Journal
JOURNAL OF MARINE SYSTEMS
Volume 169, Issue -, Pages 1-10Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmarsys.2017.01.008
Keywords
Hydrodynamics; Currents; Drag coefficient; Anisotropy; Data assimilation; Nudging
Funding
- Florida Sea Grant (FSG) [NA100AR4170079]
- St. Johns River Economic Impact Study: Phase 1 - Ecosystem Services Valuation project from the St. Johns River Water Management District (SJRWMD) [014-010]
Ask authors/readers for more resources
A rich dataset of time-and space -varying velocity measurements for a macrotidal estuary was used in the development of a vector-based formulation of bottom roughness in the Advanced Circulation (ADCIRC) model. The updates to the parallel code of ADCIRC to include directionally based drag coefficient are briefly discussed in the paper, followed by an application of the data assimilation (nudging analysis) to the lower St. Johns River (northeastern Florida) for parameter estimation of anisotropic Manning's n coefficient. The method produced converging estimates of Manning's n values for ebb (0.0290) and flood (0.0219) when initialized with uniform and isotropic setting of 0.0200. Modeled currents, water levels and flows were improved at observation locations where data were assimilated as well as at monitoring locations where data were not assimilated, such that the method increases model skill locally and non-locally with regard to the data locations. The methodology is readily transferrable to other circulation/estuary models, given pre-developed quality mesh/grid and adequate data available for assimilation. (C) 2017 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available