South Pole Ice Core Isotopes of N2 and Ar

We present measurements gas measurements from the South Pole Ice Core, including the isotopic composition of molecular nitrogen (δ15N) and argon (δ40Ar), and the argon-nitrogen ratio (δAr/N2). The measurements were made between approximately 490 and 1310 m depth, which is between 5 and 30 kyr BP on...

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Bibliographic Details
Main Authors: Morgan, Jacob, Severinghaus, Jeffrey P.
Format: Dataset
Language:English
Published: U.S. Antarctic Program (USAP) Data Center 2022
Subjects:
Argon
Argon Isotopes
Gas Isotopes
Nitrogen
Nitrogen Isotopes
Ice Core
Firn Temperature Gradient
Firn Thickness
SPICEcore
Firn
Glaciology
Ice Core Records
Glaciers/Ice Sheet
Cryosphere
Antarctica
South Pole
Antarc*
ice core
Ice Sheet
South pole
Online Access:https://dx.doi.org/10.15784/601517
https://www.usap-dc.org/view/dataset/601517
Description
Summary:We present measurements gas measurements from the South Pole Ice Core, including the isotopic composition of molecular nitrogen (δ15N) and argon (δ40Ar), and the argon-nitrogen ratio (δAr/N2). The measurements were made between approximately 490 and 1310 m depth, which is between 5 and 30 kyr BP on the SP19 Gas Chronology. The measurements allow us to reconstruct the past amounts of gravitational and thermal fractionation in the firn and thus reconstruct past firn thickness and temperature gradient. These reconstructions are also included.

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