Design and Implementation of an Ocean Observing System: WAVCIS (Wave-Current-Surge Information System) and Its Application to the Louisiana Coast

WAVCIS (Wave-Current-Surge Information System for Coastal Louisiana) was designed to measure meteorological and hydrodynamic phenomena along the Louisiana coast. The information measured includes waves, currents, water depth, surge, turbidity, salinity and meteorological conditions. WAVCIS collects...

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Bibliographic Details
Main Author: Zhang, Xiongping
Other Authors: Shih-Ang (S.A.) Hsu
Format: Others
Language:en
Published: LSU 2003
Subjects:
Online Access:http://etd.lsu.edu/docs/available/etd-0708103-012004/
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spelling ndltd-LSU-oai-etd.lsu.edu-etd-0708103-0120042013-01-07T22:48:39Z Design and Implementation of an Ocean Observing System: WAVCIS (Wave-Current-Surge Information System) and Its Application to the Louisiana Coast Zhang, Xiongping Geography & Anthropology WAVCIS (Wave-Current-Surge Information System for Coastal Louisiana) was designed to measure meteorological and hydrodynamic phenomena along the Louisiana coast. The information measured includes waves, currents, water depth, surge, turbidity, salinity and meteorological conditions. WAVCIS collects data and transfers it back to the data processing laboratory at LSU through wireless communication. The data undergo post-processing and archiving. Users can access the real-time or archived information through the World Wide Web. This dissertation utilized the information provided by WAVCIS stations and NDBC buoys during Hurricane Lili and Tropical Storm to examine temporal and spatial variations of storm induced meteorological and oceanographic dynamics. The results show that waves during Hurricane Lili ranged from 1.8 meters in Terrebonne Bay, 6.2 meters offshore at a depth of 20 meters and 12 meters in Central Gulf of Mexico. The track of Hurricane Lili passed over CSI 3 where the peak in significant wave height reached 2.7 meters. The maximum current speeds near sea surface and near bottom generated by Hurricane Lili were 1.8 m/s and 1.1 m/s respectively. During the peak of the storm the water column was dominated by a northwest current. Currents were initially impacted by the storms when they encountered the continental shelf. Within approximately twice the radius of maximum wind (Rw) during Hurricane Lili, the current measured by an ADCP (Acoustic Doppler Current Profiler) exhibited an almost perfect logarithmic profile extending to near the sea surface from the bottom. The range of the estimated shear velocity during the passage of Hurricane Lili was 5-12.5 cm/s. Storm wave energy dumping occurred along the muddy shelf in western Louisiana. Waves generated by Hurricane Lili and Tropical Storm Isidore showed considerable difference in both time and space domains. Wave spectra for Tropical Storm Isidore showed distinct peaks for both swell and wind-driven waves. The wave spectra for Hurricane Lili demonstrated complicated multiple peaks throughout the entire frequency domain. Swells with longer periods tended to survive longer in the space domain and shorter in the time domain. Hurricane Lili generated 1.4 meters of storm surge at CSI 3. The surges appeared lower than modeled estimates. Shih-Ang (S.A.) Hsu Steven Namikas DeWitt Braud Michael Leitner Nina S.-N. Lam Gregory W. Stone LSU 2003-07-08 text application/pdf http://etd.lsu.edu/docs/available/etd-0708103-012004/ http://etd.lsu.edu/docs/available/etd-0708103-012004/ en unrestricted I hereby grant to LSU or its agents the right to archive and to make available my thesis or dissertation in whole or in part in the University Libraries in all forms of media, now or hereafter known. I retain all proprietary rights, such as patent rights. I also retain the right to use in future works (such as articles or books) all or part of this thesis or dissertation.
collection NDLTD
language en
format Others
sources NDLTD
topic Geography & Anthropology
spellingShingle Geography & Anthropology
Zhang, Xiongping
Design and Implementation of an Ocean Observing System: WAVCIS (Wave-Current-Surge Information System) and Its Application to the Louisiana Coast
description WAVCIS (Wave-Current-Surge Information System for Coastal Louisiana) was designed to measure meteorological and hydrodynamic phenomena along the Louisiana coast. The information measured includes waves, currents, water depth, surge, turbidity, salinity and meteorological conditions. WAVCIS collects data and transfers it back to the data processing laboratory at LSU through wireless communication. The data undergo post-processing and archiving. Users can access the real-time or archived information through the World Wide Web. This dissertation utilized the information provided by WAVCIS stations and NDBC buoys during Hurricane Lili and Tropical Storm to examine temporal and spatial variations of storm induced meteorological and oceanographic dynamics. The results show that waves during Hurricane Lili ranged from 1.8 meters in Terrebonne Bay, 6.2 meters offshore at a depth of 20 meters and 12 meters in Central Gulf of Mexico. The track of Hurricane Lili passed over CSI 3 where the peak in significant wave height reached 2.7 meters. The maximum current speeds near sea surface and near bottom generated by Hurricane Lili were 1.8 m/s and 1.1 m/s respectively. During the peak of the storm the water column was dominated by a northwest current. Currents were initially impacted by the storms when they encountered the continental shelf. Within approximately twice the radius of maximum wind (Rw) during Hurricane Lili, the current measured by an ADCP (Acoustic Doppler Current Profiler) exhibited an almost perfect logarithmic profile extending to near the sea surface from the bottom. The range of the estimated shear velocity during the passage of Hurricane Lili was 5-12.5 cm/s. Storm wave energy dumping occurred along the muddy shelf in western Louisiana. Waves generated by Hurricane Lili and Tropical Storm Isidore showed considerable difference in both time and space domains. Wave spectra for Tropical Storm Isidore showed distinct peaks for both swell and wind-driven waves. The wave spectra for Hurricane Lili demonstrated complicated multiple peaks throughout the entire frequency domain. Swells with longer periods tended to survive longer in the space domain and shorter in the time domain. Hurricane Lili generated 1.4 meters of storm surge at CSI 3. The surges appeared lower than modeled estimates.
author2 Shih-Ang (S.A.) Hsu
author_facet Shih-Ang (S.A.) Hsu
Zhang, Xiongping
author Zhang, Xiongping
author_sort Zhang, Xiongping
title Design and Implementation of an Ocean Observing System: WAVCIS (Wave-Current-Surge Information System) and Its Application to the Louisiana Coast
title_short Design and Implementation of an Ocean Observing System: WAVCIS (Wave-Current-Surge Information System) and Its Application to the Louisiana Coast
title_full Design and Implementation of an Ocean Observing System: WAVCIS (Wave-Current-Surge Information System) and Its Application to the Louisiana Coast
title_fullStr Design and Implementation of an Ocean Observing System: WAVCIS (Wave-Current-Surge Information System) and Its Application to the Louisiana Coast
title_full_unstemmed Design and Implementation of an Ocean Observing System: WAVCIS (Wave-Current-Surge Information System) and Its Application to the Louisiana Coast
title_sort design and implementation of an ocean observing system: wavcis (wave-current-surge information system) and its application to the louisiana coast
publisher LSU
publishDate 2003
url http://etd.lsu.edu/docs/available/etd-0708103-012004/
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