the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Atlantic Multidecadal Oscillation (AMO) forcing on the late Holocene Cauca paleolake dynamics, northern Andes of Colombia
J. I. Martínez
S. Obrochta
Y. Yokoyama
R. W. Battarbee
Abstract. 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.
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J. I. Martínez et al.
Interactive discussion


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RC C1544: 'Review of "Atlantic Multidecadal Oscillation (AMO) forcing on the late Holocene Cauca paleolake dynamics, northern Andes of Colombia" by Martinez et al.', Anonymous Referee #1, 01 Sep 2015
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EC C1892: 'Close Paper Discussion', Ricardo Villalba, 03 Oct 2015
Interactive discussion


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RC C1544: 'Review of "Atlantic Multidecadal Oscillation (AMO) forcing on the late Holocene Cauca paleolake dynamics, northern Andes of Colombia" by Martinez et al.', Anonymous Referee #1, 01 Sep 2015
-
EC C1892: 'Close Paper Discussion', Ricardo Villalba, 03 Oct 2015
J. I. Martínez et al.
J. I. Martínez et al.
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Cited
2 citations as recorded by crossref.
- Ecology and paleoenvironmental application of testate amoebae in peatlands of the high-elevation Colombian páramo B. Liu et al. 10.1017/qua.2018.143
- Streamflow Intensification Driven by the Atlantic Multidecadal Oscillation (AMO) in the Atrato River Basin, Northwestern Colombia W. Loaiza Cerón et al. 10.3390/w12010216