Effects of seawater Sr/Ca on coral paleothermometry in the Florida Keys and Virgin Islands revealed by multi-year continuous monitoring
| dc.contributor.advisor | Kilbourne, Kelly H | en_US |
| dc.contributor.advisor | Schijf, Johan | en_US |
| dc.contributor.author | Hughes, Hunter Passman | en_US |
| dc.contributor.department | Marine-Estuarine-Environmental Sciences | en_US |
| dc.contributor.publisher | Digital Repository at the University of Maryland | en_US |
| dc.contributor.publisher | University of Maryland (College Park, Md.) | en_US |
| dc.date.accessioned | 2021-02-13T06:30:44Z | |
| dc.date.available | 2021-02-13T06:30:44Z | |
| dc.date.issued | 2020 | en_US |
| dc.description.abstract | Coral skeletal Sr/Ca is a widely applied proxy indicator for tropical sea surface temperature (SST) because the elemental ratio in coral aragonite is influenced by both SST and seawater Sr/Ca. Application of the methodology assumes that seawater Sr/Ca is a constant in coral reef environments, and the ratio can be used to solve for paleotemperatures based upon an established coral Sr/Ca – SST relationship. This study tests that assumption by documenting seawater Sr/Ca variability in the Florida Keys and in the U.S. and British Virgin Islands using continuous osmotic pumps. Samples are analyzed for Sr/Ca using a novel method via Inductively Coupled Plasma – Atomic Emission Spectrometry. While mean seawater Sr/Ca did not vary significantly between sites, all sites exhibited significant annual variability (~0.5 – 0.1 mmol/mol), with the greatest variability observed in locations most impacted by freshwater discharge. These findings correspond to large temperature offsets (>2 degrees Celsius) in standard coral Sr/Ca-based SST reconstructions. | en_US |
| dc.identifier | https://doi.org/10.13016/s6bo-hxpk | |
| dc.identifier.uri | http://hdl.handle.net/1903/26699 | |
| dc.language.iso | en | en_US |
| dc.subject.pqcontrolled | Paleoclimate science | en_US |
| dc.subject.pqcontrolled | Chemical oceanography | en_US |
| dc.title | Effects of seawater Sr/Ca on coral paleothermometry in the Florida Keys and Virgin Islands revealed by multi-year continuous monitoring | en_US |
| dc.type | Thesis | en_US |
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