Unit Affiliation: Geochemistry, Lamont-Doherty Earth Observatory (LDEO)
A region detailed chronology of glacial pulses during the Holocene will developed for New Zealand's Southern Alps by 10Be surface exposure dating moraines from both the eastern and western flanks of New Zealand and from both large glacier valleys and small glacier valleys in order to better understand climate instability during the Holocene and its affects on humans.
OUTCOMES: Found that New Zealand's Southern Alp's glaciers showed anti-symmetric patterns compared to northern glaciers, however northern and southern glaciers have been retreating in sync over the last 150 years. This has shown that there was not a "global Little Ice Age" and that anthropogenic forcing has surpassed the natural inter-hemispherically anti-phased climate pattern. Six journal publications and two websites.
Benchmarking Spatial Patterns of Glacier Change
Collaborative Research: A High-Sensitivity 10Be and Extraterrestrial 3He Record from an Ice Core at South Pole
Collaborative Research: Constraining Arc Processes Through Comprehensive Geochemical Study of the Chilean Southern Volcanic Zone
Collaborative Research: Testing Artic Ice Sheet Sensitivity to Abrupt Climate Change