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SP19 Gas Chronology Data DOI: https://doi.org/10.15784/601380 Cite as Epifanio, J. (2020) "SP19 Gas Chronology" U.S. Antarctic Program (USAP) Data Center. doi: https://doi.org/10.15784/601380. AMD - DIF Record(s) USAP-1142646_1 Abstract 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. Creator(s): Epifanio, Jenna Date Created: 2020-10-09 Repository: USAP-DC (current) License: Creative Commons Attribution-NonCommercial v4.0 Generic [CC BY-NC 4.0] Spatial Extent(s) West: 99.16, East: 99.16, South: -89.99, North: -89.99 Award(s) NSF 1141839 NSF 1142517 NSF 1443105 NSF 1443397 NSF 1443464 NSF 1443470 NSF 1443472 NSF 1443710 NSF 1643394 NSF 1804154 Version: 1 Related Project(s) Carbonyl Sulfide, Methyl Chloride, and Methyl Bromide Measurements in the New Intermediate-depth South Pole Ice Core Collaborative Research: Record of the Triple-oxygen Isotope and Hydrogen Isotope Composition of Ice from an Ice Core at South Pole Collaborative Research: Inert Gas and Methane Based Climate Records throughout the South Pole Deep Ice Core Collaborative Research: A 1500m Ice Core from South Pole Keywords Antarctica Antarctica Ch4 Glaciers/ice Sheet Glaciology Ice Core Records Ice Core Stratigraphy Methane South Pole SPICEcore