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  • Age, 14C AMS; Age, 14C calibrated; Age, comment; Age, dated; Age, dated material; Age, dated standard deviation; Calendar age; DEPTH, sediment/rock; Elevation of event; Event label; Florida Strait; GC; Gravity corer; KN166-2; Knorr; KNR166-2; KNR166-2-127; KNR166-2-132; KNR166-2-26; KNR166-2-26JPC; KNR166-2-29; KNR166-2-29JPC; KNR166-2-31; KNR166-2-31JPC; KNR166-2-73; KNR166-2-73GGC; Latitude of event; Longitude of event; PC; Piston corer  (1)
  • Age, 14C AMS; Age, 14C calibrated; Age, dated; Age, dated standard deviation; Calendar age; Calendar age, standard deviation; DEPTH, sediment/rock; Florida Strait; KN166-2; Knorr; KNR166-2; KNR166-2-51; Laboratory code/label; PC; Piston corer  (1)
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  • 1
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    (Table S1) Age determination of sediment core KNR166-2_51
    PANGAEA
    In:  Supplement to: Schmidt, Matthew W; Weinlein, William A; Marcantonio, Franco; Lynch-Stieglitz, Jean (2012): Solar forcing of Florida Straits surface salinity during the early Holocene. Paleoceanography, 27(3), PA3204, https://doi.org/10.1029/2012PA002284
    Details
    Publication Date: 2023-06-27
    Description: Previous studies showed that sea surface salinity (SSS) in the Florida Straits as well as Florida Current transport covaried with changes in North Atlantic climate over the past two millennia. However, little is known about earlier Holocene hydrographic variability in the Florida Straits. Here, we combine Mg/Ca-paleothermometry and stable oxygen isotope measurements on the planktonic foraminifera Globigerinoides ruber (white variety) from Florida Straits sediment core KNR166-2 JPC 51 (24° 24.70' N, 83° 13.14' W, 198 m deep) to reconstruct a high-resolution (~25 yr/sample) early to mid Holocene record of sea surface temperature and d18OSW (a proxy for SSS) variability. After removing the influence of global d18OSW change due to continental ice volume variability, we find that early Holocene SSS enrichments are associated with increased evaporation/precipitation ratios in the Florida Straits during periods of reduced solar forcing, increased ice rafted debris in the North Atlantic and the development of more permanent El Niño-like conditions in the eastern equatorial Pacific. When considered with previous high-resolution reconstructions of Holocene tropical atmospheric circulation changes, our results provide evidence that variations in solar forcing over the early Holocene had a significant impact on the global tropical hydrologic cycle.
    Keywords: Age, 14C AMS; Age, 14C calibrated; Age, dated; Age, dated standard deviation; Calendar age; Calendar age, standard deviation; DEPTH, sediment/rock; Florida Strait; KN166-2; Knorr; KNR166-2; KNR166-2-51; Laboratory code/label; PC; Piston corer
    Type: Dataset
    Format: text/tab-separated-values, 35 data points
    Location Call Number Limitation Availability
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    DATA PANGAEA
  • 2
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    (Table 2) Age determination of Florida Straits sediment cores
    PANGAEA
    In:  Supplement to: Lynch-Stieglitz, Jean; Schmidt, Matthew W; Curry, William B (2011): Evidence from the Florida Straits for Younger Dryas ocean circulation changes. Paleoceanography, 26(1), PA1205, https://doi.org/10.1029/2010PA002032
    Details
    Publication Date: 2023-06-27
    Description: The waters passing through the Florida Straits today reflect both the western portion of the wind-driven subtropical gyre and the northward flow of the upper waters which cross the equator, compensating North Atlantic Deep Water export as part of the large-scale Atlantic meridional overturning circulation. It has been postulated from various lines of evidence that the overturning circulation was weaker during the Younger Dryas cold event of the last deglaciation. We show here that the contrast in the oxygen isotopic composition of benthic foraminiferal tests across the Florida Current is reduced during the Younger Dryas. This most likely reflects a decrease in the density gradient across the channel and a decrease in the vertical shear of the Florida Current. This reduced shear is consistent with the postulated reduction in the Atlantic meridional overturning circulation. We find that the onset of this change in density structure and flow at the start of the Younger Dryas is very abrupt, occurring in less than 70 years.
    Keywords: Age, 14C AMS; Age, 14C calibrated; Age, comment; Age, dated; Age, dated material; Age, dated standard deviation; Calendar age; DEPTH, sediment/rock; Elevation of event; Event label; Florida Strait; GC; Gravity corer; KN166-2; Knorr; KNR166-2; KNR166-2-127; KNR166-2-132; KNR166-2-26; KNR166-2-26JPC; KNR166-2-29; KNR166-2-29JPC; KNR166-2-31; KNR166-2-31JPC; KNR166-2-73; KNR166-2-73GGC; Latitude of event; Longitude of event; PC; Piston corer
    Type: Dataset
    Format: text/tab-separated-values, 350 data points
    Location Call Number Limitation Availability
    BibTip Others were also interested in ...
    DATA PANGAEA
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