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http://hdl.handle.net/2122/16823
Authors: | Paniagua-Arroyave, Juan Felipe* Spada, Giorgio* Melini, Daniele* Duque-Trujillo, José F* |
Title: | Holocene relative sea-level changes along the Caribbean and Pacific coasts of northwestern South America | Journal: | Quaternary Research | Publisher: | Cambridge University Press | Issue Date: | 2024 | DOI: | 10.1017/qua.2023.73 | Abstract: | Predicting coastal change depends upon our knowledge of postglacial relative sea-level variability, partly controlled by glacio-isostatic responses to ice-sheet melting. Here, we reconstruct the postglacial relative sea-level changes along the Caribbean and Pacific coasts of northwestern South America by numerically solving the sea-level equation with two scenarios of mantle viscosity: global standard average and high viscosity. Our results with the standard model (applicable to the Pacific coast) agree with earlier studies by indicating a mid-Northgrippian high stand of ~2 m. The high-viscosity simulation (relevant to the Caribbean coast) shows that the transition from far- to intermediate-field influence of the Laurentide Ice Sheet occurs between Manzanillo del Mar and the Gulf of Morrosquillo. South of this location, the Colombian Caribbean coast has exhibited a still stand with a nearly constant Holocene relative sea level. By analyzing our simulations considering sea-level indicators, we argue that tectonics is more prominent than previously assumed, especially along the Caribbean coast. This influence prevents a simplified view of regional relative sea-level changes on the northwestern South American coast. | Description: | All Rights Reserved |
Appears in Collections: | Article published / in press |
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PaniEtAl_2024_QR_NoCopyEditing.pdf | 1.12 MB | Adobe PDF | View/Open |
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