Rónadh Cox
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View article: Understanding extreme-wave hazards on high-energy coasts requires a standardised approach to field data collection: analysis and recommendations
Understanding extreme-wave hazards on high-energy coasts requires a standardised approach to field data collection: analysis and recommendations Open
Coastal boulder deposits provide vital information on extreme wave events. They are crucial for understanding storm and tsunami impacts on rocky coasts, and for understanding long-term hazard histories. But study of these deposits is still…
View article: Hydrodynamic Modelling and Morphometric Assessment of Supratidal Boulder Transport on the Moroccan Atlantic Coast: A Dual-Site Analysis
Hydrodynamic Modelling and Morphometric Assessment of Supratidal Boulder Transport on the Moroccan Atlantic Coast: A Dual-Site Analysis Open
Coastal boulder deposits (CBDs) are important geomorphic indicators of extreme wave activity, yet integrated morphometric and hydrodynamic analyses remain limited along the Moroccan Atlantic coast. This study characterizes the morphology, …
View article: Understanding extreme-wave hazards on high-energy coasts requires a standardised approach to field data collection: Analysis and recommendations
Understanding extreme-wave hazards on high-energy coasts requires a standardised approach to field data collection: Analysis and recommendations Open
Coastal boulder deposits provide vital information on extreme wave events. They are crucial for understanding storm and tsunami impacts on rocky coasts, and for understanding long-term hazard histories. But study of these deposits is still…
View article: Advancing transdisciplinary research on Madagascar's grassy biomes to support resilience in ecosystems and livelihoods
Advancing transdisciplinary research on Madagascar's grassy biomes to support resilience in ecosystems and livelihoods Open
Grassy biomes (savanna and grasslands) are globally extensive and host a unique biodiversity that is of central importance to human livelihoods. We focus here on the island of Madagascar—a microcosm of the global tropics, covered in 80% gr…
View article: Coastal boulder deposit research three decades on: advances and outstanding questions
Coastal boulder deposit research three decades on: advances and outstanding questions Open
Coastal boulder deposits (CBD) are supratidal accumulations that can include clasts many metres in diameter. Emplaced by extreme waves (whether storms or tsunami) on high-energy rocky coasts, they take many forms, including isolated blocks…
View article: Setting expectations: how colonial narratives continue to shape our analysis of geomorphology in the Global South
Setting expectations: how colonial narratives continue to shape our analysis of geomorphology in the Global South Open
The world faces unprecedented land-use pressures, and one of our societal roles as geoscientists is to document, measure, and analyse landscape degradation, producing understanding that can mitigate or help prevent ongoing damage. We do th…
View article: Gullying and landscape evolution: Lavaka in Lac Alaotra, Madagascar shed light on rates of change and non-anthropogenic controls
Gullying and landscape evolution: Lavaka in Lac Alaotra, Madagascar shed light on rates of change and non-anthropogenic controls Open
Gully evolution remains poorly understood, largely because multidecadal analysis is lacking. Large gullies (called lavaka) that pepper Madagascar’s highlands are generally attributed to human impact; but longitudinal data are few, and anth…
View article: Lavaka (erosional gullies) provide productive patch environments for flora and farming in Madagascar's grassy highlands
Lavaka (erosional gullies) provide productive patch environments for flora and farming in Madagascar's grassy highlands Open
Societal Impact Statement Lavaka, large gullies in Madagascar, can cause problems for farmers and for infrastructure, but these features also have beneficial aspects that have generally been overlooked. They provide plant refugia, and comm…
View article: Field Studies of Megagravel Transport: Relevance for Coastal Infrastructure Engineering
Field Studies of Megagravel Transport: Relevance for Coastal Infrastructure Engineering Open
Extreme wave impacts on coastal infrastructure, including bridges, is a growing problem. Highest energy events are difficult to study because direct observations in real time are almost impossible. Also the non‐linear dynamics are difficul…
View article: The slow downwearing of Madagascar: Inferring patterns and controls on long‐term basin‐averaged erosion rates from <i>in situ</i><sup>10</sup>Be at the catchment and regional level
The slow downwearing of Madagascar: Inferring patterns and controls on long‐term basin‐averaged erosion rates from <i>in situ</i><sup>10</sup>Be at the catchment and regional level Open
Cosmogenic nuclide analysis of river sediment provides insight into catchment‐wide erosion rates and dynamics. Here, we investigate spatial patterns and controls on 10 Be‐inferred erosion rates in Madagascar, a moderately seismically activ…
View article: Field images of lavakas (gullies) in Madagascar
Field images of lavakas (gullies) in Madagascar Open
Curated set of lavaka (gully) field images, with descriptions and locations. This set of 688 images, taken in 2005 and 2006, provides both a comprehensive repository of the range of types of lavakas, in different stages of evolution and of…
View article: Field images of lavakas (gullies) in Madagascar
Field images of lavakas (gullies) in Madagascar Open
Curated set of lavaka (gully) field images, with descriptions and locations. This set of 688 images, taken in 2005 and 2006, provides both a comprehensive repository of the range of types of lavakas, in different stages of evolution and of…
View article: Boulder Dislodgement By Storms: What can we learn from the boulder fields Central-Western Ireland?
