Stuart Grant Pearson

Stuart Grant Pearson
Delft University of Technology | TU · Department of Hydraulic Engineering

PhD Civil Engineering
Postdoc @ TU Delft, Researcher/Consultant @Deltares

About

40
Publications
17,473
Reads
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240
Citations
Citations since 2016
40 Research Items
240 Citations
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Introduction
I am a coastal engineering postdoc at TU Delft and Deltares, where I am investigating coastal sediment transport pathways and connectivity, following up on my PhD. I completed my MSc in Coastal Engineering at TU Delft, the University of Southampton, and NTNU. For my thesis I researched wave runup on coral atolls at TU Delft and Deltares. I have also researched the erosion of permafrost coastlines at NTNU and I worked for 2 years as a coastal modeller at Baird & Associates in Canada.
Additional affiliations
October 2021 - present
Delft University of Technology
Position
  • Postdoc
Description
  • Investigating coastal sediment transport pathways and connectivity.
October 2019 - December 2019
Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)
Position
  • Researcher
Description
  • Researched dynamics of suspended sand and fine sediment mixtures in tidal inlets, and carried out lab experiments in a mixing tank.
May 2019 - July 2019
United States Geological Survey
Position
  • Researcher
Description
  • Researched sediment dynamics and transport pathways in estuaries and tidal inlets, and supervised research on coral reef hydrodynamics.
Education
October 2016 - March 2022
Delft University of Technology
Field of study
  • Coastal Engineering
September 2015 - January 2016
University of Southampton
Field of study
  • Coastal & Marine Engineering and Management
February 2015 - July 2016
Delft University of Technology
Field of study
  • Coastal & Marine Engineering and Management

