Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/16043
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dc.contributor.authorBaptista, P.pt
dc.contributor.authorBastos, L.pt
dc.contributor.authorBernardes, C.pt
dc.contributor.authorCunha, T.pt
dc.contributor.authorDias, J.pt
dc.date.accessioned2016-08-30T17:21:39Z-
dc.date.issued2008-
dc.identifier.issn0749-0208pt
dc.identifier.urihttp://hdl.handle.net/10773/16043-
dc.description.abstractThe highly dynamic nature of some sandy shores with continuous morphological changes require the development of efficient and accurate methodological strategies for coastal hazard assessment and morphodynamic characterisation. During the past decades, the general methodological approach for the establishment of coastal monitoring programmes was based on photogrammetry or classical geodetic techniques. With the advent of new geodetic techniques, space-based and airborne-based, new methodologies were introduced in coastal monitoring programmes. This paper describes the development of a monitoring prototype that is based on the use of global positioning system (GPS). The prototype has a GPS multiantenna mounted on a fast surveying platform, a land vehicle appropriate for driving in the sand (four-wheel quad). This system was conceived to perform a network of shore profiles in sandy shores stretches (subaerial beach) that extend for several kilometres from which high-precision digital elevation models can be generated. An analysis of the accuracy and precision of some differential GPS kinematic methodologies is presented. The development of an adequate survey methodology is the first step in morphodynamic shore characterisation or in coastal hazard assessment. The sample method and the computational interpolation procedures are important steps for producing reliable three-dimensional surface maps that are real as possible. The quality of several interpolation methods used to generate grids was tested in areas where there were data gaps. The results obtained allow us to conclude that with the developed survey methodology, it is possible to Survey sandy shores stretches, under spatial scales of kilometers, with a vertical accuracy of greater than 0.10 m in the final digital elevation models.pt
dc.language.isoengpt
dc.publisherCoastal Education & Research Foundationpt
dc.relationFCT - PRAXIS 2/2.1/MAR/1743/95pt
dc.relationFCT - SFRH/BPD/20221/2004pt
dc.rightsrestrictedAccesspor
dc.subjectSurveying systemspt
dc.subjectMonitorisationpt
dc.subjectCoastal hazardspt
dc.subjectDEMspt
dc.titleMonitoring sandy shores morphologies by DGPS: a practical tool to generate digital elevation modelspt
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.firstPage1516pt
degois.publication.issue6pt
degois.publication.issue6-
degois.publication.lastPage1528pt
degois.publication.titleJournal of Coastal Researchpt
degois.publication.volume24pt
dc.date.embargo10000-01-01-
dc.relation.publisherversion10.2112/07-0861.1pt
dc.identifier.doi10.2112/07-0861.1pt
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