TY - JOUR

T1 - Coastal Dunes of the Maida River Estuary Area (Zimniy Coast of the White Sea): Spatial Distribution and Evolution Patterns

AU - Repkina, T.Y.

AU - Leontiev, P.A.

AU - Krekhov, A.K.

AU - Vyatkin, E.D.

AU - Orlov, A.V.

AU - Lugovoy, N.N.

AU - Shilova, O.S.

N1 - Export Date: 18 November 2024 Сведения о финансировании: Russian Science Foundation, RSF, 22-27-00499 Сведения о финансировании: Russian Science Foundation, RSF Текст о финансировании 1: The study was supported by the Russian Science Foundation, grant no. 22-27-00499.

PY - 2024

Y1 - 2024

N2 - Abstract: We present new data of White Sea Coast dynamics within NE of the Gorlo Strait that were generated by satellite images, geomorphological and ground penetrating radar (GPR) profiling, aerial photography, and topographic surveys of coastal terraces and dunes. Our paleogeomorphological studies, supported by laboratory findings (diatom analysis and 14C dating), allowed us to reconstruct the morphodynamics of coastal and aeolian landforms. The obtained reconstruction enabled the evaluation of relative sea level (RSL) changes and the evolution of coastal landforms over the past ~ 3.7 cal ka BP. According to our research, sand was supplied to coastal zone and coastal dunes through scarp erosion (0.5–3.7 m/year) as well as from the shoreface, while the role of alluvial runoff is insignificant. The largest dune massifs were formed in the areas of longshore drift (from NE to SW) discharge. At the mouth of the Maida River, the barrier spit and foredune plain have been evolving from the end of the Holocene transgression (∼3.7–2.3 cal ka BP). The mean high water at this time was slightly higher (up to ∼2.5 m a.s.l.), and coastal processes were significantly more intense than current ones. Then, against a decrease in sea level and weakening sediment flows, the growth of the spit slowed. The ancient foredunes were stabilized by vegetation. Aeolian processes were activated ∼2.1 and after ∼0.8–0.7 cal ka BP. © Pleiades Publishing, Inc. 2024. ISSN 0001-4370, Oceanology, 2024, Vol. 64, No. 5, pp. 717–730. Pleiades Publishing, Inc., 2024.

AB - Abstract: We present new data of White Sea Coast dynamics within NE of the Gorlo Strait that were generated by satellite images, geomorphological and ground penetrating radar (GPR) profiling, aerial photography, and topographic surveys of coastal terraces and dunes. Our paleogeomorphological studies, supported by laboratory findings (diatom analysis and 14C dating), allowed us to reconstruct the morphodynamics of coastal and aeolian landforms. The obtained reconstruction enabled the evaluation of relative sea level (RSL) changes and the evolution of coastal landforms over the past ~ 3.7 cal ka BP. According to our research, sand was supplied to coastal zone and coastal dunes through scarp erosion (0.5–3.7 m/year) as well as from the shoreface, while the role of alluvial runoff is insignificant. The largest dune massifs were formed in the areas of longshore drift (from NE to SW) discharge. At the mouth of the Maida River, the barrier spit and foredune plain have been evolving from the end of the Holocene transgression (∼3.7–2.3 cal ka BP). The mean high water at this time was slightly higher (up to ∼2.5 m a.s.l.), and coastal processes were significantly more intense than current ones. Then, against a decrease in sea level and weakening sediment flows, the growth of the spit slowed. The ancient foredunes were stabilized by vegetation. Aeolian processes were activated ∼2.1 and after ∼0.8–0.7 cal ka BP. © Pleiades Publishing, Inc. 2024. ISSN 0001-4370, Oceanology, 2024, Vol. 64, No. 5, pp. 717–730. Pleiades Publishing, Inc., 2024.

KW - coastal dunes

KW - foredune plains

KW - Holocene

KW - morphodynamics

KW - relative sea level

KW - White Sea

U2 - 10.1134/S0001437024700395

DO - 10.1134/S0001437024700395

M3 - статья

VL - 64

SP - 717

EP - 730

JO - Oceanology

JF - Oceanology

SN - 0001-4370

IS - 5

ER -