chemistry (Na, NH4, K, Mg, Ca, Cl, NO3, SO4, MSA), particles, lead-210 profile. The pits were dug and sampled at a 3 cm interval by the Glacier Research Group (GRG), using established protocols to prevent contamination. The samples for major ion chemistry remained frozen until melted for analysis in the GRG lab, located at the University of New Hampshire (UNH). The core was drilled for GRG by the Polar Ice Coring Office (PICO). All core processing was done by GRG using established protocols to prevent contamination. A portion of the core, 12-18 meters did not survive transport from Antarctica to the United States. Ten discontinuous portions of the core (centered around ECM peaks) were sampled at approximately 3 cm intervals and analyzed in 1985-6 (18-20 m; 27-31 m; 33-41 m; 45-54 m; 61-63 m; 67-71 m; 74-6m; 80-81 m; 85-90 m; 93-96m m). Chemistry from these sections consists of Cl, NO3, SO4, and Na. The remaining sections of core were sampled continuously in 20 cm sections in 1991. Chemistry for these samples consists of Cl, NO3, SO4, MSA, Na, NH4, K, Mg, Ca and insoluable particles. All data except the stable oxygen isotope data, which is from Piet Grootes at the University of Washington, was generated by GRG.

Analytical methods: Initial major ion analyses (for the snow pits and the initial core processing) consisted of determination of major anion concentrations (Cl, NO3, SO4) by ion chromatography and sodium (Na) by flameless atomic absorption spectrophotometry. A portion of the refrozen sample remaining from the 6 meter pit was analyzed by ion chromatography in 1989-90 for the suite of major cations. Core samples processed in 1991 were analyzed for major anion, major cation and methanesulfonic acid (MSA) by ion chromatograpy and for insoluble microparticle concentrations. The latter were determined on a Elzone 280 PC housed in a clean room at UNH (64 logarithmically spaced channels from 0.65 micrometers to 13 micrometers). Beta samples were melted, acidified, and filtered through cation exchange filters. The filters were counted with a gas-flow proportional counter at UNH. Lead-210 was determined by alpha spectrometric counting of Po-210 which had been plated onto silver planchets. MSA was determined on the initial suite (1984) of samples by Pai Yei Whung at the University of Miami as part of her Ph.D. disseration. Na values determined by both atomic absorption spectrophotometry (AAS) and ion chromatography (IC) for the 6 meter pit are presented. Differences between the two values reflect analytical uncertainty and perhaps also to the presence of insoluble Na in the samples that would be detected by AAS but not by IC.

Contacts:
Sallie Whitlow, Glacier Research Group, Institute for the Study of Earth, Oceans and Space, Morse Hall, University of New Hampshire, Durham, New Hampshire 03824603-862-4129 siw@unh.edu
Dr. Paul Mayewski, Glacier Research Group, Institute for the Study of Earth, Oceans and Space, Morse Hall, University of New Hampshire, Durham, New Hampshire 03824 603-862-3146

Publications:
Mayewski, P.A. et al., 1995, An Ice-core based, late Holocene history for the Transantarctic Mountains, Antarctica. Contributions to Antarctic Research IV, Antarctic Res. Series, 67, 33-45.

Mayewski, P.A. and M.R. Legrand, 1990, Recent increase in nitrate concentration of Antarctic snow, Nature, 346, 258-260.

Mayewski, P.A., M.S. Twickler, W. B. Lyons, M.J. Spencer, D.A. Meese, A J. Gow, P. Grootes, T. Sowers, M.S. Watson, and E. Saltzman, 1990, The Dominion Range ice core, Queen Maud Mountains, Antarctica-General site and core characteristics with implications, J. Glaciol., 36, 11-16.

Mayewski, P.A., W.B. Lyons, M.J. Spencer, M.S. Twickler, P.M. Grootes and M. Stuiver, 1988, A climatic record using an ice core from the Transantarctic Mountains, Antarctica (abstract), Annals of Glaciol., 10.

