Patricia (Soupy) Dalyander
Dr. Soupy Dalyander is a research oceanographer at the USGS St. Petersburg Coastal and Marine Science Center. She received her BS in physics and math from Eckerd College in 1999, her MS in geological oceanography from Oregon State University in 2001, and her PhD in Mechanical Engineering from the University of Florida in 2008. She specializes in the use of numerical modeling and data analysis to address both research and applied problems related to sediment transport in the coastal environment, including sandy beaches, barrier islands, and the continental shelf. She has experience implementing a broad range of hydrodynamic, wave, sediment transport, and water quality models. She is particularly interested in leveraging understanding of hydrodynamic and sediment transport processes to inform management decisions, and using management problems to guide focus in increasing fundamental understanding. Her recent projects have included informing anthropogenic use and habitat delineation of the continental shelf through numerical modeling of sediment mobility on regional scales; adapting sediment transport formulations in the surf zone for guiding clean-up operations of sand and weathered oil agglomerates; and investigating large scale hydrodynamic patterns driving barrier island response.
Areas of Interest
- Modeling and predicting the impacts of climate change on coastal areas
- Oil spill fate and transport
- Sediment transport and exchange between the beach, nearshore, and continental shelf
- Development and application of coupled coastal modeling systems (atmospheric, wave, circulation, sediment transport, water quality, biological)
- Improving management relevancy of basic and applied research and developing effective communication strategies to integrate science into policy
- Impacts and risk assessment of storms and extreme events
- Collaboration in multi-scale and interdisciplinary observational and numerical modeling projects for understanding coastal and estuarine environment
Science and Products
In 2009, the Mississippi Coastal Improvements Program (MsCIP) was developed by the U.S. Army Corps of Engineers (USACE), Mobile District in conjunction with other Federal and State agencies, to help reduce future storm damage along the Mississippi Gulf Coast. The Comprehensive Plan for MsCIP includes restoring the Mississippi barrier islands and over 3,000 acres of wetland and coastal forest...
This project is a collaborative effort between the USGS, U.S. Army Corps of Engineers (USACE), and the State of Alabama funded by National Fish and Wildlife Foundation (NFWF) to investigate viable, sustainable restoration options that protect and restore the natural resources of Dauphin Island, Alabama. The project is focused on restoration options that protect and restore habitat and living...
Integrating Mapping and Modeling to Support the Restoration of Bird Nesting Habitat at Breton Island National Wildlife Refuge
Breton Island, located at the southern end of the Chandeleur Islands, Louisiana, is part of the Breton National Wildlife Refuge (NWR) established in 1904 by Theodore Roosevelt. Breton NWR is recognized as a globally important bird habitat because of the resources it provides, and hosts one of Louisiana's largest historical brown pelican nesting colonies. Without actions to restore sand to the...
Evaluating a new open-source, standards-based framework for web portal development in the geosciences
Web portals are one of the principal ways geospatial information can be communicated to the public. A few prominent USGS examples are the Geo Data Portal (http://cida.usgs.gov/gdp/ [URL is accessible with Google Chrome]), EarthExplorer (http://earthexplorer.usgs.gov/), the former Derived Downscaled Climate...
Hydrodynamics and sediment mobility processes over a degraded senile coral reef
Coral reefs can influence hydrodynamics and morphodynamics by dissipating and refracting incident wave energy, modifying circulation patterns, and altering sediment transport pathways. In this study, the sediment and hydrodynamic response of a senile (dead) barrier reef (Crocker Reef, located in the upper portion of the Florida Reef Tract) to...Torres-Garcia, Legna M.; Dalyander, P. Soupy; Long, Joseph W.; Zawada, David G.; Yates, Kimberly K.; Moore, Christopher; Olabarrieta, Maitane
A framework for modeling scenario-based barrier island storm impacts
Methods for investigating the vulnerability of existing or proposed coastal features to storm impacts often rely on simplified parametric models or one-dimensional process-based modeling studies that focus on changes to a profile across a dune or barrier island. These simple studies tend to neglect the impacts to curvilinear or alongshore varying...Mickey, Rangley; Long, Joseph W.; Dalyander, P. Soupy; Plant, Nathaniel G.; Thompson, David M.
Laboratory observations of artificial sand and oil agglomerates
Sand and oil agglomerates (SOAs) form when weathered oil reaches the surf zone and combines with suspended sediments. The presence of large SOAs in the form of thick mats (up to 10 centimeters [cm] in height and up to 10 square meters [m2] in area) and smaller SOAs, sometimes referred to as surface residual balls (SRBs), may lead to the re-oiling...Jenkins, Robert L.; Dalyander, P. Soupy; Penko, Allison; Long, Joseph W.
