Data

RV Investigator Voyage IN2025_V05 EK80 Echosounder

Australian Ocean Data Network
CSIRO (Associated with) CSIRO NCMI (Associated with) CSIRO O&A, Information & Data Centre (Point of contact) CSIRO Oceans & Atmosphere - Hobart (Associated with) Data Officer (CN), Hobart (Processor of)
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ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://marlin.csiro.au/geonetwork/srv/eng/catalog.search#/metadata/ff887cf9-18bb-464e-8bad-5dc6e0ad946b&rft.title=RV Investigator Voyage IN2025_V05 EK80 Echosounder&rft.identifier=71c8c723-b010-4e8f-be9a-38192c006471&rft.publisher=Australian Ocean Data Network&rft.description=This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2025_V05, 'Eruption, destruction and seafloor ecosystem recovery – Tonga 2022 eruption of the century', which departed Hobart on 10 Aug and ended in Brisbane on 01 Oct 2025 (local). The voyage’s first leg transited from Hobart to Nuku’alofa (10–19 Aug 2025), where science participants boarded. A mid-voyage transfer occurred on 05 Sep, and all science personnel disembarked in Nuku’alofa on 23 Sep before the final transit to Brisbane (23 Sep–1 Oct 2025).The Simrad EK80 split beam echosounders for 18, 38, 70 120 and 200 were used to acquire acoustic backscatter data to a range of 1500 m. All frequencies were logged mostly continuously for the extent of the voyage, with the exception of short periods of focused seabed mapping or other sampling operations. Data are stored in *.raw and *.idx format at CSIRO. There are 6540 files totalling 156 GB of raw data in this dataset.No processing has been conducted on this data.Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.Maintenance and Update Frequency: asNeededStatement: Original field data.&rft.creator=Anonymous&rft.date=2025&rft.coverage=westlimit=147.338; southlimit=-43.28; eastlimit=186.49; northlimit=-19.865; projection=WGS 84 (EPSG:4326)&rft.coverage=westlimit=147.338; southlimit=-43.28; eastlimit=186.49; northlimit=-19.865; projection=WGS 84 (EPSG:4326)&rft_rights=Attribution 4.0 https://creativecommons.org/licenses/by/4.0/&rft_rights=&rft_rights=Data is made available under a Creative Commons Attribution 4.0 International Licence, please see link. Data is 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 its use. ATTRIBUTION STATEMENT: “We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353 ) in undertaking this research.” The dataset IN2025_V05 EK80 Echosounder downloaded on [Insert-DD-Mmm-YYYY-here] was collected on voyage [Insert-voyage-name-here] by the Marine National Facility.&rft_subject=oceans&rft_subject=Ship: Investigator (RV)&rft_subject=Marine National Facility&rft_subject=Research Voyage: IN2025_V05&rft_subject=Earth Science | Oceans | Ocean Acoustics&rft_subject=Coastal Waters (Australia) | Tasmania Coast, TAS&rft_subject=Global / Oceans | South West Pacific Ocean&rft_subject=Regional Seas | Tasman Sea&rft_subject=Fisheries echosounder - EK80&rft_subject=Abundance of biota&rft_subject=Biovolume&rft_subject=research vessel&rft_subject=Fish-finder echosounders&rft.type=dataset&rft.language=English Access the data
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Attribution 4.0
https://creativecommons.org/licenses/by/4.0/

Data is made available under a Creative Commons Attribution 4.0 International Licence, please see link. Data is 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 its use. ATTRIBUTION STATEMENT: “We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353 ) in undertaking this research.” The dataset IN2025_V05 EK80 Echosounder downloaded on [Insert-DD-Mmm-YYYY-here] was collected on voyage [Insert-voyage-name-here] by the Marine National Facility.

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Full description

This record describes scientific split-beam echosounder data collected on the RV Investigator voyage IN2025_V05, 'Eruption, destruction and seafloor ecosystem recovery – Tonga 2022 eruption of the century', which departed Hobart on 10 Aug and ended in Brisbane on 01 Oct 2025 (local). The voyage’s first leg transited from Hobart to Nuku’alofa (10–19 Aug 2025), where science participants boarded. A mid-voyage transfer occurred on 05 Sep, and all science personnel disembarked in Nuku’alofa on 23 Sep before the final transit to Brisbane (23 Sep–1 Oct 2025).

The Simrad EK80 split beam echosounders for 18, 38, 70 120 and 200 were used to acquire acoustic backscatter data to a range of 1500 m. All frequencies were logged mostly continuously for the extent of the voyage, with the exception of short periods of focused seabed mapping or other sampling operations. Data are stored in *.raw and *.idx format at CSIRO. There are 6540 files totalling 156 GB of raw data in this dataset.

No processing has been conducted on this data.

Additional information regarding this dataset is contained in the GSM data acquisition and processing report. Additional data products may be available on request.

Lineage

Maintenance and Update Frequency: asNeeded
Statement: Original field data.

Notes

Credit
Data collected on the Marine National Facility (MNF) RV Investigator voyage IN2025_V05. 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.

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Spatial Coverage And Location

text: westlimit=147.338; southlimit=-43.28; eastlimit=186.49; northlimit=-19.865; projection=WGS 84 (EPSG:4326)

Subjects
Abundance of biota | Biovolume | Coastal Waters (Australia) | Tasmania Coast, TAS | Earth Science | Oceans | Ocean Acoustics | Fish-finder echosounders | Fisheries echosounder - EK80 | Global / Oceans | South West Pacific Ocean | Marine National Facility | Regional Seas | Tasman Sea | Research Voyage: IN2025_V05 | Ship: Investigator (RV) | oceans | research vessel |

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Other Information
Geophysical Survey and Mapping website information for this data set and link to downloading data. (Geophysical Survey and Mapping website information for this data set)

url : https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey=IN2025_V05&instrument=EK80

RV Investigator survey information

url : https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey=IN2025_V05

Marine National Facility home page (MNF home page)

url : https://mnf.csiro.au/

Link to the CSIRO Data Access Portal (Data Access Portal)

url : https://data.csiro.au/dap/

Link to visualisation tool for Near Real-Time Underway Data (NRUD) (Underway Visualisation Tool)

url : http://www.marine.csiro.au/data/underway/?survey=IN2025_V05

Identifiers
  • global : 71c8c723-b010-4e8f-be9a-38192c006471