Tides in the Last Interglacial: insights from notch geometry and palaeo tidal 
models in Bonaire, Netherland Antilles

Lorscheid, Thomas; Felis, Thomas; Stocchi, Paolo; Obert, J. Christina; Scholz, Denis; Rovere, Alessio

doi:10.1038/s41598-017-16285-6

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Tides in the Last Interglacial: insights from notch geometry and palaeo tidal models in Bonaire, Netherland Antilles

MPS-Authors

/persons/resource/persons204121

Obert, J. Christina
Climate Geochemistry, Max Planck Institute for Chemistry, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Lorscheid, T., Felis, T., Stocchi, P., Obert, J. C., Scholz, D., & Rovere, A. (2017). Tides in the Last Interglacial: insights from notch geometry and palaeo tidal models in Bonaire, Netherland Antilles. Scientific Reports, 7: 16241. doi:10.1038/s41598-017-16285-6.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002E-9633-E

Abstract

The study of past sea levels relies largely on the interpretation of sea-level indicators. Palaeo tidal notches are considered as one of the most precise sea-level indicators as their formation is closely tied to the local tidal range. We present geometric measurements of modern and palaeo (Marine Isotope Stage (MIS) 5e) tidal notches on Bonaire (southern Caribbean Sea) and results from two tidal simulations, using the present-day bathymetry and a palaeo-bathymetry. We use these two tools to investigate changes in the tidal range since MIS 5e. Our models show that the tidal range changes most significantly in shallow areas, whereas both, notch geometry and models results, suggest that steeper continental shelves, such as the ones bordering the island of Bonaire, are less affected to changes in tidal range in conditions of MIS 5e sea levels. We use our data and results to discuss the importance of considering changes in tidal range while reconstructing MIS 5e sea level histories, and we remark that it is possible to use hydrodynamic modelling and notch geometry as first-order proxies to assess whether, in a particular area, tidal range might have been different in MIS 5e with respect to today.