Millennial- to Century-Scale Variability in Gulf of Mexico Holocene Climate Records
Proxy records from two piston cores in the Gulf of Mexico (GOM) provide a detailed (50–100 year resolution) record of climate variability over the last 14,000 years. Longâ€term (millennialâ€scale) trends and changes are related to the transition from glacial to interglacial conditions and movement...
Published in: | Paleoceanography |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
Digital Commons @ University of South Florida
2003
|
Subjects: | |
Online Access: | https://digitalcommons.usf.edu/msc_facpub/112 https://doi.org/10.1029/2002PA000868 https://digitalcommons.usf.edu/context/msc_facpub/article/1111/viewcontent/Poore_et_al_2003_Paleoceanography.pdf |
id |
ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-1111 |
---|---|
record_format |
openpolar |
spelling |
ftunisfloridatam:oai:digitalcommons.usf.edu:msc_facpub-1111 2024-09-15T18:12:29+00:00 Millennial- to Century-Scale Variability in Gulf of Mexico Holocene Climate Records Poore, R. Z. Dowsett, H. J. Verardo, S. Quinn, Terrence M. 2003-06-11T07:00:00Z application/pdf https://digitalcommons.usf.edu/msc_facpub/112 https://doi.org/10.1029/2002PA000868 https://digitalcommons.usf.edu/context/msc_facpub/article/1111/viewcontent/Poore_et_al_2003_Paleoceanography.pdf unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/112 doi:10.1029/2002PA000868 https://digitalcommons.usf.edu/context/msc_facpub/article/1111/viewcontent/Poore_et_al_2003_Paleoceanography.pdf default Marine Science Faculty Publications Holocene Gulf of Mexico millennial- to century-scale climate variability solar forcing Life Sciences Marine Biology article 2003 ftunisfloridatam https://doi.org/10.1029/2002PA000868 2024-08-23T08:09:14Z Proxy records from two piston cores in the Gulf of Mexico (GOM) provide a detailed (50–100 year resolution) record of climate variability over the last 14,000 years. Longâ€term (millennialâ€scale) trends and changes are related to the transition from glacial to interglacial conditions and movement of the average position of the Intertropical Convergence Zone (ITCZ) related to orbital forcing. The δ18O of the surfaceâ€dwelling planktic foraminifer Globigerinoides ruber show negative excursions between 14 and 10.2 ka (radiocarbon years) that reflect influx of meltwater into the western GOM during melting of the Laurentide Ice Sheet. The relative abundance of the planktic foraminifer Globigerinoides sacculifer is related to transport of Caribbean water into the GOM. Maximum transport of Caribbean surface waters and moisture into the GOM associated with a northward migration of the average position of the ITCZ occurs between about 6.5 and 4.5 ka. In addition, abundance variations of G. sacculifer show centuryâ€scale variability throughout most of the Holocene. The GOM record is consistent with records from other areas, suggesting that centuryâ€scale variability is a pervasive feature of Holocene climate. The frequency of several cycles in the climate records is similar to cycles identified in proxy records of solar variability, indicating that at least some of the centuryâ€scale climate variability during the Holocene is due to external (solar) forcing. Article in Journal/Newspaper Ice Sheet Digital Commons University of South Florida (USF) Paleoceanography 18 2 |
institution |
Open Polar |
collection |
Digital Commons University of South Florida (USF) |
op_collection_id |
ftunisfloridatam |
language |
unknown |
topic |
Holocene Gulf of Mexico millennial- to century-scale climate variability solar forcing Life Sciences Marine Biology |
spellingShingle |
Holocene Gulf of Mexico millennial- to century-scale climate variability solar forcing Life Sciences Marine Biology Poore, R. Z. Dowsett, H. J. Verardo, S. Quinn, Terrence M. Millennial- to Century-Scale Variability in Gulf of Mexico Holocene Climate Records |
topic_facet |
Holocene Gulf of Mexico millennial- to century-scale climate variability solar forcing Life Sciences Marine Biology |
description |
Proxy records from two piston cores in the Gulf of Mexico (GOM) provide a detailed (50–100 year resolution) record of climate variability over the last 14,000 years. Longâ€term (millennialâ€scale) trends and changes are related to the transition from glacial to interglacial conditions and movement of the average position of the Intertropical Convergence Zone (ITCZ) related to orbital forcing. The δ18O of the surfaceâ€dwelling planktic foraminifer Globigerinoides ruber show negative excursions between 14 and 10.2 ka (radiocarbon years) that reflect influx of meltwater into the western GOM during melting of the Laurentide Ice Sheet. The relative abundance of the planktic foraminifer Globigerinoides sacculifer is related to transport of Caribbean water into the GOM. Maximum transport of Caribbean surface waters and moisture into the GOM associated with a northward migration of the average position of the ITCZ occurs between about 6.5 and 4.5 ka. In addition, abundance variations of G. sacculifer show centuryâ€scale variability throughout most of the Holocene. The GOM record is consistent with records from other areas, suggesting that centuryâ€scale variability is a pervasive feature of Holocene climate. The frequency of several cycles in the climate records is similar to cycles identified in proxy records of solar variability, indicating that at least some of the centuryâ€scale climate variability during the Holocene is due to external (solar) forcing. |
format |
Article in Journal/Newspaper |
author |
Poore, R. Z. Dowsett, H. J. Verardo, S. Quinn, Terrence M. |
author_facet |
Poore, R. Z. Dowsett, H. J. Verardo, S. Quinn, Terrence M. |
author_sort |
Poore, R. Z. |
title |
Millennial- to Century-Scale Variability in Gulf of Mexico Holocene Climate Records |
title_short |
Millennial- to Century-Scale Variability in Gulf of Mexico Holocene Climate Records |
title_full |
Millennial- to Century-Scale Variability in Gulf of Mexico Holocene Climate Records |
title_fullStr |
Millennial- to Century-Scale Variability in Gulf of Mexico Holocene Climate Records |
title_full_unstemmed |
Millennial- to Century-Scale Variability in Gulf of Mexico Holocene Climate Records |
title_sort |
millennial- to century-scale variability in gulf of mexico holocene climate records |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2003 |
url |
https://digitalcommons.usf.edu/msc_facpub/112 https://doi.org/10.1029/2002PA000868 https://digitalcommons.usf.edu/context/msc_facpub/article/1111/viewcontent/Poore_et_al_2003_Paleoceanography.pdf |
genre |
Ice Sheet |
genre_facet |
Ice Sheet |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/112 doi:10.1029/2002PA000868 https://digitalcommons.usf.edu/context/msc_facpub/article/1111/viewcontent/Poore_et_al_2003_Paleoceanography.pdf |
op_rights |
default |
op_doi |
https://doi.org/10.1029/2002PA000868 |
container_title |
Paleoceanography |
container_volume |
18 |
container_issue |
2 |
_version_ |
1810450076504424448 |