This record describes sub bottom profiler data collected on RV Investigator voyage IN2019_V04, 'Hotspot dynamics in the Coral Sea: connections between the Australian plate and deep Earth' which departed Cairns on the 7th August 2019 and returned to Brisbane on the 3rd September 2019.
The Kongsberg SBP120 (sub bottom profiler) was used to acquire data, containing the specular reflections at different sediment interfaces below the seafloor, in the Coral Sea within the EEZ of Australia, Papua New Guinea, Solomon Islands and New Caledonia
The SBP120 provides a 3° by 3° angular resolution.
The echosounder's frequency sweep range is from 2.5 to 7 kHz. The SBP120 was logged continuously whilst underway during the voyage.
Data are stored in *.raw (859 files 19.3 GB) raw and *.seg (868 files 19.7 GB) segy formats at CSIRO. There are additional *.seg files due to line splitting that was required.
The segy format data had a real time processing stream applied, which applies gain, a gain correction, matched filter with replica shaping and time variable gain. Instantaneous amplitude was not applied in the processing stream.
Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request
Original field data.