Abstract

Abstract Very high subsidence rates are routinely documented within the Pontchartrain Basin and coastal Louisiana. Subsidence promotes land loss and degrades the integrity of infrastructure and ecosystem health. Despite its vast impact on the regional landscape, the precise causes of the subsidence are not well understood; contemporary research attributes measurements of subsidence to many different processes. Because individual subsidence studies often focus on a singular subsidence process and use alternative methodologies, results may not be comparable with or complementary to the results of other studies, hindering attempts to synthesize the collective body of research into a comprehensive regional understanding. This article presents a review of contemporary subsidence research to define the most influential processes in coastal Louisiana. The processes are grouped into six categories: tectonics, Holocene sediment compaction, sediment loading, glacial isostatic adjustment, anthropogenic fluid withdra...

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