Seafloor classification of the bathymetry dataset from the Queen Charlotte Sound / Tōtaranui and Tory Channel / Kura Te Au
Hydrographic Survey LINZ Project HYD-2016/17-01 (HS51).
Classification of the multibeam data based on the backscatter intensity as a proxy for substrate type. Classification was
done using the ArcMap Image Classification tool using four classes. Training areas where picked to identify areas from
high to low backscatter.
These data are in raster geotiff format and include ESRI layer files and QGIS GML files for symbology.
The National Institute of Water and Atmospheric Research Ltd (NIWA) was contracted in October 2016 by Land Information New
Zealand (LINZ) to undertake hydrographic surveying services for the Queen Charlotte Sound / Tōtaranui and Tory Channel /
Kura Te Au Hydrographic Survey (HS51). This work was commissioned by a partnership between LINZ and the Marlborough District
The commissioned survey comprises both hydrographic (LINZ) and habitat mapping (MDC), requirements which are met by a NIWA-led
partnership with Discovery Marine Limited (DML) under LINZ project HYD-2016/17-01 (HS51) Contract No 20058.
Neil H.L., Mackay K., Wilcox S., Kane T., Lamarche G., Wallen B., Orpin A., Steinmetz T., Pallentin A. 2018. What lies
beneath? Guide to Survey Results and Graphical Portfolio, Queen Charlotte Sound/Tōtaranui and Tory Channel/Kura Te Au (HS51)
Survey. NIWA Client Report 2018085WN.
Queen Charlotte Sound / Tōtaranui
and Tory Channel / Kura Te Au in the Marlborough Sounds, New Zealand