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Earth Institute Research Projects

Collaborative Research: Western Equatorial Pacific Rainfall During the Holocene: New Inter-annual Records from High Resolution Borneo Stalagmites

Lead PI: Sharon Hoffmann , Jerry McManus

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

September 2011 - August 2014
Inactive
Global ; Borneo
Project Type: Research

DESCRIPTION: The project will better characterize the evolution of ENSO during the Holocene using speleothems from Borneo. The team will complete a continuous U/Th-dated high-resolution reconstruction of interannual to decadal hydrological variability.

OUTCOMES: Collected and analyzed hundreds of samples. The results show that there was significantly less variation from ~6kyr BP to ~3kyr BP which matches coral records from the region, but not sediment records.

SPONSOR:

National Science Foundation (NSF)

FUNDED AMOUNT:

$57,327

WEBSITE:

https://www.nsf.gov/awardsearch/showAward?AWD_ID=1103466&HistoricalAwards=false

PUBLICATIONS:

Chen, S., Hoffmann, S.S., Lund, D.C., Cobb, K.M., Emile-Geay, J. and Adkins, J.F., 2016. A high-resolution speleothem record of western equatorial Pacific rainfall: Implications for Holocene ENSO evolution. Earth and Planetary Science Letters, 442, pp.61-71. https://www.sciencedirect.com/science/article/pii/S0012821X16300759

KEYWORDS

thorium el nino southern oscillation (enso) climate change uranium climate variability ocean and climate physics sea surface temperature paleoclimate speleothems

THEMES

Modeling and Adapting to Future Climate