Drought in the Northern Bahamas from 3300 to 2500 Years Ago
Intensification and western displacement of the North Atlantic Subtropical High (NASH) is projected for this century, which can decrease Caribbean and southeastern American rainfall on seasonal and annual timescales. However, additional hydroclimate records are needed from the northern Caribbean to...
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Digital Commons @ University of South Florida
2018
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Online Access: | https://digitalcommons.usf.edu/geo_facpub/1908 https://doi.org/10.1016/j.quascirev.2018.02.014 |
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ftusouthflorida:oai:digitalcommons.usf.edu:geo_facpub-2889 2023-07-30T04:05:16+02:00 Drought in the Northern Bahamas from 3300 to 2500 Years Ago van Hengstum, Peter J. Maale, Gerhard Donnelly, Jeffrey P. Albury, Nancy A. Onac, Bogdan P Sullivan, Richard Winkler, Tyler S. Tamalavage, Anne E. MacDonald, Dana 2018-04-01T07:00:00Z https://digitalcommons.usf.edu/geo_facpub/1908 https://doi.org/10.1016/j.quascirev.2018.02.014 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/geo_facpub/1908 doi:10.1016/j.quascirev.2018.02.014 https://doi.org/10.1016/j.quascirev.2018.02.014 School of Geosciences Faculty and Staff Publications Earth Sciences article 2018 ftusouthflorida https://doi.org/10.1016/j.quascirev.2018.02.014 2023-07-13T20:44:58Z Intensification and western displacement of the North Atlantic Subtropical High (NASH) is projected for this century, which can decrease Caribbean and southeastern American rainfall on seasonal and annual timescales. However, additional hydroclimate records are needed from the northern Caribbean to understand the long-term behavior of the NASH, and better forecast its future behavior. Here we present a multi-proxy sinkhole lake reconstruction from a carbonate island that is proximal to the NASH (Abaco Island, The Bahamas). The reconstruction indicates the northern Bahamas experienced a drought from ∼3300 to ∼2500 Cal yrs BP, which coincides with evidence from other hydroclimate and oceanographic records (e.g., Africa, Caribbean, and South America) for a synchronous southern displacement of the Intertropical Convergence Zoneand North Atlantic Hadley Cell. The specific cause of the hydroclimate change in the northeastern Caribbean region from ∼3300 to 2500 Cal yrs BP was probably coeval southern or western displacement of the NASH, which would have increased northeastern Caribbean exposure to subsiding air from higher altitudes. Article in Journal/Newspaper North Atlantic University of South Florida St. Petersburg: Digital USFSP Nash ENVELOPE(-62.350,-62.350,-74.233,-74.233) Quaternary Science Reviews 186 169 185 |
institution |
Open Polar |
collection |
University of South Florida St. Petersburg: Digital USFSP |
op_collection_id |
ftusouthflorida |
language |
unknown |
topic |
Earth Sciences |
spellingShingle |
Earth Sciences van Hengstum, Peter J. Maale, Gerhard Donnelly, Jeffrey P. Albury, Nancy A. Onac, Bogdan P Sullivan, Richard Winkler, Tyler S. Tamalavage, Anne E. MacDonald, Dana Drought in the Northern Bahamas from 3300 to 2500 Years Ago |
topic_facet |
Earth Sciences |
description |
Intensification and western displacement of the North Atlantic Subtropical High (NASH) is projected for this century, which can decrease Caribbean and southeastern American rainfall on seasonal and annual timescales. However, additional hydroclimate records are needed from the northern Caribbean to understand the long-term behavior of the NASH, and better forecast its future behavior. Here we present a multi-proxy sinkhole lake reconstruction from a carbonate island that is proximal to the NASH (Abaco Island, The Bahamas). The reconstruction indicates the northern Bahamas experienced a drought from ∼3300 to ∼2500 Cal yrs BP, which coincides with evidence from other hydroclimate and oceanographic records (e.g., Africa, Caribbean, and South America) for a synchronous southern displacement of the Intertropical Convergence Zoneand North Atlantic Hadley Cell. The specific cause of the hydroclimate change in the northeastern Caribbean region from ∼3300 to 2500 Cal yrs BP was probably coeval southern or western displacement of the NASH, which would have increased northeastern Caribbean exposure to subsiding air from higher altitudes. |
format |
Article in Journal/Newspaper |
author |
van Hengstum, Peter J. Maale, Gerhard Donnelly, Jeffrey P. Albury, Nancy A. Onac, Bogdan P Sullivan, Richard Winkler, Tyler S. Tamalavage, Anne E. MacDonald, Dana |
author_facet |
van Hengstum, Peter J. Maale, Gerhard Donnelly, Jeffrey P. Albury, Nancy A. Onac, Bogdan P Sullivan, Richard Winkler, Tyler S. Tamalavage, Anne E. MacDonald, Dana |
author_sort |
van Hengstum, Peter J. |
title |
Drought in the Northern Bahamas from 3300 to 2500 Years Ago |
title_short |
Drought in the Northern Bahamas from 3300 to 2500 Years Ago |
title_full |
Drought in the Northern Bahamas from 3300 to 2500 Years Ago |
title_fullStr |
Drought in the Northern Bahamas from 3300 to 2500 Years Ago |
title_full_unstemmed |
Drought in the Northern Bahamas from 3300 to 2500 Years Ago |
title_sort |
drought in the northern bahamas from 3300 to 2500 years ago |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2018 |
url |
https://digitalcommons.usf.edu/geo_facpub/1908 https://doi.org/10.1016/j.quascirev.2018.02.014 |
long_lat |
ENVELOPE(-62.350,-62.350,-74.233,-74.233) |
geographic |
Nash |
geographic_facet |
Nash |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
School of Geosciences Faculty and Staff Publications |
op_relation |
https://digitalcommons.usf.edu/geo_facpub/1908 doi:10.1016/j.quascirev.2018.02.014 https://doi.org/10.1016/j.quascirev.2018.02.014 |
op_doi |
https://doi.org/10.1016/j.quascirev.2018.02.014 |
container_title |
Quaternary Science Reviews |
container_volume |
186 |
container_start_page |
169 |
op_container_end_page |
185 |
_version_ |
1772817063235026944 |