Linking wave loads with the intensity of erosion along the coasts of Latvia

Soomere, Tarmo; Viška, Maija; Lapinskis, Jānis; Räämet, Andrus

doi:10.3176/eng.2011.4.06

Cited by 12 publications

(10 citation statements)

References 29 publications

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“…That part of the Baltic Sea coast is exposed to the westerly winds and storm surges. The relief of foredunes between the open coast of the Baltic Sea and the Gulf of Riga shores varies due to coastal dynamics, studied by several authors (Eberhards, Saltupe 1995, Povilanskas 2002, koltsova, Belakova 2009, Soomere et al 2011. The coast with foredune (white dune) complexes takes up 230 km (45%) of the shoreline, the dunes being interspersed by stretches of coastal meadows or narrow beaches bordered by forests or cliffs.…”

Section: Latvia: Long Sandy Coasts With Diverse Dune Formationsmentioning

confidence: 99%

Coastal Dunes of the Baltic Sea Shores: A Review

Łabuz

Grunewald

Bobykina

et al. 2018

Quaestiones Geographicae

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The article summarises results of studies conducted along the Baltic Sea sandy coasts by scientists involved in coastal dune research, and presents an attempt to describe the types and distribution of dune coasts. The Baltic Sea coasts feature lower and higher foredunes. The lowland behind the coastal dune belt is covered by wandering or stabilised inland dunes – transgressive forms, mainly parabolic or barchans. The source of sediment for dune development includes fluvioglacial sands from eroded coasts, river-discharged sand, and older eroded dunes. Due to the ongoing erosion and coastal retreat, many dunes have been eroded, and some are withdrawing onto the adjacent land. There are visible differences between the south-eastern, western, and northern parts of the Baltic Sea coast with respect to dune development. The entire southern and eastern coast abounds in sand, so the coastal dunes are large, formerly or currently wandering formations. The only shifting dunes are found at the Polish and the Russian–Lithuanian coasts on the Łebsko Lake Sandbar as well as on the Vistula and Curonian Spits. The very diverse shoreline of the south-western coast experiences a scarcity of larger sandy formations. Substantial parts of the Baltic Sea sandy coasts have been eroded or transformed by humans. The northern part of the Baltic Sea coast features mainly narrow and low sandy coasts (e.g. in Estonia). Further north, sandy dunes are virtually absent.

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Section: Latvia: Long Sandy Coasts With Diverse Dune Formationsmentioning

confidence: 99%

Coastal Dunes of the Baltic Sea Shores: A Review

Łabuz

Grunewald

Bobykina

et al. 2018

Quaestiones Geographicae

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“…The highest hydrodynamic force falls in the area between latitudes 57°00' and 57°30' where the wave closure depth reaches 6.58 m. To the south of this area the closure depth decreases and reaches a local minimum (4.35 m) near the border between Latvia and Lithuania (Soomere et al 2011). Measured orbital wave velocity at bottom squared has highest impact at 2 to 5 m depth, but decreases by 50% at 10 m depth and diminishes further with depth (Müller-Karulis et al 2007).…”

Section: Site Descriptionmentioning

confidence: 99%

Recruitment studies of the mussel Mytilus trossulus on artificial substrate near high energy shores of the north-eastern Baltic Sea

2017

EEB

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Ecological mussel farming in the Baltic Sea has gained attention due to ability of mussels to bind high concentrations of nitrogen and phosphorus in their tissues. Removal of mussels could serve as abatement of eutrophication. The Latvian coast of the Baltic Sea is one of the most exposed coastlines of the Baltic due to the highest wind and wave energy. Experimental units for mussel recruitment were placed in three locations at 15, 20 and 25 m depth assess the potential for mussel farming. The spawning maximum was observed in the middle of May, followed by recruitment in June. Recruitment of Mytilus was observed on all experimental units with higher densities at 6 to 10 m depth. Observations suggest that mussels can use artificial substrate for recruitment even near high energy shores. However, if mussel farming is to take place, submerged offshore farming techniques should be considered.

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“…The wind velocity reached 40 m/s in 1954 and 45 m/s in 1969. Such heavy storms, especially in the autumn-winter period when the water level is relatively high, pile up great water masses (Soomere et al, 2011). Under high water conditions, the surge can reach 2-3 m and cause severe damage along the coast.…”

Section: Geological Setting and Geological History Of The Areamentioning

confidence: 99%

Accumulation of heavy minerals in the eastern coast of the Gulf of Riga, south-western Estonia

Järvelill¹,

Kleesment²,

Raukas³

2015

Bull. Geol. Soc. Finland

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The Baltic Sea is characterised by tectonic conditions that cause its northern parts to lift and southern parts to sink. Our study area (eastern coast of the Gulf of Riga) has been rather stable for a long time. During transgressive phases in the course of the sea's invasion to the coast intensive mechanical and mineralogical differentiation of the sediments took place, causing the separation of heavy minerals. The largest concentrations of heavy minerals were found in transgressive sediments of the Litorina Sea. Their concentration was especially high in the Lemmeoja site (in some layers up to 83.7 % of the sediment). The goal of our research was to study the heavy mineral content and composition in different age sediments of the area and to find regularities in the accumulation processes through time. To achieve our aim we collected samples from 16 sites between Pärnu and Ikla in south-western Estonia. The heavy mineral content in the whole investigated area is high, amounting on average to about 5 %. The deposits of transgressive phases of the Baltic Sea are more reworked than those of the regressive phases and contain more heavy minerals. Our investigation of initial rocks allows to conclude that garnets and zircon originated mainly from the Devonian sandstones of the Aruküla and Narva regional stages, amphiboles and pyroxenes mainly from Quaternary deposits.Keywords (GeoRef Thesaurus, AGI): transgression, sea-level changes, heavy minerals, Baltic Sea, Gulf of Riga * Corresponding author e-mail: iisebel@hotmail.com AbstractAccumulation of heavy minerals in the eastern coast of the Gulf of Riga, south-western Estonia

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Linking wave loads with the intensity of erosion along the coasts of Latvia

Cited by 12 publications

References 29 publications

Coastal Dunes of the Baltic Sea Shores: A Review

Coastal Dunes of the Baltic Sea Shores: A Review

Recruitment studies of the mussel Mytilus trossulus on artificial substrate near high energy shores of the north-eastern Baltic Sea

Accumulation of heavy minerals in the eastern coast of the Gulf of Riga, south-western Estonia

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