Characteristics and Structure of the Cumulonimbus Cloud
with Waterspout over the Gulf of Finland

The synonymization of species Chromadorita arctica Gagarin, 1999, syn. nov. from Novaya Zemlya and Ch. fennica Jensen, 1979 from the Gulf of Finland is proposed.

Download Full-text

PROBLEM OF HEAVY METAL SURFACE SEDIMENT CONTAMINATION IN THE EASTERN GULF OF FINLAND

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.21610/conferencearticle_58b4316eb2e6d ◽

2017 ◽

Author(s):

N Derugina ◽

А Grigoriev ◽

A Grigoriev ◽

Дарья Рябчук ◽

...

Keyword(s):

Heavy Metals ◽

Heavy Metal ◽

Bottom Sediments ◽

Late Holocene ◽

Sediment Contamination ◽

Gulf Of Finland ◽

Slow Decline ◽

Contamination Levels ◽

The Gulf Of Finland ◽

Neva Bay

This project defines the pre-industrial quantities of heavy metals in sediment sequences of the Late Holocene from the Eastern Gulf of Finland. A comparative analysis reveals differences and similarities in the current concentrations of heavy metals in bottom sediments and pre-industrial levels. It is found that the maximum concentrations of heavy metals in the bottom sediments of the Gulf of Finland and Neva Bay occurred in the period of 1950-1990. Since the 1990s, the trend has been a slow decline in the contamination levels; however, the concentrations of some heavy metals in bottom sediments remain high.

Download Full-text

AN ARTIFICIAL BEACH AS A MEANS FOR SEA COAST PROTECTION FROM STORM SURGES (BY THE EXAMPLE OF THE EASTERN GULF OF FINLAND)

Proceedings of International Conference "Managinag risks to coastal regions and communities in a changinag world" (EMECS'11 - SeaCoasts XXVI) ◽

10.21610/conferencearticle_58b4315f8fc73 ◽

2017 ◽

Author(s):

Igor Leontyev ◽

Tatiana Akivis ◽

Tatiana Akivis

Keyword(s):

Storm Surges ◽

Gulf Of Finland ◽

Beach Sand ◽

Medium Sand ◽

Material Loss ◽

Beach Width ◽

Intense Storm ◽

The Gulf Of Finland ◽

Beach Volume ◽

Sea Coast

A model of an artificial beach is suggested for protection of coasts under erosion due to intense storm surges. It is shown that the coarser beach sand results in decrease of the beach width and growth of nourishment volume. At the same time relative material loss due to long-shore sediment transport diminishes too. The model has been applied to three sections of the coasts of Kurortny district of S.-Petersburg (eastern part of the Gulf of Finland). It recommends medium sand for the beaches construction. Modeling of extreme storms effect shows only minor deformations for designed beach profiles. For the beaches more than 1 km long even in 30-50 years more than a half of the initial beach volume conserves without additional nourishment.

Download Full-text

Development of the Narva-Jõesuu beach, mineral composition of beach deposits and destruction of the pier, southeastern coast of the Gulf of Finland

Open Geosciences ◽

10.1515/geo-2019-0074 ◽

2019 ◽

Vol 11 (1) ◽

pp. 961-968

Author(s):

Johanna-Iisebel Järvelill

Keyword(s):

Mineral Composition ◽

Mineral Content ◽

Sandy Beach ◽

Heavy Minerals ◽

Gulf Of Finland ◽

Immersion Method ◽

Southeastern Coast ◽

Longshore Drift ◽

Favorable Conditions ◽

The Gulf Of Finland

Abstract Narva-Jõesuu lies at the eastern southeastern coast of the Gulf of Finland, at the Estonian and Russian border. The beach is influenced by heavy winds, waves and drift ice attacks, which are seriously changing the beach. It is the longest sandy beach in Estonia and longshore drift on this beach has induced favorable conditions for the separation of heavy minerals. The aims of the study were to describe the development of the coast, discuss the influence of the destructed pier, and to identify the mineral composition of beach sands. The dynamics of the coast were mainly through comparison with older topographic maps (from the beginning of the 20th century). For mineral analysis the immersion method was applied. The heavy mineral content was found to increase from east to west. The pier was built in Narva-Jõesuu in 1987/88 for protecting the coast, but it is now broken. Consequently, storms are crashing against the coast and erosion of the sandy shore has started. Therefore, the pier should be restored to avoid further beach destruction.

Download Full-text