10.1594/PANGAEA.735654
Haug, Gerald H
Gerald H
Haug
Hughen, Konrad A
Konrad A
Hughen
0000-0003-3201-934X
Sigman, Daniel M
Daniel M
Sigman
0000-0002-7923-1973
Peterson, Larry S
Larry S
Peterson
Röhl, Ursula
Ursula
Röhl
0000-0001-9469-7053
Trace metal concentration and age model of ODP Hole 165-1002C sediments
PANGAEA
2001
Drilling/drill rig
Leg165
Joides Resolution
Ocean Drilling Program (ODP)
1996-02-18T16:30:00/1996-02-19T04:30:00
en
Supplementary Publication Series of Datasets
10.1126/science.1059725
3 datasets
application/zip
Creative Commons Attribution 3.0 Unported
Titanium and iron concentration data from the anoxic Cariaco Basin, off the Venezuelan coast, can be used to infer variations in the hydrological cycle over northern South America during the past 14,000 years with subdecadal resolution. Following a dry Younger Dryas, a period of increased precipitation and riverine discharge occurred during the Holocene 'thermal maximum'. Since ~5400 years ago, a trend toward drier conditions is evident from the data, with high-amplitude fluctuations and precipitation minima during the time interval 3800 to 2800 years ago and during the 'Little Ice Age'. These regional changes in precipitation are best explained by shifts in the mean latitude of the Atlantic Intertropical Convergence Zone (ITCZ), potentially driven by Pacific-based climate variability. The Cariaco Basin record exhibits strong correlations with climate records from distant regions, including the high-latitude Northern Hemisphere, providing evidence for global teleconnections among regional climates.
Supplement to: Haug, Gerald H; Hughen, Konrad A; Sigman, Daniel M; Peterson, Larry S; Röhl, Ursula (2001): Southward migration of the Intertropical Convergence Zone through the Holocene. Science, 293(5533), 1304-1308
-65.1694
10.706099999999996
Cayman Rise, Caribbean Sea