Chemical and sediment characteristics of ice cores collected from the ablation zones of Canada, Commonwealth, Howard, Hughes, and Seuss Glaciers in the McMurdo Dry Valleys, Antarctica from 2015 to 2019

Summary

Abstract: 

This data package contains chemical and sediment characteristics of ice cores collected from the ablation zones of five glaciers in Taylor Valley, located in the McMurdo Dry Valleys region of Antarctica, during the 2015-16, 2016-17, 2017-18, and 2018-19 austral summers. Specifically, shallow ice cores were collected from the ablation zones of Hughes, Howard, Seuss, Commonwealth, and Canada Glaciers in order to characterize the spatial and temporal evolution of ice chemistry and sediment concentration across Taylor Valley. Cores were collected in triplicate from each sampling location and measured 79 mm in diameter and up to 1 m in depth. Cores were sectioned in 5 cm (0-25 cm depth) and 25 cm increments (25 cm to the maximum depth of the core) prior to analyzing chemical and sediment characteristics.

Date Range: 

November 25, 2015 to January 8, 2019
Data Citation
Bergstrom, A.J., Gooseff, M.N. 2021. Chemical and sediment characteristics of ice cores collected from the ablation zones of Canada, Commonwealth, Howard, Hughes, and Seuss Glaciers in the McMurdo Dry Valleys, Antarctica from 2015 to 2019. Environmental Data Initiative. DOI: 10.6073/pasta/9943dc9f5b04e9d24424911c19349b58. Dataset accessed 5 August 2021.
Dataset(s)

Variables (click to expand): 

DATASET_CODE
  • Label: Dataset code
  • Definition: Internal dataset code.
  • Type: Nominal
  • Missing values: None specified
GLACIER
  • Label: Glacier
  • Definition: Name of the glacier where the ice core was collected.
  • Type: Nominal
  • Missing values: None specified
SAMPLE_DATE
  • Label: Sample date
  • Definition: Date of sample collection (GMT +13).
  • Type: Date/time
  • Date format: MM/DD/YY
  • Missing values: None specified
LATITUDE
  • Label: Latitude
  • Definition: Latitude of sample collection (GCS WGS1984) in decimal degrees.
  • Type: Physical quantity
  • Unit: decimalDegrees
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
LONGITUDE
  • Label: Longitude
  • Definition: Longitude of sample collection (GCS WGS1984) in decimal degrees.
  • Type: Physical quantity
  • Unit: decimalDegrees
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
CORE_ID
  • Label: Ice Core ID
  • Definition: Numeric ID specifying the site of the ice core collection. Sometimes this is a mass balance stake number if collected adjacent to a stake. Otherwise, 1-4.
  • Type: Nominal
  • Missing values: None specified
CORE_REP
  • Label: Ice Core Replicate
  • Definition: Letter associated with the location and replicate in the set of three ice cores collected at that time. If multiple core sets were collected at that location over the season, replicates will be DEF, GHI, etc.
  • Type: Nominal
  • Missing values: None specified
TOP_DEPTH
  • Label: Ice core top depth
  • Definition: The depth from the ice surface of the top of the core section.
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
BOTTOM_DEPTH
  • Label: Ice core bottom depth
  • Definition: The depth from the ice surface of the bottom of the core section.
  • Type: Physical quantity
  • Unit: centimeter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
SED_MASS_G
  • Label: Sediment mass
  • Definition: Mass of sediment contained in the ice core.
  • Type: Physical quantity
  • Unit: grams
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
SED_NOTES
  • Label: Sediment notes
  • Definition: Any specific notes about the ice cores or sediment measurements.
  • Type: Nominal
  • Missing values: None specified
LI_MG_L
  • Label: Lithium concentration
  • Definition: Lithium concentration in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter (mg/L)
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
NA_MG_L
  • Label: Sodium concentration
  • Definition: Sodium concentration in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
K_MG_L
  • Label: Potassium concentration
  • Definition: Potassium concentration in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
MG_MG_L
  • Label: Magnesium concentration
  • Definition: Magnesium concentration in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
CA_MG_L
  • Label: Calcium concentration
  • Definition: Calcium concentration in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_NH4_MG_L
  • Label: Ammonium concentration
  • Definition: Ammonium concentration (as N) in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
F_MG_L
  • Label: Fluoride concentration
  • Definition: Fluoride concentration in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
CL_MG_L
  • Label: Chloride concentration
  • Definition: Chloride concentration in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
BR_MG_L
  • Label: Bromide concentration
  • Definition: Bromide concentration in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
N_NO3_MG_L
  • Label: Nitrate concentration
  • Definition: Nitrate concentration (as N) in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
P_PO4_MG_L
  • Label: Phosphate concentration
  • Definition: Phosphate concentration (as P) in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
SO4_MG_L
  • Label: Sulfate concentration
  • Definition: Sulfate concentration in the ice core. Value of -100 is below detection limit, while -9999 indicates an unanalyzed sample and/or missing value.
  • Type: Physical quantity
  • Unit: milligramsPerLiter
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
D18O
  • Label: delta 18O
  • Definition: Delta 18O signature
  • Type: Physical quantity
  • Unit: permil
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
D18O_ACCURACY
  • Label: delta 18O accuracy
  • Definition: Accuracy of delta 18O value, estimated as average accuracy over a run of 40 samples.
  • Type: Physical quantity
  • Unit: permil
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
DD
  • Label: delta deuterium
  • Definition: Delta deuterium signature.
  • Type: Physical quantity
  • Unit: permil
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
DD_ACCURACY
  • Label: Delta deuterium accuracy
  • Definition: Accuracy of delta deuterium value, estimated as average accuracy over a run of 40 samples.
  • Type: Physical quantity
  • Unit: permil
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
D_EXCESS
  • Label: Deuterium excess
  • Definition: Deuterium excess
  • Type: Physical quantity
  • Unit: permil
  • Maximum: Not specified
  • Minimum: Not specified
  • Precision: Not specified
  • Missing values: None specified
COMMENTS
  • Label: Comments
  • Definition: Comments related to chemistry analysis.
  • Type: Nominal
  • Missing values: None specified

Short name: 

GLAC_CHEM_ICE

Dataset ID: 

2021
People

Principal Investigator(s): 

Contact: 

Associated Personnel: 

Lab Technician
Field Crew
Field Crew
Field Crew
Field Crew
Field Crew
Data Manager