IN2025_E01: Hydrology from RV Investigator Sea Trials

Hydrology data from the RV Investigator voyage IN2025_E01, collected between February 19 and March 1, 2025, during sea trials and calibrations. The dataset contains quality-controlled measurements of salinity, dissolved oxygen, phosphate, silicate, nitrate plus nitrite, and ammonium from water samples taken at various depths using Niskin bottles on CTD deployments. It is archived by CSIRO's National Collections and Marine Infrastructure Information and Data Centre in Hobart.

Use Cases

• Calibrating shipboard Conductivity-Temperature-Depth (CTD) sensors based on discrete water sample analyses.
• Profiling nutrient concentrations (phosphate, silicate, nitrate, ammonium) to study marine biogeochemical cycles.
• Assessing dissolved oxygen levels and salinity for water mass characterization and oceanographic studies.
• Validating regional oceanographic models with in-situ, quality-controlled hydrographic data.

Strengths

• Data is explicitly described as processed and quality-controlled.
• Covers a specific, recent 11-day voyage (Feb 19 - Mar 1, 2025) providing temporal specificity.
• Includes multiple key chemical parameters (salinity, dissolved oxygen, and four nutrients) for a holistic water profile.

Limitations

• Column names, row counts, file size, license, and author information are not provided in the available metadata.
• The dataset's availability and access methods are unclear from the provided descriptions.
• Spatial coverage is implied (departing/returning to Hobart) but specific sampling locations and station counts are not detailed.

Provenance

Source

CSIRO Marlin Data Catalogue, collected via the Marine National Facility (MNF) RV Investigator.

Collection Method

Samples collected from Niskin bottles at various depths during Conductivity-Temperature-Depth (CTD) deployments.

Time Range

February 19, 2025 to March 01, 2025 (AEST).

Freshness

Last updated on 2026-05-02 according to the most recent platform entry.

Geography

Voyage departed from and returned to Hobart, Tasmania; specific sampling locations not provided.