Thumbnail image for the Todos Unidos at DOI video. The Todos Unidos at DOI video celebrates unity and diversity across the Nation by the National Association of Hispanic Employees (NAHE).
Alfredo Aretxabaleta , PhD
(He/Him)Alfredo (he/him/él) serves as a Research and Equipment Development Grade Evaluation (RGE-EDGE) Senior Scientist in the Office of Science Quality and Integrity. Previously, he worked as an Oceanographer at the Woods Hole Coastal and Marine Science Center.
Alfredo joined the USGS Office of Science Quality and Integrity (OSQI) in 2023 first as a Staff Scientist and then as an RGE-EDGE Senior Scientist. Previously, Alfredo’s research mainly focused on processes controlling water level in coastal environments, sediment transport, and estuarine dynamics. Alfredo received a Ph.D. in Marine Sciences from the University of North Carolina at Chapel Hill. His research interests include:
- Water Level Dynamics: Investigating the processes controlling water levels in coastal environments, including tidal effects, storm events, and sea level rise.
- Sediment Transport: Focusing on sediment dynamics, especially during storm events, and how this impacts coastal evolution.
- Numerical Modeling: Utilizing models to simulate and predict coastal ocean processes, such as wave dynamics, sediment transport, and the interaction between ocean and atmosphere.
- Total Water Level and Coastal Change Forecasting: Developing and implementing systems for predicting water levels and the probability of waves impacting coastal regions, aiding in the preparation and response to coastal hazards.
- Development of the SMOS Satellite to Measure Ocean Salinity: Involvement in the development of the Soil Moisture and Ocean Salinity (SMOS) satellite, which measured salinity in the oceans.
- Particle Dynamics in the Coastal Ocean: Examining particle dynamics, including biophysical interactions, to understand the movement and behavior of particles in coastal environments, with applications such as the dynamics of harmful algal blooms in coastal waters.
- Diversity and Mentoring in Geosciences: Promoting diversity and providing mentorship within the geoscience community, emphasizing the importance of inclusive practices in scientific research.
Science and Products
Making USGS/NOAA Total Water Level and Coastal Change Forecast data accessible through user-friendly interfaces
The Total Water Level and Coastal Change Forecast delivers 6-day forecasts of hourly water levels and the probability of waves impacting dunes along 5000 km of sandy coasts along the Atlantic and Gulf of Mexico and will soon expand to the Pacific. These forecasts provide needed information to local governments and federal partners and are used by the USGS to place sensors before a storm. The forec
COAWST: A Coupled-Ocean-Atmosphere-Wave-Sediment Transport Modeling System
Understanding the processes responsible for coastal change is important for managing both our natural and economic coastal resources. Storms are one of the primary driving forces causing coastal change from a coupling of wave- and wind-driven flows. To better understand storm impacts and their effects on our coastlines, there is an international need to better predict storm paths and intensities...
Coastal System Change at Fire Island, New York
Fire Island is a 50-km long barrier island along the south shore of Long Island, New York. The island is comprised of seventeen year-round communities; federal, state, and county parks; and supports distinct ecosystems alongside areas of economic and cultural value. In addition to providing resources to its residents, the barrier island also protects the heavily-populated mainland from storm waves...
Back-barrier and Estuarine - Coastal System Change at Fire Island, New York
Regional-scale modeling forecasts how atmospheric forcing and oceanographic circulation influence estuarine circulation and water levels, sediment transport, and wetland change.
Estuarine Processes, Hazards, and Ecosystems
Estuarine processes, hazards, and ecosystems describes several interdisciplinary projects that aim to quantify and understand estuarine processes through observations and numerical modeling. Both the spatial and temporal scales of these mechanisms are important, and therefore require modern instrumentation and state-of-the-art hydrodynamic models. These projects are led from the U.S. Geological...
