A5060875124- Coastal and Marine Dynamics
- Aeolian processes and effects
- Coastal wetland ecosystem dynamics
- Tropical and Extratropical Cyclones Research
- Geological formations and processes
- Earthquake and Tsunami Effects
- Tree Root and Stability Studies
- Soil erosion and sediment transport
- Oceanographic and Atmospheric Processes
- Fluid Dynamics Simulations and Interactions
- Remote Sensing and LiDAR Applications
- Ocean Waves and Remote Sensing
- Atmospheric and Environmental Gas Dynamics
- Geology and Paleoclimatology Research
- Coastal and Marine Management
- Marine and Offshore Engineering Studies
- Turtle Biology and Conservation
- Dam Engineering and Safety
- Geological and Geophysical Studies
- Hydrology and Sediment Transport Processes
- Flood Risk Assessment and Management
- Oil Spill Detection and Mitigation
- Underwater Acoustics Research
- Geotechnical Engineering and Soil Stabilization
- earthquake and tectonic studies
Texas A&M University
2016-2025
Texas A&M University at Galveston
2014-2025
Mitchell Institute
2023-2025
United States Army Corps of Engineers
2023
Bureau of Energy
2023
Ocean Energy (Norway)
2023
Delft University of Technology
2017
University of Delaware
2008-2013
Leibniz University Hannover
2010
UNSW Sydney
2008
A broadly accepted paradigm is that vegetation reduces coastal dune erosion. However, we show during an extreme storm event, surprisingly accelerates In 104-m-long beach-dune profile experiments conducted within a flume, discovered while initially creates physical barrier to wave energy, it also (i) decreases run-up, which discontinuities in erosion and accretion patterns across the slope, (ii) increases water penetration into sediment bed, induces its fluidization destabilization, (iii)...
Wave-induced overwash of sand dunes may cause rapid profile changes and possible dune destruction, thus increasing the flood risk landward dunes. Accurate modeling wave processes is therefore essential in predicting evolution during events. However, available field laboratory data are very limited. We measured transport rates for three tests with different initial geometries front a low-crested vertical wall exposed to same conditions flume. In all tests, transition from minor major occurred...
Sigren, J.M.; Figlus, J.; Highfield, W.; Feagin, R.A., and Armitage, A.R., 2018. The effects of coastal dune volume vegetation on storm-induced property damage: Analysis from Hurricane Ike.In response to numerous recent high-profile cases tropical storm hurricane damage communities, there has been increasing attention the protection services provided by ecosystems. However, substantial knowledge gaps exist regarding quantitative economic benefits such services, particularly for vegetated A...
Abstract Beach groundwater and nearshore hydrodynamic data were collected during a field experiment along two dissipative beach transects on Galveston Island, Texas, in the fall of 2023. The monitored beaches serve as nesting habitat for critically endangered Kemp’s ridley sea turtle. Conditions ranged from calm to stormy, with storms occurring experiment, inundating entire up dune toe. Collected include readings pressure loggers submerged foreshore mounted wells backshore, wave buoys about...
Almarshed, B.; Figlus, J.; Miller, J., and Verhagen, H.J., 2020. Innovative coastal risk reduction through hybrid design: Combining sand cover structural defenses. Journal of Coastal Research, 36(1), 174–188. Coconut Creek (Florida), ISSN 0749-0208.Worldwide, dunes hard structures help to minimize loss lives property from storm impact flooding along or behind coastlines. Both have their benefits shortfalls in terms protective capacity, cost, flexibility, systems. these two inherently...
Coastal dunes can protect communities and infrastructure against storm surge wave attack. They provide a natural barrier of granular material that erodes during conditions dissipates energy in the process. Vegetation is abundantly present most coastal may enhance capability dune to withstand erosion. However, reliable data allowing quantification erosion process are sparse, particular, involving live plants. In this study, physical model experiments moveable-bed flume were carried out...
Infragravity (IG) waves are expected to contribute significantly coastal flooding and sediment transport during hurricane overwash, yet the dynamics of these low-frequency impact remain poorly documented understood. This paper utilizes hydrodynamic measurements collected Hurricane Harvey (2017) across a low-lying barrier-island cut (Texas, U.S.A.) sea-to-bay directed flow (i.e., overwash). IG were observed propagate island for period five hours, superimposed on depth modulated by very-low...
Abstract Meteotsunami waves can be triggered by atmospheric disturbances accompanying tropical cyclone rainbands (TCRs) before, during, and long after a (TC) makes landfall. Due to paucity of high‐resolution field data along open coasts during TCs, relatively little is known about the forcing that generate resonantly amplify these ocean waves, nor their coastal impact. This study links measurements sea level air pressure from Hurricane Harvey (2017) with numerical model assess potential for...
The additional resistance to erosion due flows down steep slopes that can be achieved by placing rock instead of dumping randomly has been quantified during a large-scale flume investigation. Testing was undertaken for 0.2, 0.3, and 0.4 with two layers armor overlying filter, consistent conventional protection designs. Two sizes sandstone mean diameters 76 109mm basalt diameter 94mm were tested. Placing achieve maximum bulk density (mass per unit in situ volume) increased failure flow (flow...
Ridge-runnel features can comprise large volumes of sand, and their migration have a significant influence on the coastal sediment budget beach recovery after storm. Numerical modeling ridge-runnel is challenging partly because strong interactions between hydrodynamics morphology limited available field laboratory measurements. This study investigated effect water ponding runnel drainage onshore ridge in an experiment sand flume where detailed free‐surface velocity measurements were taken...
Vegetated coastal sand dunes can be vital components of flood risk reduction schemes due to their ability act as an erosive buffer during storm surge and wave attack. However, the effects plant morphotypes on wave-induced erosion process are hard quantify, in part complexity coupled hydrodynamic, morphodynamic, biological processes involved. In this study four vegetation types dune under action was investigated a flume experiment. Sand profiles containing real arrangements at different...
The Delaware Atlantic coast of 40km length is suffering from beach erosion. State placed approximately 1,100,0001m3 sand on its four beaches in 1998. Beach profiles were surveyed along fixed 65 cross-shore lines almost semiannually for 9–11 times until 2005. measured are analyzed to obtain the shoreline displacement and area changes landward shoreward zones between two successive profile surveys. relations among these change parameters indicate that a standard one-line model may not be...
An experiment was conducted in a wave flume to examine the processes of gravel beach profile evolution under irregular waves. Two erosion tests were performed on steep slope 1/2 with two different significant heights. accretion test mild 1/5 until its became quasi-equilibrium. Another initiated bar constructed at toe equilibrium profile. The migrated onshore and resulted seaward shift Quasi-equilibrium profiles observed after 18 or 36 bursts 400-s action similar but affected by differences...
Briggs, T.R.; Figlus, J.; Torres-Freyermuth, A.; Puleo, J.A.; Warren, W., and Alrushaid, T., 2020. Variability in onshore sediment transport on a natural beach during Central American cold surge event. Journal of Coastal Research, 36(3), 487–497. Coconut Creek (Florida), ISSN 0749-0208.Beaches facing the Gulf Mexico along northern part Yucatan Peninsula experience frequent events, or northerly storms locally called "Nortes," which interrupt usual daily patterns sea- land-breeze–dominated...