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Atlantic Multidecadal Oscillation (Amo) Forcing on the Late Holocene Cauca Paleolake Dynamics, Northern Andes of Colombia : Volume 11, Issue 4 (01/07/2015)

By Martínez, J. I.

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Book Id: WPLBN0004006819
Format Type: PDF Article :
File Size: Pages 16
Reproduction Date: 2015

Title: Atlantic Multidecadal Oscillation (Amo) Forcing on the Late Holocene Cauca Paleolake Dynamics, Northern Andes of Colombia : Volume 11, Issue 4 (01/07/2015)  
Author: Martínez, J. I.
Volume: Vol. 11, Issue 4
Language: English
Subject: Science, Climate, Past
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Battarbee, R. W., Yokoyama, Y., Obrochta, S., & Martínez, J. I. (2015). Atlantic Multidecadal Oscillation (Amo) Forcing on the Late Holocene Cauca Paleolake Dynamics, Northern Andes of Colombia : Volume 11, Issue 4 (01/07/2015). Retrieved from

Description: Department Ciencias de la Tierra, Universidad EAFIT, Area de Ciencias del Mar, Medellín, Colombia. The Atlantic Multidecadal Oscillation (AMO), is a major driving climate mechanism, in the eastern Caribbean Sea and the South Atlantic Ocean in relation to the dynamics of the South American Monsoon System (SAMS) for the late Holocene. Here we document the AMO signal in the San Nicolás-1 core of the Cauca paleolake (Santa Fé–Sopetrán Basin) in the northern Andes. Wavelet spectrum analysis of the gray scale of the San Nicolás-1 core provides evidence for a 70 yr AMO periodicity for the 3750 to 350 yr BP time interval, whose pattern is analogous to the one documented for the Cariaco Basin. This supports a possible correlation between enhanced precipitation and ENSO variability with a positive AMO phase during the 2000 to 1500 yr BP interval, and its forcing role on the Cauca ria lake deposits, which led to increased precipitation and to the transition from a igapo (black water) to a varzea (white water) environment ca. 3000 yr BP.

Atlantic Multidecadal Oscillation (AMO) forcing on the late Holocene Cauca paleolake dynamics, northern Andes of Colombia

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