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Articles 1 - 8 of 8
Full-Text Articles in Hydraulic Engineering
Assessment Of Surface Area Application Ratios For Beach Sand Treated Via Surface Percolated Micp-Bioslurry For Erosion Mitigation, Connor J. Marlin
Assessment Of Surface Area Application Ratios For Beach Sand Treated Via Surface Percolated Micp-Bioslurry For Erosion Mitigation, Connor J. Marlin
UNF Graduate Theses and Dissertations
Rapid shoreline erosion associated with sea-level rise is an ongoing threat to coastal infrastructure. Traditional stabilization techniques, such as revetments, seawalls, and periodic nourishment, often prove costly, ecologically disruptive, or provide only temporary protection. Microbially Induced Calcite Precipitation (MICP) and its operational variant, bioslurry, present a biologically inspired alternative capable of forming a cemented surface crust that reduces soil erodibility. Previous laboratory studies typically prescribed a solution dosage as a percentage of pore volume (%PV). While geotechnically sound, this metric is poorly suited to field deployment across a large area. This thesis evaluates surface-area-based dosing (L/m²) as the primary dosage …
Development Of Erosion Functions For Micp-Treated Beach Sand, Saeed Booshi
Development Of Erosion Functions For Micp-Treated Beach Sand, Saeed Booshi
UNF Graduate Theses and Dissertations
This thesis investigates the effectiveness of microbially-induced calcium carbonate precipitation (MICP) using the recently introduced bioslurry treatment method via surface percolation. To simulate realistic water forcing conditions, a piston-style erosion rate testing apparatus, specifically the Florida Department of Transportation Sediment Erosion Rate Flume, was used. Initial tests conducted at a high shear stress of 42 Pa revealed that a combination of 15% bioslurry and 85% cementation solution exhibited the strongest erosion resistance when compared to other ratios between bioslurry and cementation solution. Subsequent experiments focused on separating the specimen into a "loose" part and a “surface crust,” with shear stresses …
An Accurate And Efficient Methodology To Obtain Surges For Risk Analyses For The Coast Of Bangladesh, A S M Alauddin Al Azad
An Accurate And Efficient Methodology To Obtain Surges For Risk Analyses For The Coast Of Bangladesh, A S M Alauddin Al Azad
UNF Graduate Theses and Dissertations
Bangladesh is one of the worst affected countries in the world in terms of tropical cyclone and storm surge effects. Until now, most of the research on annual exceedance of flood elevation for the coast of Bangladesh was based upon historical cyclone tracks along the coast. One of the major constraints of using historical tracks or tide gauge data to determine the annual exceedance of surge elevation is that the available sample size is often inadequate to capture the broad range of storm characteristics over the geographic region of interest. Over the years, several methods have been developed to increase …
Estimating A Range Of Flow Rates Resulting From Extreme Storm Events Within The Wekiva River Watershed Through Statistical Testing And Modeling, Wesley K. Koning
Estimating A Range Of Flow Rates Resulting From Extreme Storm Events Within The Wekiva River Watershed Through Statistical Testing And Modeling, Wesley K. Koning
UNF Graduate Theses and Dissertations
The middle portion of the St. Johns River is located in East-Central Florida, USA. This region of the St. Johns River is increasingly subject to urbanization and conversion of forest areas to agricultural land. Overall, these changes mean that future flood events in the area could adversely impact local citizens. Therefore, the examination of extreme flood events and resiliency to such events is critical. The purpose of this preliminary study is to explore a range of practical applications to estimate extreme flood flows at watercourses within the Middle St. Johns River Basin, focusing specifically upon the Wekiva River sub-basin. The …
Comparison Of Hydrologic Model Performance Statistics Using Thiessen Polygon Rain Gauge And Nexrad Precipitation Input Methods At Different Watershed Spatial Scales And Rainfall Return Frequencies, Amanda E. Tancreto
UNF Graduate Theses and Dissertations
As hydrological computer modeling software continues to increase in complexity, the need for further understanding of the value of different model input datasets becomes apparent. Frequently used precipitation model input include rain gauge data and next-generation radar–based (NEXRAD) rainfall data. Rain gauge data are usually interpolated across a model domain using various methods including the Thiessen Polygon methodology, which may be data-sparse in some areas and overly data-dense in others. However, rain gauge data are generally very easy to use in hydrologic model development, often requiring little to no data processing. NEXRAD data have the potential to improve hydrologic runoff …
Investigation Into The Relationship Between Hurricane Storm Parameters And Damage, Jeremy S. Young
Investigation Into The Relationship Between Hurricane Storm Parameters And Damage, Jeremy S. Young
UNF Graduate Theses and Dissertations
“Economic damage, such as damage to property and infra-structure, from hurricane surges depends on two factors 1) the depth of coastal inundation and 2) the area covered by the surge” (Irish et. al 2007). Typically, damage estimates are developed after hurricanes have dissipated. To have the ability to predict hurricane damage in advance based upon various physical parameters would be a technical advance that could aid vulnerable coastal communities with hurricane planning. This thesis advances this goal forward by relating “Total Normalized Damage” to “Surge Scale” along with other key parameters. In this thesis Total Normalized Damages are compared to …
Sun, Sand And Water: A History Of The Jacksonville District U.S. Army Corps Of Engineers 1821-1975, George E. Buker
Sun, Sand And Water: A History Of The Jacksonville District U.S. Army Corps Of Engineers 1821-1975, George E. Buker
Books
A history of the Jacksonville district of the U. S. Army Corp of Engineers and their challenges to develop Jacksonville as a viable harbor and intracoastal waterways from 1821-1975
Waterways: Comprehensive Regional Plan Series Report Four, East Central Florida Regional Planning Council
Waterways: Comprehensive Regional Plan Series Report Four, East Central Florida Regional Planning Council
City and Regional Planning -- Florida
A plan to make use of the lakes, rivers, canals, and oceans for commerce and other development