e84933f8-0e30-48c3-9d25-b02471d283a2 urn:uuid eng UTF-8 nonGeographicDataset nonGeographicDataset 2025-06-24T22:29:45 creation ISO 19115 2016 RV Investigator Voyage IN2023_V01 Magnetometer Data e84933f8-0e30-48c3-9d25-b02471d283a2 This record describes magnetometer data collected on RV Investigator voyage IN2023_V01, titled "Antarctic Bottom Water Production in the past: Records from marine sediments, Cape Darnley, East Antarctica". The voyage took place between 25th January, 2023 and 2nd March, 2023 departing from Henderson's (WA) and arriving in Hobart (TAS). The SeaSPY2 magnetometer uses an omnidirectional Overhauser sensor that requires no realignment or recalibration and has no heading error. The instrument has an absolute accuracy of 0.1 nT, sensor sensitivity of 0.01 nT and resolution of 0.001 nT. Data are stored in .CSV and .MMS data files at CSIRO. 15 final files for 150 MB were exported as .csv files in this dataset. No processing has been conducted on this data. A total of 3,909 track kilometre's of magnetometer data was collected. The magnetometer was towed ~300 m astern of the ship and a layback value of 361 was applied to the magnetometer data. This was the total distance behind the ship's positioning reference point. Additional information regarding this dataset is contained in the GSM data acquisition and processing report. {"type": "Polygon", "coordinates": [[[64.0244, -65.8926], [147.5122, -65.8926], [147.5122, -31.9416], [64.0244, -31.9416], [64.0244, -65.8926]]]} 64.0244 147.5122 -65.8926 -31.9416 RV Investigator survey information documentDigital RV Investigator survey information HTML MNF home page documentDigital Marine National Facility home page HTML Data Access Portal documentDigital Link to the CSIRO Data Access Portal HTML Underway Visualisation Tool documentDigital Link to visualisation tool for Near Real-Time Underway Data (NRUD) HTML Unnamed resource documentDigital License Graphic PNG