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New methods for measuring ice ridges and ice channels in full-scale Oikkonen, Annu ; Heinonen, Teemu ; Pötrönen, Jani

Av: Medverkande: Serie: Research report ; 92Utgivningsinformation: Helsingfors Sjöfartsverket, 2016; Sjöfartsstyrelsen [Finland], ; Styrelsen för vintersjöfartsforskning, Beskrivning: 21 sISBN:
  • 9769523111639
Ämnen: Onlineresurser: Abstrakt: This report presents the results of a research project on determining ice ridge and brash ice channel profiles using laser scanning and single-beam sonar instruments. Surface features are measured by laser scanning, while submerged parts of the ice features are measured using sonar. Two ice ridges and one brash ice channel were measured both with the proposed method of using combined laser scanning and sonar and by drilling for validation. The proposed method was found to be significantly faster than drilling and to give promising results.
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This report presents the results of a research project on determining ice ridge and brash ice channel profiles using laser scanning and single-beam sonar instruments. Surface features are measured by laser scanning, while submerged parts of the ice features are measured using sonar. Two ice ridges and one brash ice channel were measured both with the proposed method of using combined laser scanning and sonar and by drilling for validation. The proposed method was found to be significantly faster than drilling and to give promising results.