83 CTD deployments were conducted aboard the RV Investigator during a May 2024 voyage from Hobart to Sydney. Data from primary sensors were processed to 1-decibar binned averages, with conductivity calibration achieving a standard deviation of 0.0018351 PSU. The dataset was quality-controlled and archived by CSIRO's National Collections and Marine Infrastructure Information and Data Centre.
Use Cases
- Analyzing vertical profiles of conductivity, temperature, and depth (CTD) based on the 83 deployments.
- Studying dissolved oxygen concentrations based on the calibration fit with a SD of 0.83297 μM.
- Investigating chlorophyll-a and scattering levels based on auxiliary sensor data.
- Examining changes in marine ecosystems over time based on the voyage's focus on 25-year trends.
Strengths
- 83 separate CTD deployments provide multiple sampling points.
- Conductivity calibration achieved a standard deviation of 0.0018351 PSU, meeting a target of 'better than 0.002 PSU'.
- Data underwent automated QC to remove spikes and out-of-range values.
Limitations
- Column-level documentation is absent; field semantics must be inferred after download.
- CTD had minor issues at the beginning of the voyage, and LADCP had a battery failure for the first three casts.
- Row count is unknown, which may limit suitability assessment.
Provenance
- Source
- Australian Ocean Data Network
- Collection Method
- Data acquired using a Sea-Bird SBE911 CTD unit fitted with a rosette sampler.
- Time Range
- May 01, 2024 to May 31, 2024 (AEST)
- Freshness
- Last updated 2026-05-05 01:17:26.477275; freshness should be verified.
- Geography
- Voyage departed from Hobart and returned to Sydney, covering southeast Australian waters.