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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Studie i materialrörelser orsakade av fartygsvågor

Bjärås, Johan January 2014 (has links)
Examensarbetets målsättning var att studera de materialrörelser som uppkommer i direkt anslutning till stranden genom påverkan av fartygsvågor. Intressant var just att studera sådant material som Daleke et al (1989) finner en överensstämmelse med – mellan sina iakttagelser och en felaktig version av Hjulströmskurvan – men även annat material skulle studeras. Arbetet utfördes i Furusundsleden och i farleden vid Lidingö där trafiken av Finlandsfärjor är tät.I farleder som till vattenvolym är begränsade uppstår kraftiga vattenrörelser, sugeffekter förutom de vanliga svallvågor som bryter mot stranden. Dessa båda typer av vattenrörelser påverkar materialet längs stränderna. / The target for this master thesis was to study the movements of material that appears in direct connection to the shore as a result of ship wave influence. Of specific interest was to study the type of material that Daleke et al (1989) finds a compliance with – between their observations and an erroneous version of the Hjulström diagram – but also other material should be studied. The field work was performed in Furusundsleden fairway and in the fairway adjacent to Lidingö, where the Finland-ferry traffic is dense.In fairways such as this where the volume of water is confined there is a creation of powerful water movements, drawdowns, aside from the common ship backwash waves. Both these types of water movements affect the material along the shore.

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