Sponsor
This research was funded by the US Army Corps of Engineers (agreement no. W9127N-14-2-0015; S. Talke, PI), the NSF (Career Award 1455350; PI Talke), NASA’s Research Opportunities in Space and Earth Science ROSES-2012 (grant NNX14AD48G; Kushnir, PI), and a Provost’s Doctoral Fellowship, Stevens Institute of Technology.
Published In
Journal of Marine Science and Engineering
Document Type
Article
Publication Date
2019
Subjects
Sediment transport -- Analysis, Estuarine hydrology
Abstract
Wind-induced sea level blowouts, measured as negative storm surge or extreme low water (ELW), produce public safety hazards and impose economic costs (e.g., to shipping). In this paper, we use a regional hydrodynamic numerical model to test the effect of historical environmental change and the time scale, direction, and magnitude of wind forcing on negative and positive surge events in the New York Harbor (NYH). Environmental sensitivity experiments show that dredging of shipping channels is an important factor affecting blowouts while changing ice cover and removal of other roughness elements are unimportant in NYH. Continuously measured water level records since 1860 show a trend towards smaller negative surge magnitudes (measured minus predicted water level) but do not show a significant change to ELW magnitudes after removing the sea-level trend. Model results suggest that the smaller negative surges occur in the deeper, dredged modern system due to a reduced tide-surge interaction, primarily through a reduced phase shift in the predicted tide. The sensitivity of surge to wind direction changes spatially with remote wind effects dominating local wind effects near NYH. Convergent coastlines that amplify positive surges also amplify negative surges, a process we term inverse coastal funneling.
Locate the Document
DOI
10.3390/jmse7050160
Persistent Identifier
https://archives.pdx.edu/ds/psu/28805
Citation Details
Gurumurthy, P., Orton, P. M., Talke, S. A., Georgas, N., & Booth, J. F. (2019). Mechanics and Historical Evolution of Sea Level Blowouts in New York Harbor. Journal of Marine Science and Engineering, 7(5), 160.
Description
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).