The effect of coastal landform development on decadal-to millennial-scale longshore sediment fluxes: Evidence from the Holocene evolution of the central mid-Atlantic coast, USA

Shawler, Justin L.; Hein, Christopher J.; Obara, Chloe A.; Robbins, Mahina; Huot, Sébastien; Fenster, Michael S.

doi:10.1016/j.quascirev.2021.107096

Cited by 11 publications

(14 citation statements)

References 106 publications

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“…A high-resolution sedimentary archive from Mechelinki provides an opportunity to compare factors controlling extreme storm surge flooding, including sea-level change and the development of coastal landforms, inherently associated with the sediment budget 8 , 38 , 39 , within the two periods, each of them spanning approximately 700 years. The timing of enhanced storminess between 3.6 and 2.9 ka BP depicted from Mechelinki sedimentary archive fits into the broad scheme of Holocene storm periods for NW Europe based on Seine estuary sedimentary archive and Mont-Saint-Michel Bay in northern France 40 .…”

Section: Discussionmentioning

confidence: 99%

“…Catastrophic storm surge flooding is mainly associated with inundation regime. The susceptibility of a given coast to storm surge flooding may change in time due to several factors, among which are sea-level rise, storminess, as well as coastal landform development associated with short-timescale sediment supply changes 1 , 8 , 9 . However, knowledge of the role of these controlling factors is limited and can be assessed only if changes in other factors, such as sediment budget changes, tides, bathymetry, and wave fetch length, can be accounted for.…”

Section: Introductionmentioning

confidence: 99%

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Controls on coastal flooding in the southern Baltic Sea revealed from the late Holocene sedimentary records

Leszczyńska

Stattegger

Moskalewicz

et al. 2022

Sci Rep

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Climate change and related sea-level rise pose significant threats to lowland coasts. However, the role of key controlling factors responsible for the frequency and landward extent of extreme storm surges is not yet fully understood. Here, we present a high-resolution sedimentary record of extreme storm surge flooding from the non-tidal southern Baltic Sea, spanning two periods: 3.6–2.9 ka BP and 0.7 ka BP until present. Sediments from coastal wetland, including sandy event layers, were analyzed by sedimentological (grain size, loss-on-ignition, micromorphology), geochronological (14C), geochemical (XRF), mineralogical (heavy minerals) and micropaleontological (diatoms) methods. The results show that both periods were characterized by high-frequency of storm surge flooding, in order of 1.3–4.2 events per century. These periods correlate with phases of enhanced storminess in northwest Europe and took place during both rising and fluctuating sea levels. The study shows that the frequency and landward extent of coastal inundation, largely depended on the development of natural barriers (e.g. beach ridges and aeolian foredunes). Thus, in the context of the future coastal storm-surge hazard, the protection of existing coastal barriers and their morphology is essential.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Controls on coastal flooding in the southern Baltic Sea revealed from the late Holocene sedimentary records

Leszczyńska

Stattegger

Moskalewicz

et al. 2022

Sci Rep

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“…Collectively, 5. Characteristic features of spit bar systems, based on Nielsen et al (1988), Rasmussen and Dybkjaer (2005), Lindhorst et al (2008), Shukla et al (2008), Rasmussen et al (2010), Tillman and Wunderlich (2011, Reiman et al (2012), Billy et al (2014), Clemmensen et al (2014), Nehyba andRoetzel (2021), Pellerin Le Bas et al (2022), Shawler et al (2021), andSpaggiari andBordy (2023). 1clay; 2silt (mud); 3sand; 4granule; 5gravel; 6pebble; 7cobble; 8clay intercalations; 9clay intraclasts; 10current ripples; 11wave ripples; 12ripple cross-lamination; 13dune cross-bedding; 14trough cross-bedding; 15low angle cross-bedding; 16large scale foreset cross-bedding; 17hummocky cross-bedding (HCS?…”

Section: Sedimentology Of the Uppermost Devět Křížů Sandstonementioning

confidence: 99%

Spit bar deposits from the Upper Cretaceous (Cenomanian) transgressive sequence in NE Bohemia (Czechia)

