XRF-scanned elemental concentrations from sediment cores off Peru, supplement to: Mollier-Vogel, Elfi; Leduc, Guillaume; Böschen, Tebke; Martinez, Philippe; Schneider, Ralph R (2013): Rainfall response to orbital and millennial forcing in northern Peru over the last 18 ka. Quaternary Science Reviews, 76, 29-38
We present a high-resolution marine record of sediment input from the Guayas River, Ecuador, that reflects changes in precipitation along western equatorial South America during the last 18ka. We use log (Ti/Ca) derived from X-ray Fluorescence (XRF) to document terrigenous input from riverine runoff...
Main Authors: | , , , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
PANGAEA - Data Publisher for Earth & Environmental Science
2013
|
Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.824573 https://doi.pangaea.de/10.1594/PANGAEA.824573 |
id |
ftdatacite:10.1594/pangaea.824573 |
---|---|
record_format |
openpolar |
spelling |
ftdatacite:10.1594/pangaea.824573 2023-05-15T17:31:30+02:00 XRF-scanned elemental concentrations from sediment cores off Peru, supplement to: Mollier-Vogel, Elfi; Leduc, Guillaume; Böschen, Tebke; Martinez, Philippe; Schneider, Ralph R (2013): Rainfall response to orbital and millennial forcing in northern Peru over the last 18 ka. Quaternary Science Reviews, 76, 29-38 Mollier-Vogel, Elfi Leduc, Guillaume Böschen, Tebke Martinez, Philippe Schneider, Ralph R 2013 application/zip https://dx.doi.org/10.1594/pangaea.824573 https://doi.pangaea.de/10.1594/PANGAEA.824573 en eng PANGAEA - Data Publisher for Earth & Environmental Science https://dx.doi.org/10.1016/j.quascirev.2013.06.021 Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 CC-BY Climate - Biogeochemistry Interactions in the Tropical Ocean SFB754 Supplementary Collection of Datasets Collection article 2013 ftdatacite https://doi.org/10.1594/pangaea.824573 https://doi.org/10.1016/j.quascirev.2013.06.021 2022-02-08T16:24:46Z We present a high-resolution marine record of sediment input from the Guayas River, Ecuador, that reflects changes in precipitation along western equatorial South America during the last 18ka. We use log (Ti/Ca) derived from X-ray Fluorescence (XRF) to document terrigenous input from riverine runoff that integrates rainfall from the Guayas River catchment. We find that rainfall-induced riverine runoff has increased during the Holocene and decreased during the last deglaciation. Superimposed on those long-term trends, we find that rainfall was probably slightly increased during the Younger Dryas, while the Heinrich event 1 was marked by an extreme load of terrigenous input, probably reflecting one of the wettest period over the time interval studied. When we compare our results to other Deglacial to Holocene rainfall records located across the tropical South American continent, different modes of variability become apparent. The records of rainfall variability imply that changes in the hydrological cycle at orbital and sub-orbital timescales were different from western to eastern South America. Orbital forcing caused an antiphase behavior in rainfall trends between eastern and western equatorial South America. In contrast, millennial-scale rainfall changes, remotely connected to the North Atlantic climate variability, led to homogenously wetter conditions over eastern and western equatorial South America during North Atlantic cold spells. These results may provide helpful diagnostics for testing the regional rainfall sensitivity in climate models and help to refine rainfall projections in South America for the next century. Article in Journal/Newspaper North Atlantic DataCite Metadata Store (German National Library of Science and Technology) Guillaume ENVELOPE(70.150,70.150,-49.350,-49.350) |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
English |
topic |
Climate - Biogeochemistry Interactions in the Tropical Ocean SFB754 |
spellingShingle |
Climate - Biogeochemistry Interactions in the Tropical Ocean SFB754 Mollier-Vogel, Elfi Leduc, Guillaume Böschen, Tebke Martinez, Philippe Schneider, Ralph R XRF-scanned elemental concentrations from sediment cores off Peru, supplement to: Mollier-Vogel, Elfi; Leduc, Guillaume; Böschen, Tebke; Martinez, Philippe; Schneider, Ralph R (2013): Rainfall response to orbital and millennial forcing in northern Peru over the last 18 ka. Quaternary Science Reviews, 76, 29-38 |
topic_facet |
Climate - Biogeochemistry Interactions in the Tropical Ocean SFB754 |
description |
