Margaret Palmsten is a Research Oceanographer at the St. Petersburg Coastal and Marine Science Center in St. Petersburg, Florida.
Science and Products
State of Our Nation's Coast
The USGS Coastal and Marine Hazards and Resources Program (CMHRP) established a Coastal Change Hazards (CCH) programmatic focus to support the optimization of resources, improve the visibility of USGS coastal hazards science, and prioritize science, products, and tools that meet stakeholder needs. Important work by CMHRP scientists and staff within CCH supports hazard mitigation along our nation’s...
Using Video Imagery to Study Storm Events at Pea Island National Wildlife Refuge
Two video cameras were temporarily mounted on a dune at Pea Island National Wildlife Refuge on the Outer Banks of North Carolina.
National Assessment of Hurricane-Induced Coastal Erosion Hazards: Puerto Rico
These datasets contain information on the probabilities of hurricane-induced erosion (collision, inundation, and overwash) for each 100-meter (m) section of the Puerto Rico open-ocean coastline for category 1-5 hurricanes. The analysis is based on a storm-impact scaling model (Sallenger, 2000; https://www.jstor.org/stable/4300099) that uses observations of beach morphology combined with sophistica
A machine learning approach to predicting equilibrium ripple wavelength
Sand ripples are geomorphic features on the seafloor that affect bottom boundary layer dynamics including wave attenuation and sediment transport. We present a new equilibrium ripple predictor using a machine learning approach that outputs a probability distribution of wave-generated equilibrium wavelengths and statistics including an estimate of ripple height, the most probable ripple wavelength,
On the potential for remote observations of coastal morphodynamics from surf-cameras
Recreational surf-cameras (surfcams) are ubiquitous along many coastlines, and yet are a largely untapped source of coastal morphodynamic observations. Surfcams offer broad spatial coverage and flexibility in data collection, but a method to remotely acquire ground control points (GCPs) and initial camera parameter approximations is necessary to better leverage this existing infrastructure to make
The Coastal Imaging Research Network (CIRN)
The Coastal Imaging Research Network (CIRN) is an international group of researchers who exploit signatures of phenomena in imagery of coastal, estuarine, and riverine environments. CIRN participants develop and implement new coastal imaging methodologies. The research objective of the group is to use imagery to gain a better fundamental understanding of the processes shaping those environments. C
Hotspot dune erosion on an intermediate beach
A large, low pressure Nor’easter storm and Hurricane Joaquin contributed to multiple weeks of sustained, elevated wave and water level conditions along the southeastern Atlantic coast of the United States in Fall 2015. Sea level anomalies in excess of 1 m and offshore wave heights of up to 4 m were recorded during these storms, as observed at the U.S. Army Corps of Engineers’ Field Research Facili
Sea state from single optical images: A methodology to derive wind-generated ocean waves from cameras, drones and satellites
Sea state is a key variable in ocean and coastal dynamics. The sea state is either sparsely
measured by wave buoys and satellites or modelled over large scales. Only a few attempts have been devoted to sea state measurements covering a large domain; in particular its estimation from optical images. With optical technologies becoming omnipresent, optical images offer incomparable spatial resolution
SurfRCaT: A tool for remote calibration of pre-existing coastal cameras to enable their use as quantitative coastal monitoring tools
The Surf-camera Remote Calibration Tool (SurfRCaT) is a Python-based software application to calibrate and rectify images from pre-existing video cameras that are operating at coastal sites in the United States. The software enables remote camera calibration and subsequent image rectification by facilitating the remote-extraction of ground control points using airborne lidar observations, and guid
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Science and Products
- Science
State of Our Nation's Coast
The USGS Coastal and Marine Hazards and Resources Program (CMHRP) established a Coastal Change Hazards (CCH) programmatic focus to support the optimization of resources, improve the visibility of USGS coastal hazards science, and prioritize science, products, and tools that meet stakeholder needs. Important work by CMHRP scientists and staff within CCH supports hazard mitigation along our nation’s...Using Video Imagery to Study Storm Events at Pea Island National Wildlife Refuge
Two video cameras were temporarily mounted on a dune at Pea Island National Wildlife Refuge on the Outer Banks of North Carolina. - Data
National Assessment of Hurricane-Induced Coastal Erosion Hazards: Puerto Rico
These datasets contain information on the probabilities of hurricane-induced erosion (collision, inundation, and overwash) for each 100-meter (m) section of the Puerto Rico open-ocean coastline for category 1-5 hurricanes. The analysis is based on a storm-impact scaling model (Sallenger, 2000; https://www.jstor.org/stable/4300099) that uses observations of beach morphology combined with sophistica - Publications
A machine learning approach to predicting equilibrium ripple wavelength
Sand ripples are geomorphic features on the seafloor that affect bottom boundary layer dynamics including wave attenuation and sediment transport. We present a new equilibrium ripple predictor using a machine learning approach that outputs a probability distribution of wave-generated equilibrium wavelengths and statistics including an estimate of ripple height, the most probable ripple wavelength,On the potential for remote observations of coastal morphodynamics from surf-cameras
Recreational surf-cameras (surfcams) are ubiquitous along many coastlines, and yet are a largely untapped source of coastal morphodynamic observations. Surfcams offer broad spatial coverage and flexibility in data collection, but a method to remotely acquire ground control points (GCPs) and initial camera parameter approximations is necessary to better leverage this existing infrastructure to makeThe Coastal Imaging Research Network (CIRN)
The Coastal Imaging Research Network (CIRN) is an international group of researchers who exploit signatures of phenomena in imagery of coastal, estuarine, and riverine environments. CIRN participants develop and implement new coastal imaging methodologies. The research objective of the group is to use imagery to gain a better fundamental understanding of the processes shaping those environments. CHotspot dune erosion on an intermediate beach
A large, low pressure Nor’easter storm and Hurricane Joaquin contributed to multiple weeks of sustained, elevated wave and water level conditions along the southeastern Atlantic coast of the United States in Fall 2015. Sea level anomalies in excess of 1 m and offshore wave heights of up to 4 m were recorded during these storms, as observed at the U.S. Army Corps of Engineers’ Field Research FaciliSea state from single optical images: A methodology to derive wind-generated ocean waves from cameras, drones and satellites
Sea state is a key variable in ocean and coastal dynamics. The sea state is either sparsely measured by wave buoys and satellites or modelled over large scales. Only a few attempts have been devoted to sea state measurements covering a large domain; in particular its estimation from optical images. With optical technologies becoming omnipresent, optical images offer incomparable spatial resolutionSurfRCaT: A tool for remote calibration of pre-existing coastal cameras to enable their use as quantitative coastal monitoring tools
The Surf-camera Remote Calibration Tool (SurfRCaT) is a Python-based software application to calibrate and rectify images from pre-existing video cameras that are operating at coastal sites in the United States. The software enables remote camera calibration and subsequent image rectification by facilitating the remote-extraction of ground control points using airborne lidar observations, and guid - News
Filter Total Items: 13
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