Not logged in
PANGAEA.
Data Publisher for Earth & Environmental Science

Mohtadi, Mahyar; Romero, Oscar E; Kaiser, Jérôme (2007): A high-resolution multiproxy study of sediment core GeoB7186-3 from SE Pacific off southern South America [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.726864, Supplement to: Mohtadi, Mahyar; Romero, Oscar E; Kaiser, Jérôme; Hebbeln, Dierk (2007): Cooling of the southern high latitudes during the Medieval Period and its effect on ENSO. Quaternary Science Reviews, 26(7-8), 1055-1066, https://doi.org/10.1016/j.quascirev.2006.12.008

Always quote citation above when using data! You can download the citation in several formats below.

RIS CitationBibTeX CitationShow MapGoogle Earth

Abstract:
A high-resolution multiproxy study performed on a marine record from SE Pacific off southern South America was used to reconstruct past regional environmental changes and their relation to global climate, particularly to El Niño/Southern Oscillation (ENSO) phenomenon during the last 2200 years. Our results suggest a sustained northward shift in the position of the zonal systems, i.e. the Southern Westerly Wind belt and the Antarctic Circumpolar Current, which occurred between 1300 and 750 yr BP. The synchrony of the latitudinal shift with cooling in Antarctica and reduced ENSO activity observed in several marine and terrestrial archives across South America suggests a causal link between ENSO and the proposed displacement of the zonal systems. This shift might have acted as a positive feedback to more La Niña-like conditions between 1300 and 750 yr BP by steepening the hemispheric and tropical Pacific zonal sea surface temperature gradient. This scenario further suggests different boundary conditions for ENSO before 1300 and after 750 yr BP.
Project(s):
Center for Marine Environmental Sciences (MARUM)
Coverage:
Latitude: -44.149330 * Longitude: -75.158160
Date/Time Start: 2001-05-05T15:48:00 * Date/Time End: 2001-05-05T15:48:00
Event(s):
GeoB7186-3 * Latitude: -44.149330 * Longitude: -75.158160 * Date/Time: 2001-05-05T15:48:00 * Elevation: -1169.0 m * Recovery: 6.1 m * Location: off Chile * Campaign: SO156/3 (PUCK) * Basis: Sonne * Method/Device: Gravity corer (Kiel type) (SL)
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
3 datasets

Download Data

Download ZIP file containing all datasets as tab-delimited text — use the following character encoding:

Datasets listed in this publication series

  1. Mohtadi, M; Romero, OE; Kaiser, J et al. (2007): (Fig. 3) Age and multiproxy studies of sediment core GeoB7186-3. https://doi.org/10.1594/PANGAEA.676709
  2. Mohtadi, M; Romero, OE; Kaiser, J et al. (2007): (Table 1) Age control points of sediment core GeoB7186-3. https://doi.org/10.1594/PANGAEA.676715
  3. Mohtadi, M; Romero, OE; Kaiser, J et al. (2007): (Fig. 3) Lithic concentration derived from sediment brightness and iron intensity of sediment core GeoB7186-3. https://doi.org/10.1594/PANGAEA.676708