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

Lead PI: Sharon Hoffmann , Jerry F. McManus

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

September 2011 - August 2014
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.


National Science Foundation (NSF)





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.


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


Modeling and Adapting to Future Climate