Additional Participants

Senior Personnel

Steven Arcone
Timonthy Kenna
Uwe Morgenstern
Benjamin Bostick

Graduate Student

Bruce Williamson
Nathan Vogan
Benjamin Gross

Undergraduate Student

Zachary Von Hasseln
Tobias Burdet
Lee Wilson
Sam Kelley
Kaitlyn Butcher
Brittany Gilman

Technician, Programmer

Douglas Introne
Sharon Sneed
Michael Waskiewicz
Terrence Gacke

Rsearch Experience for Undergraduates

Marcienne Scofield

Organizational Partners

US Army Cold Regions Research and Engine
Columbia University Lamont Doherty Earth Observatory
Institute of Geological and Nuclear Science
Dartmouth College
The Ohio State University

Project Period

July 1, 2003-June 30, 2008

Level of Access

Open-Access Report

Grant Number

0228052

Submission Date

10-29-2008

Abstract

This award supports a project to collect and develop high-resolution ice core records from the Dry Valleys region of Antarctica, and provide interpretations of interannual to decadal-scale climate variability during the last 2000 years (late Holocene). The project will test hypotheses related to ocean/atmosphere teleconnections (e.g., El Nino Southern Oscillation, Antarctic Oscillation) that may be responsible for major late Holocene climate events such as the Little Ice Age in the Southern Hemisphere. Conceptual and quantitative models of these processes in the Dry Valleys during the late Holocene are critical for understanding recent climate changes, and represent the main scientific merit of the project. We plan to collect intermediate-length ice cores (100-200m) at four sites along transects in Taylor Valley and Wright Valley, and analyze each core at high resolution for stable isotopes (d18O, dD), major ions (Na+, Mg2+, Ca2+, K+, NH4+, Cl-, NO3-, SO42-, MSA), and trace elements (Al, Fe, S, Sr, B). A suite of statistical techniques will be applied to the multivariate glaciochemical dataset to identify chemical associations and to calibrate the time-series records with available instrumental data. Broader impacts of the project include: 1) contributions to several ongoing interdisciplinary Antarctic research programs; 2) graduate and undergraduate student involvement in field, laboratory, and data interpretation activities; 3) use of project data and ideas in several UMaine courses and outreach activities; and 4) data dissemination through peer-reviewed publications, UMaine and other paleoclimate data archive websites, and presentations at national and international meetings.

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