Baltijos jūros priekrantės dugno reljefo kaita Klaipėdos uosto prieigose XX a.

Žaromskis, Rimas; Gulbinskas, Saulius

doi:10.6001/geol-geogr.v2i3.3388

Cited by 1 publication

(1 citation statement)

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“…The Curonian Lagoon (Figure 1) is a shallow water body placed in the southeastern coasts of the Baltic Sea, separated from the sea by the Curonian Spit and connected to the open sea through only one narrow inlet in the north (Klaipėda Strait). The Klaipėda Strait is a harbor area where the depths vary from 8 to 14.5 m. The total lagoon surface area is about 1584 km 2 (with 413 km 2 in Lithuania), the volume 6.3 km 3 , the maximum length 93 km, the maximum width 46 km (in the southern part), and the mean water depth 3.8 m [27].…”

Section: Study Sitementioning

confidence: 99%

Sediment Transport Mechanisms in a Lagoon with High River Discharge and Sediment Loading

Mėžinė

Ferrarin

Vaičiūtė

et al. 2019

Water

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The aim of this study was to investigate the sediment dynamics in the largest lagoon in Europe (Curonian Lagoon, Lithuania) through the analysis of in situ data and the application of a sediment transport model. This approach allowed to identify the propagation pathway of the riverine suspended sediments, to map erosion-accumulation zones in the lagoon and calculate the sediment budget over a 13-year-long simulation. Sampled suspended sediment concentration data are important for understanding the characteristics of the riverine and lagoon sediments, and show that the suspended organic matter plays a crucial role on the sediment dynamics for this coastal system. The numerical experiments carried out to study sediment dynamics gave satisfactory results and the possibility to get a holistic view of the system. The applied sediment transport model with a new formula for settling velocity was used to estimate the patterns of the suspended sediments and the seasonal and spatial sediment distribution in the whole river–lagoon–sea system. The numerical model also allowed understanding the sensitivity of the system to strong wind events and the presence of ice. The results reveal that during extreme storm events, more than 11.4 × 106 kg of sediments are washed out of the system. Scenarios without ice cover indicate that the lagoon would have much higher suspended sediment concentrations in the winter season comparing with the present situation with ice. The results of an analysis of a long-term (13 years) simulation demonstrate that on average, 62% of the riverine sediments are trapped inside the lagoon, with a marked spatially varying distribution of accumulation zones.

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Section: Study Sitementioning

confidence: 99%