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TitleEvaluating nearshore mapping capabilities of an autonomous kayak
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LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorPilegard, T; Dohner, S; Trembanis, A
SourceProgram and abstracts: 2017 GeoHab Conference, Dartmouth, Nova Scotia, Canada; by Todd, B JORCID logo; Brown, C J; Lacharité, M; Gazzola, V; McCormack, E; Geological Survey of Canada, Open File 8295, 2017 p. 94, Open Access logo Open Access
LinksGeoHab 2017
PublisherNatural Resources Canada
Meeting2017 GeoHab: Marine Geological and Biological Habitat Mapping; Dartmouth, NS; CA; May 1-4, 2017
Documentopen file
Mediaon-line; digital
RelatedThis publication is contained in Program and abstracts: 2017 GeoHab Conference, Dartmouth, Nova Scotia, Canada
File formatpdf
Subjectsmarine geology; surficial geology/geomorphology; environmental geology; geophysics; mapping techniques; oceanography; marine environments; nearshore environment; coastal studies; conservation; marine organisms; marine ecology; resource management; biological communities; environmental studies; ecosystems; geophysical surveys; acoustic surveys, marine; sonar surveys; side-scan sonar; bathymetry; turbidity; storms; Biology
ProgramOffshore Geoscience
Released2017 09 26
AbstractDeep drafted survey vessels, autonomous underwater vehicles, and expensive aerial LiDAR surveys have limitations when conducting bathymetric surveys in the nearshore, shallow, turbid conditions. These limitations are overcome with lightweight, shallow drafted autonomous surface vehicles (ASVs).
Here, an autonomous kayak is tested as a practical, nearshore bathymetric survey platform, particularly in response to storm events. The accuracy and functionality of the autopilot aboard the kayak was evaluated, and the preliminary results show the on-track variability to be within 10% of the error of the autopilot's GPS. The autonomy of the system allows for repeatable and comparable data sets over the same area.
A storm in January 2017 allowed for a storm response survey in which the kayak was deployed three days before and six days after a storm event occurred at Broadkill Beach, Sussex County, DE. These surveys further proved the viability of such a platform for not only nearshore coastal surveys but storm response bathymetric surveys as well.
The quality of bathymetric and side-scan data recorded by two different single beam echo sounder/side-scan units have also been compared and evaluated, allowing for a cost-benefit analysis of the platform's payload. The preliminary budget for the kayak platform, including a single beam echo sounder/side-scan unit is relatively inexpensive at $3000. Based upon the early results of accuracy, cost, and modularity of this system, it is a viable platform for nearshore bathymetric surveying.
Summary(Plain Language Summary, not published)
The sixteenth annual GeoHab Conference was held this year (2017) at the Waterfront Campus of the Nova Scotia Community College in Dartmouth, Nova Scotia, Canada.

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