The origin of centennial- to millennial-scale chronological gaps in storm emplaced beach ridge plains

Nott, Jonathan; Forsyth, Anthony J.; Rhodes, E. J.; O’Grady, Damien

doi:10.1016/j.margeo.2015.05.011

Cited by 19 publications

(12 citation statements)

References 37 publications

(86 reference statements)

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“…Nott et al . () reported the scarping and flattening of Queensland beaches in a post‐cyclone survey after Tropical Cyclone Yasi. The common presence of the truncation surfaces in the GPR profiles of Cowley Beach thus indicates that a beach scarp is generated during storm‐wave conditions associated with cyclones.…”

Section: Discussionmentioning

confidence: 97%

“…Nott et al ., ; Nott, ). The post‐cyclone survey after TC Yasi confirmed that debris and a 10 to 60 cm thick sand layer were emplaced on the soil that caps Ridge 1 at Cowley Beach (Nott et al ., , ). Thus, cyclone‐generated shoreline regimes contribute not only to the erosion of the beach face/berm, which results in a scarp in the beach, but also to the vertical accretion of the beach ridges.…”

Section: Discussionmentioning

confidence: 99%

“…Tidally modified beaches with a distinctive low-tide terrace (Masselink & Short, 1993;Short, 2006) like Cowley Beach, tend to show relatively large topographic changes caused by storm erosion (Masselink & van Heteren, 2014). Nott et al (2015) reported the scarping and flattening of Queensland beaches in a post-cyclone survey after Tropical Cyclone Yasi. The common presence of the truncation surfaces in the GPR profiles of Cowley Beach thus indicates that a beach scarp is generated during storm-wave conditions associated with cyclones.…”

Section: Beach Sedimentationmentioning

confidence: 99%

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Coarse‐sand beach ridges at Cowley Beach, north‐eastern Australia: Their formative processes and potential as records of tropical cyclone history

et al. 2017

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Storm surges generated by tropical cyclones have been considered a primary process for building coarse-sand beach ridges along the north-eastern Queensland coast, Australia. This interpretation has led to the development of palaeotempestology based on the beach ridges. To better identify the sedimentary processes responsible for these ridges, a high-resolution chronostratigraphic analysis of a series of ridges was carried out at Cowley Beach, Queensland, a meso-tidal beach system with a >3 m tide range. Optically stimulated luminescence ages indicate that 10 ridges accreted seaward over the last 2500 to 2700 years. The ridge crests sit +3Á5 to 5Á1 m above Australian Height Datum (ca mean sea-level). A ground-penetrating radar profile shows two distinct radar facies, both of which are dissected by truncation surfaces. Hummocky structures in the upper facies indicate that the nucleus of the beach ridge forms as a berm at +2Á5 m Australian Height Datum, equivalent to the fair-weather swash limit during high tide. The lower facies comprises a sequence of seaward-dipping reflections. Beach progradation thus occurs via fair-weather-wave accretion of sand, with erosion by storm waves resulting in a sporadic sedimentary record. The ridge deposits above the fair-weather swash limit are primarily composed of coarse and medium sands with pumice gravels and are largely emplaced during surge events. Inundation of the ridges is more likely to occur in relation to a cyclone passing during high tide. The ridges may also include an aeolian component as cyclonic winds can transport beach sand inland, especially during low tide, and some layers above +2Á5 m Australian Height Datum are finer than aeolian ripples found on the backshore. Coarse-sand ridges at Cowley Beach are thus products of fair-weather swash and cyclone inundation modulated by tides. Knowledge of this composite depositional process can better inform the development of robust palaeoenvironmental reconstructions from the ridges.

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Section: Discussionmentioning

confidence: 97%

Section: Discussionmentioning

confidence: 99%

Section: Beach Sedimentationmentioning

confidence: 99%

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Coarse‐sand beach ridges at Cowley Beach, north‐eastern Australia: Their formative processes and potential as records of tropical cyclone history

et al. 2017

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“…A great number of coastlines in the world are backed by a single or a group of ridges of varying heights and widths (Nott et al, 2015). Coastal plains may experience progradation or recession, as a function of the sediment budget, which will, naturally, affect the morphology of the ridges within (Psuty, 1988).…”