Gulf Coast vulnerability assessment: Mangrove, tidal emergent marsh, barrier islands and oyster reef
Climate, sea level rise, and urbanization are undergoing unprecedented levels of combined change and are expected to have large effects on natural resources—particularly along the Gulf of Mexico coastline (Gulf Coast). Management decisions to address these effects (i.e., adaptation) require an understanding of the relative vulnerability of various...Watson, Amanda; Reece, Joshua; Tirpak, Blair; Edwards, Cynthia Kallio; Geselbracht, Laura; Woodrey, Mark; LaPeyre, Megan K.; Dalyander, Patricia (Soupy)
Incipient motion of sand-oil agglomerates
No abstract available.Schippers, Melanie M. A.; Jacobsen, Niels G.; Dalyander, P. Soupy; Nelson, Timothy; McCall, Robert T.
Correction of elevation offsets in multiple co-located lidar datasets
IntroductionTopographic elevation data collected with airborne light detection and ranging (lidar) can be used to analyze short- and long-term changes to beach and dune systems. Analysis of multiple lidar datasets at Dauphin Island, Alabama, revealed systematic, island-wide elevation differences on the order of 10s of centimeters (cm) that were...Thompson, David M.; Dalyander, P. Soupy; Long, Joseph W.; Plant, Nathaniel G.
Laboratory observations of artificial sand and oil agglomerates video and velocity data
The U.S. Geological Survey conducted experiments during March of 2014 to expand the available data on sand and oil agglomerate motion; test shear stress based incipient motion parameterizations in a controlled, laboratory setting; and directly observe sand and oil agglomerate exhumation and burial processes. Experiments were carried out at the...Jenkins, Robert; Dalyander, P. Soupy; Penko, Allison; Long, Joseph W.; Nelson, Timothy
Storm-impact scenario XBeach model inputs and tesults
The XBeach model input and output of topography and bathymetry resulting from simulation of storm-impact scenarios at the Chandeleur Islands, LA, as described in USGS Open-File Report 2017–1009 (https://doi.org/10.3133/ofr20171009), are provided here. For further information regarding model input generation and visualization of model output...Mickey, Rangley; Long, Joseph W.; Thompson, David M.; Plant, Nathaniel G.; Dalyander, P. Soupy
A methodology for modeling barrier island storm-impact scenarios
A methodology for developing a representative set of storm scenarios based on historical wave buoy and tide gauge data for a region at the Chandeleur Islands, Louisiana, was developed by the U.S. Geological Survey. The total water level was calculated for a 10-year period and analyzed against existing topographic data to identify when storm-...Mickey, Rangley C.; Long, Joseph W.; Plant, Nathaniel G.; Thompson, David M.; Dalyander, P. Soupy
Use of structured decision-making to explicitly incorporate environmental process understanding in management of coastal restoration projects: Case study on barrier islands of the northern Gulf of Mexico
Coastal ecosystem management typically relies on subjective interpretation of scientific understanding, with limited methods for explicitly incorporating process knowledge into decisions that must meet multiple, potentially competing stakeholder objectives. Conversely, the scientific community lacks methods for identifying which advancements in...Dalyander, P. Soupy; Meyers, Michelle B.; Mattsson, Brady; Steyer, Gregory; Godsey, Elizabeth; McDonald, Justin; Byrnes, Mark R.; Ford, Mark
The Gulf Coast Vulnerability Assessment: Mangrove, Tidal Emergent Marsh, Barrier Islands, and Oyster Reef
Climate, sea level rise, and urbanization are undergoing unprecedented levels of combined change and are expected to have large effects on natural resources—particularly along the Gulf of Mexico coastline (Gulf Coast). Management decisions to address these effects (i.e., adaptation) require an understanding of the relative vulnerability of...Watson, Amanda; Reece, Joshua S.; Tirpak, Blair; Edwards, Cynthia Kallio; Geselbracht, Laura; Woodrey, Mark; LaPeyre, Megan K.; Dalyander, P. Soupy
National assessment of nor’easter-induced coastal erosion hazards: mid- and northeast Atlantic coast
Beaches serve as a natural buffer between the ocean and inland communities, ecosystems, and natural resources. However, these dynamic environments move and change in response to winds, waves, and currents. During extreme storms, changes to beaches can be great, and the results are sometimes catastrophic. Lives may be lost, communities destroyed,...Birchler, Justin J.; Dalyander, P. Soupy; Stockdon, Hilary F.; Doran, Kara S.
The ability to connect elevation and habitat characteristics used by wintering shorebirds has been identified as beneficial to conservation and restoration planning by management entities such as the U. S. Fish and Wildlife Service.
Protocols created as part of the Mississippi Coastal Improvements Program and will be used to evaluate project success and determine if adaptive management action may be needed to achieve habitat restoration and mainland storm protection.
A newly developed computer model holds the promise of helping scientists track and predict where oil will go after a spill, sometimes years later.