Chrząstek,

Wojewoda

2024

Acta Geologica Polonica

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We propose a spit bar setting as the possible palaeoenvironment of the basal Late Cretaceous transgressive sequence in NW Bohemia. A new Cenomanian transgression model for the Bohemian Basin is also proposed. The uppermost Devět Křížů Sandstone, which has been conventionally referred to the Bohdašín Formation, probably represents the middle or lower upper Cenomanian (Upper Cretaceous), not the Triassic as previously supposed. We assume that this controversial unit was deposited before the main latest Cenomanian–early Turonian transgression. The spit bars were likely overgrown by vascular plants during their emergence in the late Cenomanian, and then inundated during the latest Cenomanian and early Turonian transgressive phases. The studied deposits had been intensively bioturbated, and the cf. Taenidium suite was recognized for the first time in them alongside the Thalassinoides assemblage (T. paradoxicus, T. suevicus, Thalassinoides isp., cf. Thalassinoides), which are characteristic of the Scoyenia and Glossifungites ichnofacies, respectively. The bioturbated, rhizolith-bearing horizon was presumably a paleosol.

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“…One approach is to decode the record of the barrier state change from relict subaerial morphology (Ciarletta et al, 2019c(Ciarletta et al, , 2021, a process which is more regularly applied in strand plain systems (Bristow and Pucillo, 2006;Nooren et al, 2017;Oliver et al, 2019). Barrier islands can also retain an abundance of relict features, which have been used to illuminate past evolution and drivers of morphologic change (Billy et al, 2013(Billy et al, , 2014Raff et al, 2018;Shawler et al, 2019Shawler et al, , 2021b. Such efforts typically include conventional morphostratigraphic investigations in the form of core analyses and ground-penetrating radar scans, which can provide additional sedimentological and structural information to help reconstruct past barrier environments.…”

Section: Introductionmentioning

confidence: 99%

Implications for the resilience of modern coastal systems derived from mesoscale barrier dynamics at Fire Island, New York

Ciarletta,

Miselis,

Bernier

et al. 2024

Earth Surf. Dynam.

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Abstract. Understanding the response of coastal barriers to future changes in rates of sea level rise, sediment availability, and storm intensity/frequency is essential for coastal planning, including socioeconomic and ecological management. Identifying drivers of past changes in barrier morphology, as well as barrier sensitivity to these forces, is necessary to accomplish this. Using remote sensing, field, and laboratory analyses, we reconstruct the mesoscale (decades–centuries) evolution of central Fire Island, a portion of a 50 km barrier island fronting Long Island, New York, USA. We find that the configuration of the modern beach and foredune at Fire Island is radically different from the system's relict morphostratigraphy. Central Fire Island is comprised of at least three formerly inlet-divided rotational barriers with distinct subaerial beach and dune–ridge systems that were active prior to the mid-19th century. Varying morphologic states reflected in the relict barriers (e.g., progradational and transgressive) contrast with the modern barrier, which is dominated by a tall and nearly continuous foredune and is relatively static, except for erosion and drowning of its fringing marsh. We suggest that this state shift indicates a transition from a regime dominated by inlet-mediated gradients in alongshore sediment availability to one where human impacts exerted greater influence on island evolution from the late 19th century onward. The retention of some geomorphic capital in Fire Island's relict subaerial features combined with its static nature renders the barrier increasingly susceptible to narrowing and passive submergence. This may lead to an abrupt geomorphic state shift in the future, a veiled vulnerability that may also exist in other stabilized barriers.

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The effect of coastal landform development on decadal-to millennial-scale longshore sediment fluxes: Evidence from the Holocene evolution of the central mid-Atlantic coast, USA

Cited by 11 publications

References 106 publications

Controls on coastal flooding in the southern Baltic Sea revealed from the late Holocene sedimentary records

Controls on coastal flooding in the southern Baltic Sea revealed from the late Holocene sedimentary records

Spit bar deposits from the Upper Cretaceous (Cenomanian) transgressive sequence in NE Bohemia (Czechia)

Implications for the resilience of modern coastal systems derived from mesoscale barrier dynamics at Fire Island, New York

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