Application of Shore Sediments Accumulated in Navigation Channel for Restoration of Sandy Beaches around Pärnu City, SW Estonia, Baltic Sea
Sandy beaches high in recreation value make up 16% of the over 4000 km long shoreline of Estonia. The shore processes associated with climate change have remarkably accelerated over recent decades. Many sandy shores have suffered from strong erosion, including an excellent former beach at Valgeranna...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Journal of Marine Science and Engineering |
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| Online Access: | https://www.mdpi.com/2077-1312/12/3/394 |
| _version_ | 1797240440163926016 |
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| author | Hannes Tõnisson Rain Männikus Are Kont Valdeko Palginõmm Victor Alari Sten Suuroja Tiit Vaasma Kadri Vilumaa |
| author_facet | Hannes Tõnisson Rain Männikus Are Kont Valdeko Palginõmm Victor Alari Sten Suuroja Tiit Vaasma Kadri Vilumaa |
| author_sort | Hannes Tõnisson |
| collection | DOAJ |
| description | Sandy beaches high in recreation value make up 16% of the over 4000 km long shoreline of Estonia. The shore processes associated with climate change have remarkably accelerated over recent decades. Many sandy shores have suffered from strong erosion, including an excellent former beach at Valgeranna. The jetties, which were built in the 1860s to protect the navigation channel of Port Pärnu from clogging, have prevented natural sediment transport along the coast from south to north. At the same time, the sandy beach in Pärnu is expanding, and part of the sand accumulates with strong storms also in between the jetties, reducing the width of the shipping channel. The channel needs regular dredging, but, so far, the dredged sediment has been taken far away to the open sea and accumulated on the seabed. The current paper addresses the possibilities of using that sand for beach restoration in destructed and eroded areas. An overview of the applied methods and measurements during field studies is given. The results of modelling the processes of wave activity and sediment transport are discussed. The recycling of shore sediments is an important measure in sustainable coastal zone management. Different options and scenarios are analysed in order to find the most reasonable ways to bring sand back onto beaches and stabilize natural processes. Support from the state by working out respective laws and regulations would be motivating as well. |
| first_indexed | 2024-04-24T18:07:28Z |
| format | Article |
| id | doaj.art-d71ad32b3bdd4cb4b1b766fc8f802531 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-04-24T18:07:28Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-d71ad32b3bdd4cb4b1b766fc8f8025312024-03-27T13:49:09ZengMDPI AGJournal of Marine Science and Engineering2077-13122024-02-0112339410.3390/jmse12030394Application of Shore Sediments Accumulated in Navigation Channel for Restoration of Sandy Beaches around Pärnu City, SW Estonia, Baltic SeaHannes Tõnisson0Rain Männikus1Are Kont2Valdeko Palginõmm3Victor Alari4Sten Suuroja5Tiit Vaasma6Kadri Vilumaa7Institute of Ecology, Tallinn University, 10120 Tallinn, EstoniaDepartment of Cybernetics, Tallinn University of Technology, 19086 Tallinn, EstoniaInstitute of Ecology, Tallinn University, 10120 Tallinn, EstoniaInstitute of Ecology, Tallinn University, 10120 Tallinn, EstoniaDepartment of Marine Systems, Tallinn University of Technology, 19086 Tallinn, EstoniaGeological Survey of Estonia, 44314 Rakvere, EstoniaInstitute of Ecology, Tallinn University, 10120 Tallinn, EstoniaInstitute of Ecology, Tallinn University, 10120 Tallinn, EstoniaSandy beaches high in recreation value make up 16% of the over 4000 km long shoreline of Estonia. The shore processes associated with climate change have remarkably accelerated over recent decades. Many sandy shores have suffered from strong erosion, including an excellent former beach at Valgeranna. The jetties, which were built in the 1860s to protect the navigation channel of Port Pärnu from clogging, have prevented natural sediment transport along the coast from south to north. At the same time, the sandy beach in Pärnu is expanding, and part of the sand accumulates with strong storms also in between the jetties, reducing the width of the shipping channel. The channel needs regular dredging, but, so far, the dredged sediment has been taken far away to the open sea and accumulated on the seabed. The current paper addresses the possibilities of using that sand for beach restoration in destructed and eroded areas. An overview of the applied methods and measurements during field studies is given. The results of modelling the processes of wave activity and sediment transport are discussed. The recycling of shore sediments is an important measure in sustainable coastal zone management. Different options and scenarios are analysed in order to find the most reasonable ways to bring sand back onto beaches and stabilize natural processes. Support from the state by working out respective laws and regulations would be motivating as well.https://www.mdpi.com/2077-1312/12/3/394sediment recyclingbeach nourishmentshore processeswave climatePort of PärnuBaltic Sea |
| spellingShingle | Hannes Tõnisson Rain Männikus Are Kont Valdeko Palginõmm Victor Alari Sten Suuroja Tiit Vaasma Kadri Vilumaa Application of Shore Sediments Accumulated in Navigation Channel for Restoration of Sandy Beaches around Pärnu City, SW Estonia, Baltic Sea Journal of Marine Science and Engineering sediment recycling beach nourishment shore processes wave climate Port of Pärnu Baltic Sea |
| title | Application of Shore Sediments Accumulated in Navigation Channel for Restoration of Sandy Beaches around Pärnu City, SW Estonia, Baltic Sea |
| title_full | Application of Shore Sediments Accumulated in Navigation Channel for Restoration of Sandy Beaches around Pärnu City, SW Estonia, Baltic Sea |
| title_fullStr | Application of Shore Sediments Accumulated in Navigation Channel for Restoration of Sandy Beaches around Pärnu City, SW Estonia, Baltic Sea |
| title_full_unstemmed | Application of Shore Sediments Accumulated in Navigation Channel for Restoration of Sandy Beaches around Pärnu City, SW Estonia, Baltic Sea |
| title_short | Application of Shore Sediments Accumulated in Navigation Channel for Restoration of Sandy Beaches around Pärnu City, SW Estonia, Baltic Sea |
| title_sort | application of shore sediments accumulated in navigation channel for restoration of sandy beaches around parnu city sw estonia baltic sea |
| topic | sediment recycling beach nourishment shore processes wave climate Port of Pärnu Baltic Sea |
| url | https://www.mdpi.com/2077-1312/12/3/394 |
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