Publications

Publications (40)
Article
Full-text available
Many low-elevation, coral reef-lined, tropical coasts are vulnerable to the effects of climate change, sea-level rise, and wave-induced flooding. The considerable morphological diversity of these coasts and the variability of the hydrodynamic forcing that they are exposed to make predicting wave-induced flooding a challenge. A process-based wave-re...
Article
Full-text available
Connectivity provides a framework for analyzing coastal sediment transport pathways, building on conceptual advances in graph theory from other scientific disciplines. Connectivity schematizes sediment pathways as a directed graph (i.e., a set of nodes and links). This study presents a novel application of graph theory and connectivity metrics like...
Article
Full-text available
Quantifying and characterizing suspended sediment is essential to successful monitoring and management of estuaries and coastal environments. To quantify suspended sediment, optical and acoustic backscatter instruments are often used. Optical backscatter systems are more sensitive to mud particles ( < 63μm) and flocs, whereas acoustic backscatter s...
Article
Full-text available
Ebb tidal deltas (ETDs) are highly dynamic features of sandy coastal systems, and coastal management concerns (e.g., nourishment and navigation) present a pressing need to better describe and quantify their evolution. Here we propose two techniques for leveraging the availability of high-resolution bathymetric surveys to generate new insights into...
Article
Full-text available
Sediment tracer studies use uniquely identifiable particles to track the pathways and fate of individual sand or silt grains in marine environments. These techniques are best applied to assess connectivity between potential sediment sources and sinks, such as between a sand nourishment and an ecologically sensitive area. Significant challenges exis...
Article
Full-text available
Coral reefs represent an efficient natural mechanical coastal defense against ocean waves. The focus of this study is La Saline fringing coral reef, located in the microtidal West of La Réunion Island in the Indian Ocean, frequently exposed to Southern Ocean swell and cyclonic events. The aim is to provide a better understanding of the reef's coast...
Article
Full-text available
Coastal aeolian sediment transport is influenced by supply‐limiting factors caused by sediment sorting by grain size. Sorting processes can lead to coarsening of the bed surface and influence the formation of aeolian ripples. However, the influence sorting processes and bedforms might have on the magnitude of the transport is not fully understood....
Article
For successful and sustainable management of barrier islands, a thorough understanding of the ebb-tidal delta dynamics and interactions with the adjacent shorelines are of the utmost importance. Such understanding requires detailed observations and interpretations of the morphodynamics of smaller-scale features such as the individual channels and s...
Article
Full-text available
Tropical Cyclones (TCs) are singular storms causing intense wind, large waves, extreme water levels, and heavy rainfall. TCs prove every year to be one of the most destructive natural phenomena worldwide. The quantitative assessment of the hazards resulting from TCs (i.e., flooding and extreme winds) is challenging since satellite data are only ava...
Thesis
Full-text available
In an era of rising seas and other challenges posed by climate change, coastal regions like the Netherlands are facing ever graver threats. Strategic sand nourishments could mitigate the threat of coastal erosion and sea level rise on barrier island coasts while limiting ecological impacts. However, insufficient knowledge of sediment transport path...
Preprint
Full-text available
Coral reefs represent an efficient natural mechanical coastal defense against ocean waves. The focus of this study is the La Saline coral reef, located in the West of La Reunion Island in the Indian Ocean. The area is microtidal and frequently exposed to Southern Ocean swell as well as cyclonic events. The objective of this paper is to provide a be...
Article
Multiple tidal inlet systems like the Wadden Sea have long been considered as separated basins, bordered by so-called tidal divides. Recently, it was however shown that fluxes of water and sediment occur over the borders of these basins, especially during wind events. In this paper, the wind-driven fluxes over these borders and the residual flow of...
Conference Paper
Full-text available
A novel laboratory device was developed to generate homogeneous suspended sediment concentration and to provide sufficient volume, ≈ 1 m3, for several sensors functioning simultaneously. The hydrodynamic characteristics and the functionalities of the new device were evaluated. Experiments using four types of sediments were also conducted to investi...
Conference Paper
Full-text available
To predict how coastal and estuarine systems evolve, we need to better understand the pathways that sediment takes from source through temporary storage areas to sink. There is thus a need for numerical models tailored to predicting sediment transport pathways and determining connectivity of complex coastal systems. To meet this need, we developed...
Article
Full-text available
Coral reefs are effective natural coastal flood barriers that protect adjacent communities. Coral degradation compromises the coastal protection value of reefs while also reducing their other ecosystem services, making them a target for restoration. Here we provide a physics-based evaluation of how coral restoration can reduce coastal flooding for...
Preprint
Full-text available
A novel laboratory device was developed to generate homogeneous suspended sediment concentration and to provide sufficient volume, ≈ 1 m3, for several sensors functioning simultaneously. The hydrodynamic characteristics and the functionalities of the new device were evaluated. Experiments using four types of sediments were also conducted to investi...
Article
Full-text available
Waves are important drivers for reef hydrodynamics, and therefore strongly contribute to flooding over reef-lined coasts. While high-frequency waves are largely dissipated when they propagate over the reef flat due to breaking and friction, low-frequency (LF) waves are generally able to reach the back-reef beach. There, they can reflect and form (q...
Article
Full-text available
A large-scale field campaign was carried out on the ebb-tidal delta (ETD) of Ameland Inlet, a basin of the Wadden Sea in the Netherlands, as well as on three transects along the Dutch lower shoreface. The data have been obtained over the years 2017–2018. The most intensive campaign at the ETD of Ameland Inlet was in September 2017. With this campai...
