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Stable Isotope Constraints on Carbon Dioxide and Nitrous Oxide Variations at the Onset of the Last Glacial Period: New Ice Cores from Taylor Glacier, Antarctica

Creator:

Menking, James A.

Abstract:

New ice cores retrieved from the Taylor Glacier (Antarctica) blue ice area contain ice and air spanning the Marine Isotope Stage (MIS) 5/4 transition, a period of global cooling and ice sheet expansion. Chronologies were determined for the ice and air bubbles in the new ice cores by visually matching...

Resource Type:

Dissertation

Full Text:

, Jake Ward, and Andrew M. Smith for help with field logistics and drilling, sampling, and packing ice
Interpreting Climate of the Past from High-Resolution Ice Core Records of Methane

Creator:

Lee, James E.

Abstract:

Methane is a product of biogeochemical processes which respond to changes in climate. The history of atmospheric methane is recorded by ice cores providing insight into past changes in these biogeochemical processes. This dissertation is comprised of three studies which focus on centennial- and millenial-scale variability of methane from ice...

Resource Type:

Dissertation

Full Text:

. . . . . . . . . . . . . . . . . . . . 28 2.5.3 Age Control Points in the Disturbed Ice: 746-753 m . . . . . 29 2.5.4 Dynamic Firn Model to