SP19 Gas Chronology

We present the SP19 gas chronology for the South Pole ice core. The chronology is based on stratigraphic matching of abrupt methane (CH4) changes. To construct the chronology, abrupt changes in CH4 during the glacial period and small, 20-30ppb, centennial scale changes in CH4 were used with analogou...

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Bibliographic Details
Main Author: Epifanio, Jenna
Format: Dataset
Language:unknown
Published: IEDA: US Antarctic Program Data Center 2020
Subjects:
Glaciology
South Pole
Methane
Antarctica
SPICEcore
Ice Core Records
Glaciers/ice Sheet
Ch4
Ice Core Stratigraphy
Antarctic
West Antarctic Ice Sheet
Antarc*
ice core
Ice Sheet
South pole
Online Access:https://search.dataone.org/view/sha256:7b8d6e5b6bda21009814facd44abcfaf0c9e47ee1343c6e3b373a5c4337d822b
Description
Summary:We present the SP19 gas chronology for the South Pole ice core. The chronology is based on stratigraphic matching of abrupt methane (CH4) changes. To construct the chronology, abrupt changes in CH4 during the glacial period and small, 20-30ppb, centennial scale changes in CH4 were used with analogous data from the West Antarctic Ice Sheet Divide ice core. Stratigraphic matching was verified by an optimization algorithm. The ages cover the last 52,586 years. Absolute uncertainty increases with depth until ± 540 years.

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