Article
Full-text available
Considering the likely increase in coastal flooding in small island developing states (SIDSs) due to climate change, coastal managers at the local and global levels have been developing initiatives aimed at implementing disaster risk reduction (DRR) and adaptation measures. Developing science-based adaptation policies requires accurate coastal floo...
Article
Full-text available
Many coral reef-lined coasts are low-lying with elevations <4 m above mean sea level. Climate-change-driven sea-level rise, coral reef degradation, and changes in storm wave climate will lead to greater occurrence and impacts of wave-driven flooding. This poses a significant threat to their coastal communities. While greatly at risk, the complex hy...
Preprint
Connectivity provides a framework for analyzing coastal sediment transport pathways, building on conceptual advances in graph theory from other scientific disciplines. Connectivity schematizes sediment pathways as a directed graph (i.e., a set of nodes and links). Existing techniques in graph theory and network analysis provide a low barrier to ent...
Preprint
Full-text available
Abstract. A large-scale field campaign has been carried out on the ebb-tidal delta (ETD) of Ameland Inlet, a basin of the Wadden Sea in the Netherlands, as well as on three transects along the Dutch lower shoreface. With this campaign, as part of KustGenese2.0 (Coastal Genesis 2.0) and SEAWAD, we aimed to gain new knowledge on the processes driving...
Preprint
Full-text available
Abstract. Considering the likely increase of coastal flooding in Small Island Developing States (SIDS), coastal managers at the local and global level have been developing initiatives aimed at implementing Disaster Risk Reduction (DRR) measures and adapting to climate change. Developing science-based adaptation policies requires accurate coastal fl...
Article
Ameland inlet is centrally located in the chain of West Frisian Islands (the Netherlands). A globally unique dataset of detailed bathymetric charts starting in the early 19th century, and high-resolution digital data since 1986 allows for detailed investigations of the ebb-tidal delta morphodynamics and sediment bypassing over a wide range of scale...
Conference Paper
Full-text available
Sustainable management of barrier islands and tidal inlet systems requires a knowledge of sediment transport pathways throughout the system. This paper places in situ suspended sediment observations (obtained using a LISST) in context with seabed sediment samples and hydrodynamic measurements to identify such pathways. The results indicate two dist...
Article
Full-text available
Wave-induced flooding is a major coastal hazard on tropical islands fronted by coral reefs. The variability of shape, size, and physical characteristics of the reefs across the globe make it difficult to obtain a parameterization of wave run-up, which is needed for risk assessments. Therefore, we developed the HyCReWW metamodel to predict wave run-...
Article
Full-text available
This paper presents an application of the Bayesian belief network for coastal erosion management at the regional scale. A “Bayesian ERosion Management Network” (BERM-N) is developed and trained based on yearly cross-shore profile data available along the Holland coast. Profiles collected for over 50 years and at 604 locations were combined with inf...
Article
Several studies have reported the development of undular bores over fringing coral reefs (e.g, Gallagher, 1976; Nwogu and Demirbilek, 2010) but the importance of this phenomenon for reef hydrodynamics has never been studied. Yet, the transformation of a long wave (e.g., swell or infragravity wave) into an undular bore leads to significant modificat...
Poster
Full-text available
The curious undular bore // Propagates onward to shore // The energy flies // From low freqs to high // Until the wave front is no more (Poem presented as part of the "Climate Literacy: Engaging the Public and Inspiring Action Through Effective Science/Arts/Sustainability Communication II Posters" session)
Poster
Full-text available
The morphodynamic response of the Dutch Wadden Islands to the effects of climate change (e.g. sea level rise) or human interventions (e.g. nourishments) is closely tied to the evolution of the ebb-tidal deltas between them. To understand the fate of these ebb-tidal deltas, we must quantify the behaviour and transport patterns of sediment as it move...
Presentation
Full-text available
Bed sediment composition is fundamentally linked to the sediment transport pathways leading to and from a given location. To quantify this relationship, we here propose an analysis framework that examines sediment connectivity: the strength of a sediment transport pathway between two given points. Using Ameland Inlet as a case study, we find that f...
Poster
Full-text available
Sediment transport pathways are highly dependent on the grain size, especially in complex environments like ebb-tidal deltas where morphological change is driven by the interaction between waves and currents. This poster shares preliminary findings regarding sediment pathways of different grain sizes in Ameland Inlet, and outlines proposed future d...
Conference Paper
Full-text available
Rapid coastal erosion threatens Arctic coastal infrastructure, including communities and industrial installations. Erosion of permafrost depends on numerous processes, including thermal and mechanical behaviour of frozen and unfrozen soil, nearshore hydrodynamics, atmospheric forcing, and the presence of sea ice. The quantification and numerical mo...
Thesis
Full-text available
Low-lying tropical islands are highly vulnerable to the effects of sea-level rise and climate change. Most pressing is the threat posed to their fresh water supplies by wave-induced flooding. This thesis attempts to generalize previous site-specific studies of flooding on coral atolls and apply it in a framework that can be used for early warning s...

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Projects

Projects (4)
Project
The aim of this study is to tailor the SDGs, as a universally recognized policy framework, to assess the sustainability performance for coastal flood protection management to enhance climate‐resilient and adaptable coastal development.
Project
Coral reef-fronted coastlines are vulnerable to wave-induced flooding, a threat that is expected to increase with climate change and sea level rise. How can we overcome the challenges of predicting these floods, given the wide range of offshore forcing conditions, diverse morphology of coral reefs, and complexity of reef hydrodynamics? We propose a system (BEWARE) that uses process-based numerical wave model XBeach Non-Hydrostatic and Bayesian networks to predict runup and flood hazards on coral reef-lined coasts.