Anthropogenic Controls on Overwash Deposition: Evidence and Consequences Public Deposited
- Last Modified
- March 19, 2019
- Creator
-
Rogers, Laura
- Affiliation: College of Arts and Sciences, Department of Geological Sciences
- Abstract
- Accelerated sea-level rise and potential future increases in storminess due to climate change will threaten the vitality of barrier islands by lowering their relative elevation and altering overwash frequency. High-density development may further increase island vulnerability by restricting delivery of overwash to the subaerial island. I analyzed pre- and post-Hurricane Sandy (2012) LiDAR surveys of the New Jersey coast to assess human influence. I compared natural environments to two developed environments (commercial and residential) using shore-perpendicular topographic profiles. The volume of overwash delivered to residential and commercial areas is reduced by 40% and 90%, respectively, of that delivered to the natural environment. I use this analysis and an exploratory barrier island evolution model to assess long-term impacts of anthropogenic structures. Simulations suggest natural barrier islands may persist under a range of likely future sea-level rise scenarios (7–13 mm/yr) whereas developed barrier islands will have a long-term tendency toward drowning.
- Date of publication
- May 2015
- Keyword
- Subject
- DOI
- Identifier
- Resource type
- Rights statement
- In Copyright
- Advisor
- Moore, Laura
- Pavelsky, Tamlin
- Rodriguez, Antonio
- Degree
- Master of Science
- Degree granting institution
- University of North Carolina at Chapel Hill Graduate School
- Graduation year
- 2015
- Language
- Publisher
- Place of publication
- Chapel Hill, NC
- Access
- There are no restrictions to this item.
- Parents:
This work has no parents.
Items
Thumbnail | Title | Date Uploaded | Visibility | Actions |
---|---|---|---|---|
|
Rogers_unc_0153M_15496.pdf | 2019-04-10 | Public |
|