This dataset includes raw multibeam echosounder data collected on-board R/V Helmer Hanssen during the CAGE 17-2 AMGG cruise to the Olga Basin, northern Barents Sea between June 21st to July 3rd, 2017. Data were collected using a Kongsberg Simrad EM302 multibeam echosounder system. The nominal sonar frequency of the sound waves is 30 kHz with an angular coverage sector of up to 150° and 432 beams per ping. The system was typically used with a 60°/60° opening angle.
The dataset comprises Kongsberg bathymetry files, as well as water column data files and sound velocity profiles gathered from 8 CTD casts. Water column data collection was not continuous during the cruise, for example during transits between study areas.
Data coverage includes the transit from Longyearbyen, Outer Storfjordrenna, the Olga Basin (Storbanken), and transit to Tromsø over West Sentralbanken, with files split according to their day of collection. A rough itinerary is as follows:
21: Isfjorden
22: West Svalbard – Storfjordrenna
23: Storfjordrenna
24: West Svalbard
25: Spitsbergenbanken – Hopendjupet
26-29: Olga Basin (Storbanken)
30: Storbankrenna
01: Sentralbanken
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