The Trouble With The Curve: Reassessing The Gulf of Mexico Sea-Level Rise Model

Author(s): Shawn Joy

Year: 2018


During last glacial episode, a massive amount of water was locked within ice sheets, resulting in a reduction in global sea-levels by 134 meters. The reintroduction of freshwater into the oceans radically changed global sea-levels and littoral landscapes. Over the last 20,000 years, approximately 15-20 million km2 of landscape has been submerged worldwide. Sea-level rise explains the rarity of glacial period coastal archaeological sites. Understanding Florida’s Paleoindians’ interactions with the coastal environment requires an accurate sea-level curve for the Gulf of Mexico. The Balsillie and Donoghue (2004) sea-level curve has been the standard model for oceanic transgression in the Gulf for over a decade. Yet, when compared to global sea-level curves, there are discontinuities within their model. This research will address the issues with Balsillie and Donoghue's (2004) curve, introduce new data and methodologies to enhance the Gulf of Mexico sea-level curve, and improve distribution modeling for submerged archaeological sites.  

Cite this Record

The Trouble With The Curve: Reassessing The Gulf of Mexico Sea-Level Rise Model. Shawn Joy. Presented at Society for Historical Archaeology, Albuquerque, NM. 2018 ( tDAR id: 441859)

Spatial Coverage

min long: -129.199; min lat: 24.495 ; max long: -66.973; max lat: 49.359 ;

Individual & Institutional Roles

Contact(s): Society for Historical Archaeology

Record Identifiers

PaperId(s): 549