Boulder Dislodgement By Storms: What can we learn from the boulder fields Central-Western Ireland? Open
Coastal boulder deposits of western Ireland include over 1200 boulders and megagravel documented to have moved during storms in the winter of 2013 - 2014. The data come from seven areas on the mainland and outlying islands. The mass spectr…
View article: Deciphering the patterns and controls on long-term basin-averaged erosion rates from in-situ 10Be in Madagascar using random within-between modelling
Deciphering the patterns and controls on long-term basin-averaged erosion rates from in-situ 10Be in Madagascar using random within-between modelling Open
Cosmogenic nuclide analysis of river sediment provides insight into erosion and catchment dynamics. Studies on factors controlling spatial variations in long-term erosion rates have often focussed on tectonically active mountainous areas, …
View article: Surface‐To‐Ocean Exchange by the Sinking of Impact Generated Melt Chambers on Europa
Surface‐To‐Ocean Exchange by the Sinking of Impact Generated Melt Chambers on Europa Open
Impacts into icy bodies often generate near‐surface melt chambers and thermal perturbations that soften the ice. We explore the post‐impact evolution of non‐penetrating impacts into Europa's ice shell. Simulations of viscous ice deformatio…
View article: A Monte-Carlo-type simulation for exploring the initiation of motion criteria for boulder transport by storm waves
A Monte-Carlo-type simulation for exploring the initiation of motion criteria for boulder transport by storm waves Open
<p>The ability of storm waves to move very large boulders (tonnes to hundreds of tonnes) has been documented in recent years.&#160; However, the dynamics of wave-boulder interactions, and the criteria for initiation of transport,…
View article: ISROC&#8212;Inundation Signatures on ROcky Coastlines&#8212;A new Research Coordination Network targeting coastal boulder deposits
ISROC—Inundation Signatures on ROcky Coastlines—A new Research Coordination Network targeting coastal boulder deposits Open
<p>Intertidal and supratidal coastal boulder deposits (CBD) result from extreme marine inundation on rocky shores. They are important for understanding long-term coastal wave patterns, have predictive value for future events and can …
View article: Interplay Between Coastal Elevation and Wave Height Controls the Occurrence of Coastal Boulder Deposits in the Aran Islands, Ireland
Interplay Between Coastal Elevation and Wave Height Controls the Occurrence of Coastal Boulder Deposits in the Aran Islands, Ireland Open
Coastal boulder deposits (CBD) are wave-emplaced supratidal accumulations that record extreme inundation on rocky coasts. They are poorly understood but are of growing importance as we seek to better understand the extremes of wave power o…
View article: Proterozoic Tectonostratigraphy and Paleogeography of Central Madagascar Derived from Detrital Zircon U‐Pb Age Populations
Proterozoic Tectonostratigraphy and Paleogeography of Central Madagascar Derived from Detrital Zircon U‐Pb Age Populations Open
Detrital zircon U-Pb ages determined by SHRIMP distinguish two clastic sequences among Proterozoic metasedimentary rocks from central Madagascar. The Itremo Group is older: zircon data, stromatolite characteristics, and carbon isotope data…
View article: Storm Waves May Be the Source of Some “Tsunami” Coastal Boulder Deposits
Storm Waves May Be the Source of Some “Tsunami” Coastal Boulder Deposits Open
Coastal boulder deposits (CBD) provide what are sometimes the only remaining signatures of wave inundation on rocky coastlines; in recent decades, CBD combined with initiation of motion (IoM) analyses have repeatedly been used as primary e…
View article: Drumming the waves: conveying coastal geoscience with rhythm
Drumming the waves: conveying coastal geoscience with rhythm Open
<p>It is difficult to educate the public about geoscience and to create a message that will be heard in a noisy world. Coastal geoscience in particular&#8212;despite its growing importance as sea-level rises and storminess increa…
View article: Maximal Heights of Nearshore Storm Waves and Resultant Onshore Flow Velocities
Maximal Heights of Nearshore Storm Waves and Resultant Onshore Flow Velocities Open
Storm waves, after breaking or overtopping, generate strong onshore flows that do significant mechanical work, including eroding and transporting large boulders. The waves can be amplified on approach, and the flows themselves may be furth…
View article: Systematic Review Shows That Work Done by Storm Waves Can Be Misinterpreted as Tsunami-Related Because Commonly Used Hydrodynamic Equations Are Flawed
Systematic Review Shows That Work Done by Storm Waves Can Be Misinterpreted as Tsunami-Related Because Commonly Used Hydrodynamic Equations Are Flawed Open
Coastal boulder deposits (CBD), transported by waves at elevations above sea level and substantial distances inland, are markers for marine incursions. Whether they are tsunami or storm deposits can be difficult to determine, but this is o…
View article: Measuring Change Using Quantitative Differencing of Repeat Structure-From-Motion Photogrammetry: The Effect of Storms on Coastal Boulder Deposits
Measuring Change Using Quantitative Differencing of Repeat Structure-From-Motion Photogrammetry: The Effect of Storms on Coastal Boulder Deposits Open
Repeat photogrammetry is increasingly the go-too tool for long-term geomorphic monitoring, but quantifying the differences between structure-from-motion (SfM) models is a developing field. Volumetric differencing software (such as the open…
View article: Imbricated Coastal Boulder Deposits are Formed by Storm Waves, and Can Preserve a Long-Term Storminess Record
Imbricated Coastal Boulder Deposits are Formed by Storm Waves, and Can Preserve a Long-Term Storminess Record Open
Coastal boulder deposits (CBD) are archives of extreme wave events. They are emplaced well above high tide, and may include megagravel clasts weighing tens or even hundreds of tonnes. But do they represent storms or tsunami? Many are inter…