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Earth Institute Research Projects

U-Series Disequilibrium in Weddell Sea Sediments: Rates of Iceberg Discharge and Impact on Global Oceans

Lead PI: Adi Torfstein , Jerry McManus

Unit Affiliation: Geochemistry, Lamont-Doherty Earth Observatory (LDEO)

December 2010 - November 2013
Inactive
Antarctica
Project Type: Research

DESCRIPTION: The project is to use "commination dating" to determine the transport time of fine clastic sediments produced by Antarctic subglacial erosion and deposition in the Weddell Sea over the last ~250,000 years. This sedimentation rate can be use to determine past glacial weathering rates and thus the contribution of Antarctic sheet ice to global sea level changes.

OUTCOMES: There have been five publications so far from this project.

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$178,098

RESEARCH TEAM:

Sidney Hemming, Joanne Johnson

EXTERNAL COLLABORATORS:

British Antarctic Survey

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=0958276&HistoricalAwards=false

KEYWORDS

ocean and climate physics subglacial erosion sediment oceans iceberg discharge paleoclimate climate change climate