Tidal Datum Changes Induced by Morphological Changes of North Carolina Coastal Inlets

In support of the National Oceanic and Atmospheric Administration’s VDatum program, a new version of a tidal datum product for the North Carolina coastal waters has been developed to replace the initial version released in 2004. Compared with the initial version, the new version used a higher resolu...

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Main Authors: Jindong Wang, Edward Myers
Format: Article
Language:English
Published: MDPI AG 2016-11-01
Series:Journal of Marine Science and Engineering
Subjects:
Online Access:http://www.mdpi.com/2077-1312/4/4/79
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author Jindong Wang
Edward Myers
author_facet Jindong Wang
Edward Myers
author_sort Jindong Wang
collection DOAJ
description In support of the National Oceanic and Atmospheric Administration’s VDatum program, a new version of a tidal datum product for the North Carolina coastal waters has been developed to replace the initial version released in 2004. Compared with the initial version, the new version used a higher resolution grid to cover more areas and incorporated up-to-date tide, bathymetry, and shoreline data. Particularly, the old bathymetry datasets that were collected from the 1930s to the 1970s and were used in the initial version have been replaced by the new bathymetry datasets collected in the 2010s in the new version around five North Carolina inlets. This study aims at evaluating and quantifying tidal datum changes induced by morphological changes over about 40 to 80 years around the inlets. A series of tidal simulations with either the old or new bathymetry datasets used around five inlets were conducted to quantify the consequent tidal datum changes. The results showed that around certain inlets, approximately 10% change in the averaged depth could result in over 30% change in the tidal datum magnitude. Further investigation also revealed that tidal datum changes behind the barrier islands are closely associated with the cross-inlet tidal flux changes.
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spelling doaj.art-df8210795e05464d9b171fbd2c8b4aad2022-12-21T23:05:50ZengMDPI AGJournal of Marine Science and Engineering2077-13122016-11-01447910.3390/jmse4040079jmse4040079Tidal Datum Changes Induced by Morphological Changes of North Carolina Coastal InletsJindong Wang0Edward Myers1Coast Survey Development Laboratory, National Ocean Service, National Oceanic and Atmospheric Administration, 1315 East-West Highway, Silver Spring, MD 20910, USACoast Survey Development Laboratory, National Ocean Service, National Oceanic and Atmospheric Administration, 1315 East-West Highway, Silver Spring, MD 20910, USAIn support of the National Oceanic and Atmospheric Administration’s VDatum program, a new version of a tidal datum product for the North Carolina coastal waters has been developed to replace the initial version released in 2004. Compared with the initial version, the new version used a higher resolution grid to cover more areas and incorporated up-to-date tide, bathymetry, and shoreline data. Particularly, the old bathymetry datasets that were collected from the 1930s to the 1970s and were used in the initial version have been replaced by the new bathymetry datasets collected in the 2010s in the new version around five North Carolina inlets. This study aims at evaluating and quantifying tidal datum changes induced by morphological changes over about 40 to 80 years around the inlets. A series of tidal simulations with either the old or new bathymetry datasets used around five inlets were conducted to quantify the consequent tidal datum changes. The results showed that around certain inlets, approximately 10% change in the averaged depth could result in over 30% change in the tidal datum magnitude. Further investigation also revealed that tidal datum changes behind the barrier islands are closely associated with the cross-inlet tidal flux changes.http://www.mdpi.com/2077-1312/4/4/79VDatumtidal datumsmorphological changesinletsNorth Carolina
spellingShingle Jindong Wang
Edward Myers
Tidal Datum Changes Induced by Morphological Changes of North Carolina Coastal Inlets
Journal of Marine Science and Engineering
VDatum
tidal datums
morphological changes
inlets
North Carolina
title Tidal Datum Changes Induced by Morphological Changes of North Carolina Coastal Inlets
title_full Tidal Datum Changes Induced by Morphological Changes of North Carolina Coastal Inlets
title_fullStr Tidal Datum Changes Induced by Morphological Changes of North Carolina Coastal Inlets
title_full_unstemmed Tidal Datum Changes Induced by Morphological Changes of North Carolina Coastal Inlets
title_short Tidal Datum Changes Induced by Morphological Changes of North Carolina Coastal Inlets
title_sort tidal datum changes induced by morphological changes of north carolina coastal inlets
topic VDatum
tidal datums
morphological changes
inlets
North Carolina
url http://www.mdpi.com/2077-1312/4/4/79
work_keys_str_mv AT jindongwang tidaldatumchangesinducedbymorphologicalchangesofnorthcarolinacoastalinlets
AT edwardmyers tidaldatumchangesinducedbymorphologicalchangesofnorthcarolinacoastalinlets