This record describes multibeam echosounder data collected on RV Investigator voyage IN2016_T01, 'Continuity of Australian terranes into Zealandia: towards a geological map of the east Gondwana margin' which departed Lautoka on the 30th June 2016 and returned to Hobart on the 14th July 2016.
The Kongsberg EM710 MKII multibeam echosounder was used to acquire seafloor bathymetry and backscatter information around Lord Howe Rise and North Loyalty Basin and between Lautoka and Hobart.
The EM710 MKII provides a 0.5° by 1° transmit and receives angular resolution respectively. The echosounder's nominal frequency range is from 40 to 100 kHz.
Data are stored in .all raw format for bathymetry and backscatter and .wcd format for watercolumn backscatter, at CSIRO. There are 68 files totalling 3.5 GB of raw data in this dataset.
Sound velocity profiles were applied to this data during data acquisition. Bathymetry data contained in .all format are corrected for motion and position.
Tide corrections were not applied to the processed data. Processed data has had outliers removed. Processed line data is available in .gsf and ascii formats, and processed bathymetry and backscatter grids in geotiff format.
Additional information regarding this dataset including further information on processing streams is contained in the GSM data acquisition and processing report. Additional data products may be available on request.