A5076110214- Coastal and Marine Dynamics
- Coastal wetland ecosystem dynamics
- Tropical and Extratropical Cyclones Research
- Ocean Waves and Remote Sensing
- Geological formations and processes
- Aeolian processes and effects
- Remote Sensing and LiDAR Applications
- Coastal and Marine Management
- Flood Risk Assessment and Management
- Underwater Acoustics Research
- Oceanographic and Atmospheric Processes
- Groundwater flow and contamination studies
- Groundwater and Isotope Geochemistry
- Marine and Offshore Engineering Studies
- 3D Surveying and Cultural Heritage
- Seismic Waves and Analysis
- Wave and Wind Energy Systems
- Oil Spill Detection and Mitigation
- Maritime and Coastal Archaeology
- Hydrology and Sediment Transport Processes
- Earthquake and Tsunami Effects
- Methane Hydrates and Related Phenomena
- Water Quality and Resources Studies
- Microbial Community Ecology and Physiology
- 3D Modeling in Geospatial Applications
UNSW Sydney
2015-2024
Manly Hospital
2012-2024
Sydney Water
2017-2024
Brigham Young University
2023
Bureau of Meteorology
2023
Australian Government
2023
The University of Western Australia
2023
Centre National de la Recherche Scientifique
2022
La Rochelle Université
2022
NSW Department of Planning and Environment
2020
CoastSat is an open-source software toolkit written in Python that enables the user to obtain time-series of shoreline position at any sandy coastline worldwide from 30+ years (and growing) publicly available satellite imagery. The exploits capabilities Google Earth Engine efficiently retrieve Landsat and Sentinel-2 images cropped user-defined region interest. resulting are pre-processed remove cloudy pixels enhance spatial resolution, before applying a robust generic detection algorithm....
Abstract Extratropical cyclones (ETCs) are the primary driver of large-scale episodic beach erosion along coastlines in temperate regions. However, key drivers magnitude and regional variability rapid morphological changes caused by ETCs at coast remain poorly understood. Here we analyze an unprecedented dataset high-resolution regional-scale response to ETC that impacted southeast Australia, evaluate new observations within context existing long-term coastal monitoring program. This was...
Abstract Long-term observational datasets that record and quantify variability, changes trends in beach morphology at sandy coastlines together with the accompanying wave climate are rare. A monthly profile survey program commenced April 1976 Narrabeen located on Sydney’s Northern Beaches southeast Australia is one of just a handful sites worldwide where on-going uninterrupted monitoring now spans multiple decades. With reaching its 40-year milestone 2016, it timely free unrestricted use...
Abstract Coastal zone management requires the ability to predict coastline response storms and longer‐term seasonal interannual variability in regional wave climate. Shoreline models typically rely on extensive historical observations derive site‐specific calibration. To circumvent challenge that suitable data sets are rarely available, this contribution utilizes twelve 5+ year shoreline from around world develop a generalized model for response. The shared dependency of coefficients local...
This Short Communication provides a Coastal Engineering perspective on present and emerging capabilities of satellite optical imagery, including real-world applications that can now be realistically implemented from the desktop. Significantly, at vast majority locations worldwide, remote sensing is currently only source information to complement much more limited in-situ instrumentation for land sea mapping, monitoring measurement. Less well recognised publicly available, routinely sampled...
Field measurements of vertical pore‐pressure gradients within the bed are used to quantify instantaneous (8 Hz) rates swash infiltration‐exfiltration across beach face. Cyclic is associated with individual events, observed flow O (10 −3 ) m/s. Rates net swash‐groundwater exchange (i.e., through‐bed integrated over several cycles) two orders magnitude smaller. At timescale swashes, face much greater than horizontal gradients. This permits application numerical solution Darcy's law for...
The temporal and spatial variability of crescentic sandbars is analyzed with hourly long‐term (months) video observations collected at four barred sites are qualitatively compared to the predicted by hypotheses underpinning existing approaches models for bar formation (edge‐wave template model, linear stability analysis, nonlinear models). observations, coming from single beaches Duck (North Carolina, USA) Miyazaki (Kyushu, Japan), double‐barred northern Gold Coast (Queensland, Australia)...
[1] Over 30 years of wave and beach survey data at Collaroy-Narrabeen Beach in southeast Australia are analyzed to investigate the extent which shoreline variability within this coastal embayment is dominated by oscillations due cross-shore sediment exchange or rotations alongshore between beach's extremities. Offshore derived from both buoy measurements ERA-40 reanalysis data. EOF analysis monthly suggests that dominant mode (60% variability) an onshore-offshore greater more exposed...
Abstract The steepness of the beach face is a fundamental parameter for coastal morphodynamic research. Despite its importance, it remains extremely difficult to obtain reliable estimates beach‐face slope over large spatial scales (thousands km coastline). In this letter, novel approach estimate from time series satellite‐derived shoreline positions presented. This new technique uses frequency domain analysis find optimum that minimizes high‐frequency tidal fluctuations relative...
Narrabeen-Collaroy Beach, located on the Northern Beaches of Sydney along Pacific coast southeast Australia, is one longest continuously monitored beaches in world. This paper provides an overview evolution and international scientific impact this long-term beach monitoring program, from its humble beginnings over 40 years ago using rod tape measure Emery field survey method; to today, where application remote sensing data collection including drones, satellites crowd-sourced smartphone...
Abstract Although embayed beach rotation has been viewed and modeled as an alongshore sediment transport process acting on a uniform profile, recent research suggests more complex response whereby variability in cross‐shore fluxes may be significant. This study utilizes 5 years of fully three‐dimensional surveys at Narrabeen‐Collaroy Beach (SE Australia) to quantify the control nonuniform wave exposure processes rotation. Empirical orthogonal function analysis subaerial volume/width berm...
Long-term monitoring of shoreline changes is significant importance for coastal erosion prediction and planning. This paper presents the use Landsat archival dataset over 29 years to monitor at Narrabeen–Collaroy Beach, Australia. For each scene data, a vector-based subpixel level was automatically extracted by employing super-resolution border segmentation method. Monthly cross-shore beach profile surveys five locations along are used as ground truth data assess results. The experimental...