Data Fields -999 indicates no data -888 indicates sample below the level of detection. Precision is the average of the coefficient of variations calculated for each pair of duplicate aliquots analyzed. PIT_6M_Chem: Top depth, meters Bottom depth, meters; Chloride (Cl), micrograms per liter; precision 3% Nitrate (NO3), micrograms/L; precison 3% Sulfate (SO4), micrograms/L; precision 3% Sodium (Na) by AAS, micrograms/L; precision 20% Sodium (Na) by IC, micrograms/L; precision 3% Potassium (K) by IC, micrograms/L; precision 4% Magnesium (Mg) by IC, micrograms/L; precision 3% Calcium (Ca) by IC, micrograms/L; precision 9% Oxygen isotopes (18O), standard per mil notation Date, fraction of year; PIT_6M_BETA: Top, meters; Bottom, meters; Counts per hour per kilogram PIT_6M_DENSITY: Depth, meter Density, grams per centimeter cubed PIT_DR3S_DENSITY Top, meters; Bottom, meters; Density, grams per centimeter cubed PIT _DR3S_CHEM Top depth, meters; Bottom depth, meters; Sodium (Na) by AAS, micrograms/L; precision 20% Chloride (Cl), micrograms per liter; precision 3% Nitrate (NO3), micrograms/L; precison 3% Sulfate (SO4), micrograms/L; precision 3% PIT_DR5_CHEM Top depth, meters; Bottom depth, meters; Sodium (Na) by AAS, micrograms/L; precision 20% Chloride (Cl), micrograms per liter; precision 3% Nitrate (NO3), micrograms/L; precison 3% Sulfate (SO4), micrograms/L; precision 3 % Density, grams per centimeter cubed PIT_DR7_CHEM Top depth, meters; Bottom depth, meters; Sodium (Na) by AAS, micrograms/L; precision 20% Chloride (Cl), micrograms per liter; precision 3% Nitrate (NO3), micrograms/L; precison 3% Sulfate (SO4), micrograms/L; precision 3% Density, grams per centimeter cubed PIT_DR3N_CHEM Top depth, meters; Bottom depth, meters; Sodium (Na) by AAS, micrograms/L; precision 20% Chloride (Cl), micrograms per liter; precision 3% Nitrate (NO3), micrograms/L; precison 3% Sulfate (SO4), micrograms/L; precision 3% PIT DR3N_DENSITY Top, meters; Bottom, meters; Density, grams per centimeter cubed PB210_DATA: Top, meters; Bottom, meters; Pb-210 Activity, dissintegrations per minute per kilogram (dpm/Kg); Sigma, one sigma uncertainty, dpm/Kg CORE_18O: Top depth, meters; Bottom depth, meters; Oxygen isotopes (18O), standard per mil notation CORE_84_CHEM: Top depth, meters; Bottom depth, meters; Chloride (Cl), micrograms per liter; precision 1% Nitrate (NO3), micrograms/L; precison 2% Sulfate (SO4), micrograms/L; precision 2% Sodium (Na) by AAS, micrograms/L; precision 20% Core_CHEM: Top depth, meters; Bottom depth, meters; Sodium (Na), micrograms/liter; precision 2% to 20%* Ammonium (NH4), micrograms/L; precision 5 % Potassium (K), micrograms/L; precision 4 % Magnesium (Mg), micrograms/L; precision 3% Calcium (Ca), micrograms/L; precision 4% Chloride (Cl), micrograms/L; precision 2% Nitrate (NO3), micrograms/L; precision 3% Sulfate (SO4), micrograms/L; precision 3% MSA (methanesulfonic acid), micrograms/L; precison 15% Particles, total number of particles per milliliter between 0.7 micrometers and 11.3 micrometers (size based on the assumption that the particles are spherical).

General comments on the core chemistry data: The data for the Core_CHEM is a melding of the 20 cm sections processed in 1991 and averaged values from the 1984-5 processing, including the 6 meter snow pit. This the data set used to generate the figures in the Antarcitc Research Series paper. The firn samples in 1984 were processed with a lexan saw, the ice samples were rinsed with super pure water and melted in precleaned containers. The samples processed in 1991 were cleaned using a routering system developed by Mark Twickler and melted in precleaned containers. The 1991 samples were analyzed the same day the samples were melted. It should be emphasized, Na values analyzed by flameless atomic absorption spectrophotometry are probably total Na values whereas the Na values from ion chromatography analysis are for soluable Na (i.e. whatever dissolves when the sample is melted and dissolves in the acidic eluent used for cation IC analysis).

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