Mapping the Depths Uncertainty by Comparison between Multibeam Regular and Crosscheck Lines
Adriano Vieira de Souza, Cláudia Pereira Krueger · 2011
PreviousNext No Access12th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 15–18 August 2011Mapping the Depths Uncertainty by Comparison between Multibeam Regular and Crosscheck LinesAuthors: Adriano Vieira de SouzaCláudia Pereira KruegerAdriano Vieira de Souzafrom Brazilian Hydrographic Service and Cláudia Pereira Kruegerfrom Federal University of Paranáhttps://doi.org/10.1190/sbgf2011-377 SectionsAboutPDF/ePub ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinked InRedditEmail Abstract Maps and graphics are useful to approach the total vertical uncertainty and to evaluate the quality of the hydrographic survey. They are created supported by the Standards for Hydrographic Surveys, from International Hydrographic Organization (2008), and according to the analysis of comparison between multibeam regular and crosscheck lines. Complementary, one will be able to identify some biases that were not removed during the sensors' calibration. The methodology is based on the results of the analysis of two distinct —ASCII files generated after bathymetric data cleaning process; one from the regular lines and another from crosscheck lines. A script written in Matlab© language reads the files and produces some statistical results, such as maps, histograms and other graphics. That method was applied in two surveys performed at the Baía de Guanabara - Rio de Janeiro, in 2009-10. The results were satisfactory because it was able to give us a general idea on how the errors were distributed geographically and what kind of errors were recorded in raw data; even it was not capable to identify them quantitatively. Some positive aspects are related to the fact that, statistical graphics allow the analyst to identify and fix the problems that, unfortunately, are degrading the quality of the survey, such as, external bad beams, sound velocity, roll and pitch biases, etc. Keywords: shallow, water, mapping, navigationPermalink: https://doi.org/10.1190/sbgf2011-377FiguresReferencesRelatedDetails 12th International Congress of the Brazilian Geophysical Society & EXPOGEF, Rio de Janeiro, Brazil, 15–18 August 2011ISSN (online):2159-6832Copyright: 2011 Pages: 2223 publication data© 2011 Published in electronic format with permission by the Brazilian Geophysical SocietyPublisher:Society of Exploration Geophysicists HistoryPublished Online: 13 Mar 2014 CITATION INFORMATION Adriano Vieira de Souza and Cláudia Pereira Krueger, (2011), "Mapping the Depths Uncertainty by Comparison between Multibeam Regular and Crosscheck Lines," SEG Global Meeting Abstracts : 1829-1834. https://doi.org/10.1190/sbgf2011-377 Plain-Language Summary KeywordsshallowwatermappingnavigationPDF DownloadLoading ...