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Difference in Particle Transport Between Two Coastal Areas in the Baltic Sea Investigated with High-Resolution Trajectory Modeling
Univ Gothenburg, Dept Biol & Environm Sci, Gothenburg, Sweden.
Stockholm University, Faculty of Science, Department of Meteorology .
2013 (English)In: Ambio, ISSN 0044-7447, Vol. 42, no 4, SI 455-463 p.Article in journal (Refereed) Published
Abstract [en]

A particle-tracking model based on high-resolution ocean flow data was used to investigate particle residence times and spatial distribution of settling sediment for two geo-morphologically different Swedish coastal areas. The study was a part of a safety assessment for the location of a future nuclear-waste repository, and information about the particle-transport patterns can contribute to predictions of the fate of a possible leakage. It is also, to our knowledge, the first time particle-transport differences between two coastal areas have been quantified in this manner. In Forsmark, a funnel-shaped bay shielded by a number of islands, the average residence time for clay particles was 5 times longer than in the modeled part of Simpevarp, which is open to the Baltic Sea. In Forsmark, < 10 % of the released particles left the domain compared to 60-80 % in Simpevarp. These site-specific differences will increase over time with the differences in land uplift between the areas.

Place, publisher, year, edition, pages
Netherlands: Springer, 2013. Vol. 42, no 4, SI 455-463 p.
Keyword [en]
sediment, particle transport, particle-tracking model, resuspension, Lagrangian, trajectories
National Category
Oceanography, Hydrology, Water Resources Geosciences, Multidisciplinary Environmental Engineering
Research subject
Atmospheric Sciences and Oceanography
URN: urn:nbn:se:su:diva-75604DOI: 10.1007/s13280-013-0397-3ISI: 000318285100009OAI: diva2:517416


Available from: 2012-04-23 Created: 2012-04-23 Last updated: 2013-06-13Bibliographically approved
In thesis
1. Applications of ocean transport modelling
Open this publication in new window or tab >>Applications of ocean transport modelling
2012 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

The advective motion of seawater governs the transport of almost everything, animate or inanimate, present in the ocean and those lacking the ability to outswim the currents have to follow the flow. This makes modelling of advective ocean transports a powerful tool in various fields of science where a displacement of something over time is studied. The present thesis comprises four different applications of ocean-transport modelling, ranging from large-scale heat transports to the dispersion of juvenile marine organisms. The aim has been to adapt the method not only to the object of study, but also to the available model-data sets and in situ-observations.

  • The first application in the thesis is a study of the oceanic heat transport. It illustrates the importance of wind forcing for not only the heat transport from the Indian to the Atlantic Ocean, but also for the net northward transport of heat in the Atlantic.
  • In the next study focus is on the particle-transport differences between an open and a semi-enclosed coastal area on the Swedish coast of the Baltic Sea. The modelled patterns of sedimentation and residence times in the two basins are examined after particles having been released from a number of prescribed point sources.
  • In the two final studies the transport-modelling framework is applied within a marine-ecology context and the transported entities are larvae of some Scandinavian sessile and sedentary species and non-commercial fishes (e.g. the bay barnacle, the blue mussel, the shore crab and the gobies). The effects of depth distribution of dispersing larvae on the efficiency of the Marine Protected Areas in the Baltic Sea are examined. Further, the diversity in dispersal and connectivity depending on vertical behaviour is modelled for regions with different tidal regimes in the North Sea, the Skagerrak and the Kattegat.

The spatial scales dealt with in the studies varied from global to a highly resolved 182-metres grid. The model results, excepting those from the global study, are based on or compared with in situ-data.

Place, publisher, year, edition, pages
Stockholm: Department of Meteorology, Stockholm University, 2012. 40 p.
ocean transport modelling, connectivity, particle-tracking, sediment transport, Forsmark, marine protected areas, MPA, stream functions, heat flux, wind forcing, Carcinus maenas
National Category
Oceanography, Hydrology, Water Resources
Research subject
Atmospheric Sciences and Oceanography
urn:nbn:se:su:diva-75344 (URN)978-91-7447-496-1 (ISBN)
Public defence
2012-06-01, Nordenskiöldsalen, Geovetenskapens hus, Svante Arrhenius väg 12, Stockholm, 10:00 (English)

At the time of the doctoral defense, the following papers were unpublished and had a status as follows: Paper 2: Submitted. Paper 3: Submitted. 4: Manuscript.

Available from: 2012-05-10 Created: 2012-04-16 Last updated: 2012-05-02Bibliographically approved

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