Coastal Model Applications and Field Measurements
Numerical models are used by scientists, engineers, coastal managers, and the public to understand and predict processes in the coastal ocean. This project supports the development and application of open-source coastal models and has several objectives: 1) improve the code of numerical sediment-transport models by implementing new or improved algorithms; 2) obtain measurements of coastal ocean...
Estuarine Processes Coastal Hazards
Extreme tides and coastal storms transfer high water levels to estuaries through natural and managed entrances. The size of the transfer depends on the duration of the event and the geomorphology of the estuary. We use observational data and modeling scenarios to understand and spatially map this transfer at our study sites.
Estuarine Processes Model Development
We are developing new routines within the COAWST model framework to represent coupled bio-physical processes in estuarine and coastal regions. These include routines for marsh vulnerability to waves, estuarine biogeochemistry, and feedbacks between aquatic vegetation and hydrodynamics.
Todos Unidos
Thumbnail image for the Todos Unidos at DOI video. The Todos Unidos at DOI video celebrates unity and diversity across the Nation by the National Association of Hispanic Employees (NAHE).
Science and Products
Making USGS/NOAA Total Water Level and Coastal Change Forecast data accessible through user-friendly interfaces
The Total Water Level and Coastal Change Forecast delivers 6-day forecasts of hourly water levels and the probability of waves impacting dunes along 5000 km of sandy coasts along the Atlantic and Gulf of Mexico and will soon expand to the Pacific. These forecasts provide needed information to local governments and federal partners and are used by the USGS to place sensors before a storm. The forec
COAWST: A Coupled-Ocean-Atmosphere-Wave-Sediment Transport Modeling System
Understanding the processes responsible for coastal change is important for managing both our natural and economic coastal resources. Storms are one of the primary driving forces causing coastal change from a coupling of wave- and wind-driven flows. To better understand storm impacts and their effects on our coastlines, there is an international need to better predict storm paths and intensities...
Coastal System Change at Fire Island, New York
Fire Island is a 50-km long barrier island along the south shore of Long Island, New York. The island is comprised of seventeen year-round communities; federal, state, and county parks; and supports distinct ecosystems alongside areas of economic and cultural value. In addition to providing resources to its residents, the barrier island also protects the heavily-populated mainland from storm waves...
Back-barrier and Estuarine - Coastal System Change at Fire Island, New York
Regional-scale modeling forecasts how atmospheric forcing and oceanographic circulation influence estuarine circulation and water levels, sediment transport, and wetland change.
Estuarine Processes, Hazards, and Ecosystems
Estuarine processes, hazards, and ecosystems describes several interdisciplinary projects that aim to quantify and understand estuarine processes through observations and numerical modeling. Both the spatial and temporal scales of these mechanisms are important, and therefore require modern instrumentation and state-of-the-art hydrodynamic models. These projects are led from the U.S. Geological...
Coastal Model Applications and Field Measurements
Numerical models are used by scientists, engineers, coastal managers, and the public to understand and predict processes in the coastal ocean. This project supports the development and application of open-source coastal models and has several objectives: 1) improve the code of numerical sediment-transport models by implementing new or improved algorithms; 2) obtain measurements of coastal ocean...
Estuarine Processes Coastal Hazards
Extreme tides and coastal storms transfer high water levels to estuaries through natural and managed entrances. The size of the transfer depends on the duration of the event and the geomorphology of the estuary. We use observational data and modeling scenarios to understand and spatially map this transfer at our study sites.
Estuarine Processes Model Development
We are developing new routines within the COAWST model framework to represent coupled bio-physical processes in estuarine and coastal regions. These include routines for marsh vulnerability to waves, estuarine biogeochemistry, and feedbacks between aquatic vegetation and hydrodynamics.
Todos Unidos
Thumbnail image for the Todos Unidos at DOI video. The Todos Unidos at DOI video celebrates unity and diversity across the Nation by the National Association of Hispanic Employees (NAHE).
Thumbnail image for the Todos Unidos at DOI video. The Todos Unidos at DOI video celebrates unity and diversity across the Nation by the National Association of Hispanic Employees (NAHE).