RV Investigator Voyage IN2025_V05 ADCP Data
This record describes the Acoustic Doppler Current Profiler (ADCP) data collected from the Marine National Facility RV Investigator voyage IN2025_V05, titled: "Eruption, destruction, and seafloor ecosystem recovery – Tonga's 2022 eruption of the century." The voyage took place between August 10, 2025 and October 01, 2025 (AEST), departing from Hobart and returning to Brisbane.
The ADCP was run for most of the voyage, though it was turned off when EM712 and EM2040 Mk2 surveys were being performed to avoid creating interference in the multibeam data.
ADCP data were collected using the University of Hawaii Data Acquisition System (UHDAS) and post-processed using the Common Ocean Data Access System (CODAS). Documentation for these systems can be found in (Hummon, 2009-2021).
The RDI Ocean Surveyor 150kHz ADCP, RDI Ocean Surveyor 75kHz ADCP and RDI Ocean Surveyor 38kHz ADCP were run in narrowband mode.
External triggering was used.
The drop keel was set at 2 m below the hull for the duration of the voyage. The nominal transducer depth is set to 6 metres; any additional changes will need to be applied by the user if they believe it is required.
Bottom tracking was run for the first hour of the voyage on the OS150nb to aid in calibrations.
The following processing issues were encountered for this dataset
On this voyage, it was discovered the OS75 would report signal below the bottom, which is suspected to be electrical interference. This data set was split into two cruises to accommodate for changes in positioning systems during acquisition and subsequently reprocessed using the Seapath.
For more information please see the Processing Report (linked below).
This dataset was processed (quality-controlled), and then archived by the CSIRO National Collections and Marine Infrastructure (NCMI) Information and Data Centre (IDC).
Simple
Identification info
- Alternate title
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IN2025_V05 ADCP
- Date
- Credit
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ADCP data processed by MNF Data Acquisition and Processing personnel.
- Credit
-
These data were collected on the Marine National Facility (MNF) RV Investigator voyage IN2025_V05
- Credit
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The MNF must be acknowledged in all outputs derived from Data and/or Samples collected by, or with support from, the MNF. Acknowledge the MNF in outputs with the statement:
“We acknowledge the use of the CSIRO Marine National Facility ( https://ror.org/01mae9353 ) in undertaking this research.”
Acknowledgment and citations should be in all forms of publication including presentations (where the acknowledgement should be on the closing slide), journals, books, reports and related research outputs.
- Status
- Completed
- Point of contact
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Role Organisation Electronic mail address Custodian CSIRO NCMI - Hobart
- Topic category
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- Oceans
Extent
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Temporal extent
- Time position
- 2025-08-10
- Time position
- 2025-10-01
- Maintenance and update frequency
- As needed
Resource constraints
- Title
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Attribution 4.0
- Access constraints
- Use constraints
- Other constraints
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Data are made available under a Creative Commons Attribution 4.0 International Licence, please see link. Data are supplied 'as is' without any warranty or guarantee except as required by law to be given to you. The data may not be free of error, comprehensive, current or appropriate for your particular purpose. You accept all risk and responsibility for their use. ATTRIBUTION STATEMENT: We acknowledge the use of the CSIRO Marine National Facility ( https://ror.org/01mae9353) in undertaking this research. The dataset [Insert-dataset-name-here] downloaded on [Insert-DD-Mmm-YYYY-here] was collected on voyage [Insert-voyage-name-here] by the Marine National Facility.
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distribution format
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PDF
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NetCDF
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PNG
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- OnLine resource
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5 minute ADCP os75nb Data (NC)
Download the 5 minute ADCP os75nb Data (NetCDF format)
- OnLine resource
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Processing Report (PDF)
Download the Processing Report (PDF format)
- OnLine resource
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Data Trawler
Link to Data available for this voyage via the Data Trawler
- OnLine resource
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OS75nb Plots
Download overview plots of collected OS75nb ADCP data
- OnLine resource
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OS150nb Plots
Download overview plots of collected OS150nb ADCP data
- OnLine resource
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5 minute ADCP os150nb Data (NC)
Download the 5 minute ADCP os150nb Data (NetCDF format)
- OnLine resource
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5 minute ADCP OS38nb Data (NC)
Download the 5 minute ADCP OS38nb Data (NetCDF format)
- OnLine resource
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OS38nb Plots
Download overview plots of collected OS38nb ADCP data
- OnLine resource
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Investigator Survey
Link to RV Investigator Survey Information, including voyage plans and summaries
- OnLine resource
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Marine National Facility
Link to the Marine National Facility Homepage
Data quality info
- Hierarchy level
- Dataset
Report
Result
- Explanation
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Refer to documentation
Result
- Explanation
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Completeness and quality report from ADCP Processing Report: There were instances during the voyage where the OS75 would report signal below the bottom which is suspected to be due to electrical interference. These were removed in two passes, first during single ping editing of the OS75 as shown below followed by editing with OS75 vs. OS38 comparison plots to identify areas in the OS75 data near the bottom that were affected by the interference.
Resource lineage
- Statement
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Original field data.
Data processing and quality control: Performed by the NCMI DAP Group. Note that 1min average data is provided as a special request, however it is unedited and has data quality implications. For general use, the 5min average data (os150nb.nc) should be used.
- Hierarchy level
- Dataset
Reference System Information
- Reference system identifier
- EPSG/WGS 84 (EPSG:4326)
Metadata
- Metadata identifier
- 08711f5d-482d-474e-b428-3d67f6c44dc8
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation Electronic mail address Point of contact CSIRO NCMI - Information and Data Centre
Type of resource
- Resource type
- Dataset
- Metadata linkage
-
http://marlin.csiro.au/geonetwork/srv/api/records/08711f5d-482d-474e-b428-3d67f6c44dc8
- Date info (Creation)
- 2026-07-31T03:00:16.94923Z
- Date info (Creation)
- 2026-04-07T21:45:11.693695Z
- Date info (Creation)
- 2026-02-17T02:49:42.55303Z
- Date info (Revision)
- 2026-07-31T03:23:04.743129Z
Metadata standard
- Title
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ISO 19115-3:2018
- Title
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Marine Community Profile
- Date (Creation)
- 2019-05-30
- Edition
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3.0
- Edition date
- 2019-05-30T00:00:00
- Cited responsible party
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Role Organisation Electronic mail address Custodian Marine Community Profile Governance Committee
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