Who We Are
Meet the Applied Coastal Team
Mark R. Byrnes, Ph.D.
Dr. Byrnes is a Principal Coastal Scientist and co-founder of Applied Coastal Research and Engineering. For the past 32 years, he has been a Principal Investigator/Program Manager on more than 90 coastal and nearshore process studies as a Research Scientist at the U.S. Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory; Coastal Geology Section Chief for the Louisiana Geological Survey; Research Professor at the Coastal Studies Institute, Louisiana State University; and Principal Coastal Scientist at Applied Coastal. The emphasis for most studies has been on regional coastal change and geomorphic evolution of nearshore sedimentary deposits (shoreline and bathymetric change), physical environmental impact assessments for coastal and estuarine wetlands, sediment budget evaluations, shoreline restoration strategies, wetland loss delineation and classification, regional sediment transport processes, and geologic framework studies of coastal deposits. He has authored more than 100 publications in these research areas.
John S. Ramsey, P.E., D.CE
Mr. Ramsey is a Principal Coastal Engineer and co-founder of Applied Coastal Research and Engineering. He has served as Project Manager and/or Principal Investigator for estuarine water quality/flushing studies, coastal embayment restoration projects, regional shoreline management plans, beach nourishment and coastal structure designs, geotechnical engineering and groundwater flow studies, hydrodynamic and sediment transport evaluations, and environmental studies required for permitting of coastal projects. He has authored over 60 reports, papers, and presentations in these areas of interest.
Sean W. Kelley, P.E., M.C.E.
Mr. Kelley is a Senior Coastal Engineer specializing in the measurement and modeling of coastal processes. His past modeling work includes the application of state-of-the-art wave, hydrodynamic, and sediment transport models in a broad range of coastal engineering and analysis projects. This experience includes determination of coastal structure design criteria, design of beach nourishments, and analyses of estuarine circulation and water quality. Mr. Kelley is also skilled in techniques and equipment used to make measurements in the coastal environment, including tides, currents, and bathymetry.
Hugh E. (Trey) Ruthven, III, M.S.E.
Mr. Ruthven is a Senior Coastal Engineer specializing in numerical modeling of hydrodynamics, nearshore coastal dynamics, and coastal structures. He is experienced in hydrodynamic modeling, wave and sediment modeling, inlet processes, hydrographic analysis, coastal mitigation, and the design and rehabilitation of shore protection structures. Mr. Ruthven is skilled in the application of computer programs for two‑dimensional hydraulic and hydrologic modeling, and has performed numerous two‑dimensional analyses to characterize hydrodynamics, sediment transport, littoral transport, harbor agitation, and nearshore contaminant trapping.
Jennifer L. Berlinghoff, M.S.
Miss Berlinghoff is a Senior Environmental Scientist specializing in coastal GIS analyses involving shoreline interpretation and mapping, wetland and bathymetric change, littoral sediment budget evaluations, and wetland loss and damage assessment. She has been involved in a broad range of regional geomorphic change projects using GIS and remote sensing software, as well as researching and compiling shoreline and bathymetric surveys, including GPS and Lidar surveys, for evaluating coastal sedimentation processes in beach and wetland environments throughout the northern Gulf of Mexico. She also has participated in various field data collection efforts for wetland projects in southern Louisiana.
Matthew B. Doelp, M.C.E., E.I.T.
Mr. Doelp joined the team at Applied Coastal as a Coastal Engineer in 2018 after completing his Masters degree in coastal engineering from University of Delaware. His research focused on "Surf Zone Injury Along the Delaware Atlantic-Fronting Coast: Quantification, Prediction, and Directed Awareness". His recent work is focused on modeling hydrodynamics in New Bedford Harbor.
Morgan E. Simms, M.S.
Ms. Simms joined the Applied Coastal team in 2018 as a Coastal Scientist with five years experience on dredged material management, port maintenance, beach nourishment and coastal structure designs, hydrodynamic and sediment transport evaluations, and environmental studies required for permitting of coastal projects. She has extensive field experience evaluating impacted marine environments and is well-versed in analytical and numerical techniques for evaluating coastal, estuarine, and salt marsh processes.
Elizabeth W. Hunt, B.S.
Ms. Hunt has been Office Manager at Applied Coastal since 1999. She is in charge of accounting and contract management and performs a broad range of administrative roles focused on ensuring seamless office operations.
Sarah F. Griffee, M.A.
Ms. Griffee is a Coastal GIS Specialist involved in a broad range of regional geomorphic change and sediment budget analyses, as well as researching and compiling shoreline and bathymetry surveys, including GPS and Lidar surveys, for evaluating coastal sedimentation processes and regional response of beaches and inlets to incident wave and current processes. She also has participated in various field data collection efforts for beach and estuarine projects throughout MA.
Louis D. Britsch, III, Ph.D.
Dr. Britsch joined the Applied Coastal team in 2015 as a Senior Coastal Geologist after serving the U.S. Army Corps of Engineers, New Orleans District since 1985. As a USACE employee, he was Principal Investigator/Project Geologist on more than 100 coastal geology and engineering studies as a Research Scientist at the U.S. Army Engineer Research and Development Center, Coastal and Hydraulics Laboratory (formerly the Coastal Engineering Research Center); Research Geologist, Geotechnical Laboratory, U.S. Army Engineer Research and Development Center; Senior Geologist, USACE New Orleans District. Dr. Britsch continues to provide his expertise and experience on Applied Coastal projects related to wetland loss, coastal geology, shoreline dynamics, subsidence, and sea-level rise.
Ben Beasley, M.S.
Mr. Beasley joined Applied Coastal in 2018 after completing his thesis on coastal erosion processes associated with shoreface retreat and contour straightening along the barrier islands of south Louisiana. He continues similar analyses at Applied Coastal using detailed shoreline and bathymetry surveys to conduct a broad range of regional geomorphic change and sediment budget analyses using GIS software for evaluating coastal sedimentation processes in beach and wetland environments throughout the northern Gulf of Mexico.
Rob Hollis, M.S.
Mr. Hollis joined the Applied Coastal team in 2019 serving as a Coastal Geologist specializing in coastal GIS analyses involving shoreline interpretation and mapping, wetland and bathymetric change, littoral sediment budget evaluations, and wetland loss and damage assessment.