Relationship between foredune profile morphology and aeolian and marine dynamics: A conceptual model

Pellón, E.; Almeida, Laura Ribas de; González, Mauricio; Medina, Raúl

doi:10.1016/j.geomorph.2019.106984

Cited by 21 publications

(12 citation statements)

References 68 publications

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“…A narrowing of the beach occurred along with a foredune recovery [25,61,62]. The foredune will likely be eroded by waves when water levels with around a ten-year return period is reached, but it has had enough time to recover its long-term equilibrium shape [63]. Foredune recovery is a slow process that may take years to decades [64].…”

Section: Discussionmentioning

confidence: 99%

Cross-Shore Profile Evolution after an Extreme Erosion Event—Palanga, Lithuania

Kelpšaitė-Rimkienė

Parnell

Žaromskis

et al. 2021

JMSE

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We report cross-shore profile evolution at Palanga, eastern Baltic Sea, where short period waves dominate. Cross-shore profile studies began directly after a significant coastal erosion event caused by storm “Anatol”, in December of 1999, and continued for a year. Further measurements were undertaken sixteen years later. Cross-shore profile changes were described, and cross-shore transport rates were calculated. A K-means clustering technique was applied to determine sections of the profile with the same development tendencies. Profile evolution was strongly influenced by the depth of closure which is constrained by a moraine layer, and the presence of a groyne. The method used divided the profile into four clusters: the first cluster in the deepest water represents profile evolution limited by the depth of closure, and the second and third are mainly affected by processes induced by wind, wave and water level changes. The most intensive sediment volume changes were observed directly after the coastal erosion event. The largest sand accumulation was in the fourth profile cluster, which includes the upper beach and dunes. Seaward extension of the dune system caused a narrowing of the visible beach, which has led to an increased sand volume (accretion) being misinterpreted as erosion

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Section: Discussionmentioning

confidence: 99%

Cross-Shore Profile Evolution after an Extreme Erosion Event—Palanga, Lithuania

Kelpšaitė-Rimkienė

Parnell

Žaromskis

et al. 2021

JMSE

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“…These findings are in line with the common assumption that the vertical location of the dune toe is mostly dependent upon marine processes. For instance, the dune toe position has been related to the maximum total water level (TWL) that occurs every ten years 22 . The TWL is made up of the measured tide level, setup and swash 34 .…”

Section: Physical Processes Explain Regional Variations In Dune Toe Positionmentioning

confidence: 99%

Sea level rise outpaced by vertical dune toe translation on prograding coasts

IJzendoorn

Vries

Hallin

et al. 2021

Sci Rep

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Sea level is rising due to climate change and is expected to influence the development and dynamics of coastal dunes. However, the anticipated changes to coastal dunes have not yet been demonstrated using field data. Here, we provide evidence of dune translation that is characterized by a linear increase of the dune toe elevation on the order of 13–15 mm/year during recent decades along the Dutch coast. This rate of increase is a remarkable 7–8 times greater than the measured sea level rise. The observed vertical dune toe translation coincides with seaward movement of the dune toe (i.e., progradation), which shows similarities to prograding coasts in the Holocene both along the Dutch coast and elsewhere. Thus, we suspect that other locations besides the Dutch coast might also show such large ratios between sea level rise and dune toe elevation increase. This phenomenon might significantly influence the expected impact of sea level rise and climate change adaptation measures.

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“…Morphometrics of foredunes greatly contributes to understanding the relationship between aeolian and marine dynamics (de Almeida et al, 2019; Pellón et al, 2020). We, therefore, first focused on the morphometric features of the ridges within the study area.…”

Section: Methodsmentioning

confidence: 99%

Late-Holocene landscape evolution of a delta from foredune ridges: Seyhan Delta, Eastern Mediterranean, Turkey

et al. 2021

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The Çukurova Delta Complex, formed by the Seyhan, Ceyhan, and Berdan rivers, is the second-largest delta system in the Mediterranean. The delta complex is a major depocenter that contains sediments transported from the Taurus Mountain belt since the Miocene. Studies on the Quaternary landscape evolution of the Çukurova Delta Complex are scarce, and in particular, the Holocene evolution of the Seyhan Delta section of the Çukurova Delta Complex has been poorly understood. Sedimentological analysis, high-resolution digital elevation models derived using structure from motion, and optically stimulated luminescence dating of the foredune ridges in the Seyhan Delta help define the lesser-known nature of Late-Holocene paleoenvironmental and landscape evolution of the Seyhan section of the Çukurova Delta Complex. The foredune ridges provide evidence that the Akyatan Lagoon, one of Turkey’s largest lagoon, formed at the beginning of the last millennium. The ridges bordering the north and south of Tuzla Lagoon show that the lagoon completed its formation between the 11th and 14th centuries when the ancient delta was to the east. The Seyhan River flowed 10 km east from its current course until at least the 16th Century, and its ancient delta was active until that time. After the 16th Century, the Seyhan River shifted to its current course in the west and began to build the modern delta and the youngest foredune ridges were formed by a combination of aeolian and littoral processes. The contemporary delta continued to prograde until the construction of the Seyhan Dam in AD 1956. Since the construction of the Seyhan Dam, the delta shoreline at the river mouth retreated drastically and foredune formation stopped. In the past few decades, most of the foredune ridges have been eroded away by coastal processes and agricultural activities.

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Relationship between foredune profile morphology and aeolian and marine dynamics: A conceptual model

Cited by 21 publications

References 68 publications

Cross-Shore Profile Evolution after an Extreme Erosion Event—Palanga, Lithuania

Cross-Shore Profile Evolution after an Extreme Erosion Event—Palanga, Lithuania

Sea level rise outpaced by vertical dune toe translation on prograding coasts

Late-Holocene landscape evolution of a delta from foredune ridges: Seyhan Delta, Eastern Mediterranean, Turkey

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