Document Type
Article
Department/Program
Virginia Institute of Marine Science
Publication Date
2021
Journal
Natural Hazards And Earth System Sciences
Volume
21
First Page
1703
Last Page
1719
Abstract
We study the compound flooding processes that occurred in Hurricane Florence (2018), which was accompanied by heavy precipitation, using a 3D creek-to-ocean hydrodynamic model. We examine the important role played by barrier islands in the observed compound surges in the coastal watershed. Locally very high resolution is used in some watershed areas in order to resolve small features that turn out to be critical for capturing the observed high watermarks locally. The wave effects are found to be significant near barrier islands and have contributed to some observed over-toppings and breaches. Results from sensitivity tests applying each of the three major forcing factors (oceanic, fluvial, and pluvial)separately are succinctly summarized in a “dominance map” that highlights significant compound effects in most of the affected coastal watersheds, estuaries,and back bays behind the barrier islands. Operational fore-casts based on the current model are being set up at NOAA to help coastal resource and emergency managers with disaster planning and mitigation efforts.
DOI
doi: 10.5194/nhess-21-1703-2021
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Ye, Fei; Huang, Wei; Zhang, Yinglong J.; and et al, A cross-scale study for compound flooding processes during Hurricane Florence (2021). Natural Hazards And Earth System Sciences, 21, 1703-1719.
doi: 10.5194/nhess-21-1703-2021