Section: Introductionmentioning

confidence: 99%

“…Instead, they rely on dating techniques and on well-known climatic episodes to establish a one-toone relation between climate and ridge morphology (e.g. Alternative approaches focused on the identification of erosional and depositional surfaces, left by major storms and identified in the sediment record by the presence of contrasting textures, compositions and stratigraphical characteristics (Buynevich et al, 2007;Tamura, 2012;Nott et al, 2015;Tamura et al, 2018). Lampe and Lampe (2018) found a correlation between shoreline progradation rates, ridge height and the North Atlantic Oscillation (NAO) in a German beach ridge plain.…”

Section: Introductionmentioning

confidence: 99%

Coastal ridge constructive processes at a multi‐decadal scale in Barreta Island (southern Portugal)

Herrero

Kombiadou

2019

Earth Surf Processes Landf

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Multiple ridges across prograding coasts may display variable geometries, commonly expressed through varying elevations. Changes in ridge elevation have been traditionally related to the occurrence of fluctuating progradation rates, which might, in turn, be driven by shifting environmental conditions.Here, we explore the geometry and growth mechanisms of multiple ridges, generated at Barreta Island (Ria Formosa, southern Portugal), as a consequence of the rapid progradation of the island over the last 70 years, following the artificial fixation of the downdrift Faro-Olhão inlet with jetties in 1955. The variability in the morphology of these features was analysed in combination with available wind and wave data, in order to better distinguish growth mechanisms and understand the main parameters determining the final geometry of the observed ridges.The results suggest that (1) most of the identified ridges fall in the beach ridge classification, as they have been mostly built by marine processes, and (2) the parameters derived from, or closely related to wave climate variability (e.g. progradation rates, storm occurrence) can jointly explain most of the observed morphological changes, while aeolian processes played a secondary role. Indeed, ridge geometry appears mainly controlled by progradation rates, with higher ridges associated with lower progradation rates. Progradation rate, in turn, is mostly related to longshore wave power, storminess, and the occurrence storm groups. Yet, the final configuration of ridges can also be affected by runup levels and onshore winds. Therefore, establishing the relation between ridge geometry and wave climate is not a straightforward task, because of the complex processes and interactions that control coastal morphodynamics.

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Characterization of (paleo)lacustrine landforms using sedimentological and portable OSL investigations at Schweriner See, north‐eastern Germany

Adolph

Lampe

Lorenz

et al. 2021

Earth Surf Processes Landf

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We investigated four subaerial (paleo)lacustrine landforms at the north‐eastern shoreline of Schweriner See, north‐eastern Germany. These included two beach ridges, one subaerial nearshore bar and a silting up sequence located close to a fossil cliff, which marks the former maximum extent of Schweriner See. We used luminescence profiling with a SUERC portable OSL device (POSL) on all four sediment sequences in combination with sedimentological investigations such as grain size, loss‐on‐ignition and magnetic susceptibility to provide information on the various formations in a lacustrine depositional environment. The POSL reader was used on pre‐treated polymineral samples to gain an insight into luminescence distribution within the individual sediment sequences, but also among the four sequences. POSL proved valuable to understand depositional processes, which were not visible in lithology or sedimentological parameters. With somewhat larger uncertainty this method provides relative chronologies of the sediment sequences. Additionally, we carried out radiocarbon dating and full optical stimulated luminescence (OSL) dating to establish a chronological framework. OSL ages proved to be more reliable to date beach ridges in this setting than radiocarbon samples, which were severely influenced by sediment reworking. This combined approach of sedimentological analyses, luminescence profiling and absolute age determinations revealed details in depositional processes at Schweriner See which otherwise would have remained undetected. Furthermore, it helped to set these subaerial (paleo)lacustrine landforms in a chronological framework.

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The origin of centennial- to millennial-scale chronological gaps in storm emplaced beach ridge plains

Cited by 19 publications

References 37 publications

Coarse‐sand beach ridges at Cowley Beach, north‐eastern Australia: Their formative processes and potential as records of tropical cyclone history

Coarse‐sand beach ridges at Cowley Beach, north‐eastern Australia: Their formative processes and potential as records of tropical cyclone history

Coastal ridge constructive processes at a multi‐decadal scale in Barreta Island (southern Portugal)

Characterization of (paleo)lacustrine landforms using sedimentological and portable OSL investigations at Schweriner See, north‐eastern Germany

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