Open Access. Powered by Scholars. Published by Universities.®
Oceanography and Atmospheric Sciences and Meteorology Commons™
Open Access. Powered by Scholars. Published by Universities.®
- Discipline
-
- Earth Sciences (2)
- Oceanography (2)
- Applied Mathematics (1)
- Applied Statistics (1)
- Atmospheric Sciences (1)
-
- Climate (1)
- Data Science (1)
- Dynamic Systems (1)
- Environmental Sciences (1)
- Geology (1)
- Geomorphology (1)
- Hydrology (1)
- Longitudinal Data Analysis and Time Series (1)
- Meteorology (1)
- Non-linear Dynamics (1)
- Other Oceanography and Atmospheric Sciences and Meteorology (1)
- Sedimentology (1)
- Statistical Methodology (1)
- Statistical Models (1)
- Statistics and Probability (1)
Articles 1 - 3 of 3
Full-Text Articles in Oceanography and Atmospheric Sciences and Meteorology
Numerical And Field Study Of Tidal And Subtidal Dynamics In A Bar-Built Estuary: Barataria Bay, Gulf Of Mexico, Ali Reza Payandeh
Numerical And Field Study Of Tidal And Subtidal Dynamics In A Bar-Built Estuary: Barataria Bay, Gulf Of Mexico, Ali Reza Payandeh
LSU Doctoral Dissertations
This study investigated tidal and subtidal dynamics of water level, currents, and suspended sediment concentration (SSC) in Barataria Bay, a shallow bar-built estuary of the Northern Gulf of Mexico. First, the local and remote wind forcing contribution on subtidal water level and current variability were examined using three different methods: (i) statistical analysis of observed data, (ii) an analytical model and (iii) a 2-D barotropic numerical model. Results suggested that the remote and local wind effects were equally important at the bay mouth, however local winds were the dominant forcing driver inside the bay. The amplitudes of subtidal fluctuations induced …
Characterizing The Northern Hemisphere Circumpolar Vortex Through Space And Time, Nazla Bushra
Characterizing The Northern Hemisphere Circumpolar Vortex Through Space And Time, Nazla Bushra
LSU Doctoral Dissertations
This hemispheric-scale, steering atmospheric circulation represented by the circumpolar vortices (CPVs) are the middle- and upper-tropospheric wind belts circumnavigating the poles. Variability in the CPV area, shape, and position are important topics in geoenvironmental sciences because of the many links to environmental features. However, a means of characterizing the CPV has remained elusive. The goal of this research is to (i) identify the Northern Hemisphere CPV (NHCPV) and its morphometric characteristics, (ii) understand the daily characteristics of NHCPV area and circularity over time, (iii) identify and analyze spatiotemporal variability in the NHCPV’s centroid, and (iv) analyze how CPV features relate …
Hydro-Morphodynamics Of Sandy Coastal Embayments, Shamim Murshid
Hydro-Morphodynamics Of Sandy Coastal Embayments, Shamim Murshid
LSU Doctoral Dissertations
This dissertation investigates the hydro-morphodynamics of two major components of a sandy coastal environment: tidal inlets and embayment shorelines. In the first study, I focused on the evolution of inlet geometry by compiling and analyzing a database with 226 inlets worldwide with a special attention given to their width to depth ratio (or aspect ratio). I found that the aspect ratio has a weak dependency on tidal range and wave height, and they lie in different ranges for three types of tidal inlets: engineered, natural single-thread, and natural compound. I also developed a 2D hydro-morphodynamic model of an idealized barrier-inlet …