The Toba Volcanic Event and Interstadial/Stadial Climates at the Marine Isotopic Stage 5 to 4 Transition in the Northern Indian Ocean
Abstract The Toba volcanic event, one of the largest eruptions during the Quaternary, is documented in marine sediment cores from the northeastern Arabian Sea. On the crest of the Murray Ridge and along the western Indian continental margin, we detected distinct concentration spikes and ash layers o...
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crcambridgeupr:10.1006/qres.2001.2291 2024-09-15T18:09:56+00:00 The Toba Volcanic Event and Interstadial/Stadial Climates at the Marine Isotopic Stage 5 to 4 Transition in the Northern Indian Ocean Schulz, Hartmut Emeis, Kay-Christian Erlenkeuser, Helmut von Rad, Ulrich Rolf, Christian 2002 http://dx.doi.org/10.1006/qres.2001.2291 http://api.elsevier.com/content/article/PII:S0033589401922914?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589401922914?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S003358940001053X en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Quaternary Research volume 57, issue 1, page 22-31 ISSN 0033-5894 1096-0287 journal-article 2002 crcambridgeupr https://doi.org/10.1006/qres.2001.2291 2024-08-28T04:01:23Z Abstract The Toba volcanic event, one of the largest eruptions during the Quaternary, is documented in marine sediment cores from the northeastern Arabian Sea. On the crest of the Murray Ridge and along the western Indian continental margin, we detected distinct concentration spikes and ash layers of rhyolithic volcanic shards near the marine isotope stage 5–4 boundary with the chemical composition of the “Youngest Toba Tuff.” Time series of the U k′ 37 -alkenone index, planktic foraminiferal species, magnetic susceptibility, and sediment accumulation rates from this interval show that the Toba event occurred between two warm periods lasting a few millennia. Using Toba as an instantaneous stratigraphic marker for correlation between the marine- and ice-core chronostratigraphies, these two Arabian Sea climatic events correspond to Greenland interstadials 20 and 19, respectively. Our data sets thus depict substantial interstadial/stadial fluctuations in sea-surface temperature and surface-water productivity. We show that variable terrigenous (eolian) sediment supply played a crucial role in transferring and preserving the productivity signal in the sediment record. Within the provided stratigraphic resolution of several decades to centennials, none of these proxies shows a particular impact of the Toba eruption. However, our results are additional support that Toba, despite its exceptional magnitude, had only a minor impact on the evolution of low-latitude monsoonal climate on centennial to millennial time scales. Article in Journal/Newspaper Greenland ice core Cambridge University Press Quaternary Research 57 1 22 31 |
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English |
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Abstract The Toba volcanic event, one of the largest eruptions during the Quaternary, is documented in marine sediment cores from the northeastern Arabian Sea. On the crest of the Murray Ridge and along the western Indian continental margin, we detected distinct concentration spikes and ash layers of rhyolithic volcanic shards near the marine isotope stage 5–4 boundary with the chemical composition of the “Youngest Toba Tuff.” Time series of the U k′ 37 -alkenone index, planktic foraminiferal species, magnetic susceptibility, and sediment accumulation rates from this interval show that the Toba event occurred between two warm periods lasting a few millennia. Using Toba as an instantaneous stratigraphic marker for correlation between the marine- and ice-core chronostratigraphies, these two Arabian Sea climatic events correspond to Greenland interstadials 20 and 19, respectively. Our data sets thus depict substantial interstadial/stadial fluctuations in sea-surface temperature and surface-water productivity. We show that variable terrigenous (eolian) sediment supply played a crucial role in transferring and preserving the productivity signal in the sediment record. Within the provided stratigraphic resolution of several decades to centennials, none of these proxies shows a particular impact of the Toba eruption. However, our results are additional support that Toba, despite its exceptional magnitude, had only a minor impact on the evolution of low-latitude monsoonal climate on centennial to millennial time scales. |
format |
Article in Journal/Newspaper |
author |
Schulz, Hartmut Emeis, Kay-Christian Erlenkeuser, Helmut von Rad, Ulrich Rolf, Christian |
spellingShingle |
Schulz, Hartmut Emeis, Kay-Christian Erlenkeuser, Helmut von Rad, Ulrich Rolf, Christian The Toba Volcanic Event and Interstadial/Stadial Climates at the Marine Isotopic Stage 5 to 4 Transition in the Northern Indian Ocean |
author_facet |
Schulz, Hartmut Emeis, Kay-Christian Erlenkeuser, Helmut von Rad, Ulrich Rolf, Christian |
author_sort |
Schulz, Hartmut |
title |
The Toba Volcanic Event and Interstadial/Stadial Climates at the Marine Isotopic Stage 5 to 4 Transition in the Northern Indian Ocean |
title_short |
The Toba Volcanic Event and Interstadial/Stadial Climates at the Marine Isotopic Stage 5 to 4 Transition in the Northern Indian Ocean |
title_full |
The Toba Volcanic Event and Interstadial/Stadial Climates at the Marine Isotopic Stage 5 to 4 Transition in the Northern Indian Ocean |
title_fullStr |
The Toba Volcanic Event and Interstadial/Stadial Climates at the Marine Isotopic Stage 5 to 4 Transition in the Northern Indian Ocean |
title_full_unstemmed |
The Toba Volcanic Event and Interstadial/Stadial Climates at the Marine Isotopic Stage 5 to 4 Transition in the Northern Indian Ocean |
title_sort |
toba volcanic event and interstadial/stadial climates at the marine isotopic stage 5 to 4 transition in the northern indian ocean |
publisher |
Cambridge University Press (CUP) |
publishDate |
2002 |
url |
http://dx.doi.org/10.1006/qres.2001.2291 http://api.elsevier.com/content/article/PII:S0033589401922914?httpAccept=text/xml http://api.elsevier.com/content/article/PII:S0033589401922914?httpAccept=text/plain https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S003358940001053X |
genre |
Greenland ice core |
genre_facet |
Greenland ice core |
op_source |
Quaternary Research volume 57, issue 1, page 22-31 ISSN 0033-5894 1096-0287 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1006/qres.2001.2291 |
container_title |
Quaternary Research |
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57 |
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1 |
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22 |
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31 |
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1810447537204625408 |