We present a high-resolution marine record of sediment input from the Guayas River, Ecuador, that reflects changes in precipitation along western equatorial South America during the last 18ka. We use log (Ti/Ca) derived from X-ray Fluorescence (XRF) to document terrigenous input from riverine runoff that integrates rainfall from the Guayas River catchment. We find that rainfall-induced riverine runoff has increased during the Holocene and decreased during the last deglaciation. Superimposed on those long-term trends, we find that rainfall was probably slightly increased during the Younger Dryas, while the Heinrich event 1 was marked by an extreme load of terrigenous input, probably reflecting one of the wettest period over the time interval studied. When we compare our results to other Deglacial to Holocene rainfall records located across the tropical South American continent, different modes of variability become apparent. The records of rainfall variability imply that changes in the hydrological cycle at orbital and sub-orbital timescales were different from western to eastern South America. Orbital forcing caused an antiphase behavior in rainfall trends between eastern and western equatorial South America. In contrast, millennial-scale rainfall changes, remotely connected to the North Atlantic climate variability, led to homogenously wetter conditions over eastern and western equatorial South America during North Atlantic cold spells. These results may provide helpful diagnostics for testing the regional rainfall sensitivity in climate models and help to refine rainfall projections in South America for the next century. |
format |
Article in Journal/Newspaper |
author |
Mollier-Vogel, Elfi Leduc, Guillaume Böschen, Tebke Martinez, Philippe Schneider, Ralph R |
author_facet |
Mollier-Vogel, Elfi Leduc, Guillaume Böschen, Tebke Martinez, Philippe Schneider, Ralph R |
author_sort |
Mollier-Vogel, Elfi |
title |
XRF-scanned elemental concentrations from sediment cores off Peru, supplement to: Mollier-Vogel, Elfi; Leduc, Guillaume; Böschen, Tebke; Martinez, Philippe; Schneider, Ralph R (2013): Rainfall response to orbital and millennial forcing in northern Peru over the last 18 ka. Quaternary Science Reviews, 76, 29-38 |
title_short |
XRF-scanned elemental concentrations from sediment cores off Peru, supplement to: Mollier-Vogel, Elfi; Leduc, Guillaume; Böschen, Tebke; Martinez, Philippe; Schneider, Ralph R (2013): Rainfall response to orbital and millennial forcing in northern Peru over the last 18 ka. Quaternary Science Reviews, 76, 29-38 |
title_full |
XRF-scanned elemental concentrations from sediment cores off Peru, supplement to: Mollier-Vogel, Elfi; Leduc, Guillaume; Böschen, Tebke; Martinez, Philippe; Schneider, Ralph R (2013): Rainfall response to orbital and millennial forcing in northern Peru over the last 18 ka. Quaternary Science Reviews, 76, 29-38 |
title_fullStr |
XRF-scanned elemental concentrations from sediment cores off Peru, supplement to: Mollier-Vogel, Elfi; Leduc, Guillaume; Böschen, Tebke; Martinez, Philippe; Schneider, Ralph R (2013): Rainfall response to orbital and millennial forcing in northern Peru over the last 18 ka. Quaternary Science Reviews, 76, 29-38 |
title_full_unstemmed |
XRF-scanned elemental concentrations from sediment cores off Peru, supplement to: Mollier-Vogel, Elfi; Leduc, Guillaume; Böschen, Tebke; Martinez, Philippe; Schneider, Ralph R (2013): Rainfall response to orbital and millennial forcing in northern Peru over the last 18 ka. Quaternary Science Reviews, 76, 29-38 |
title_sort |
xrf-scanned elemental concentrations from sediment cores off peru, supplement to: mollier-vogel, elfi; leduc, guillaume; böschen, tebke; martinez, philippe; schneider, ralph r (2013): rainfall response to orbital and millennial forcing in northern peru over the last 18 ka. quaternary science reviews, 76, 29-38 |
publisher |
PANGAEA - Data Publisher for Earth & Environmental Science |
publishDate |
2013 |
url |
https://dx.doi.org/10.1594/pangaea.824573 https://doi.pangaea.de/10.1594/PANGAEA.824573 |
long_lat |
ENVELOPE(70.150,70.150,-49.350,-49.350) |
geographic |
Guillaume |
geographic_facet |
Guillaume |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://dx.doi.org/10.1016/j.quascirev.2013.06.021 |
op_rights |
Creative Commons Attribution 3.0 Unported https://creativecommons.org/licenses/by/3.0/legalcode cc-by-3.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/pangaea.824573 https://doi.org/10.1016/j.quascirev.2013.06.021 |
_version_ |
1766129135566979072 |