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Marine Planning Regions (Australia) | Macquarie
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This record describes sub bottom profiler data collected on RV Tangaroa voyage TAN2021_V01 (NIWA TAN2113), which was carried out on a contract to the CSIRO MNF from 9th November to 4th December 2021. The voyage had two objectives, which were to recover 27 Ocean Bottom Seismometers which had been deployed around Macquarie Island on IN2020_v06, and complete multibeam and sub bottom profiler mapping along the crest of the Macquarie Ridge and collect new multibeam data during transits. The Kongsberg Maritime TOPAS PS 18 Parametric Sub-bottom Profiler was used to acoustically image the strata and structure in the seafloors's shallow sub-surface. Sediment penetration can achieve 120-150 m in ideal conditions. Sub bottom profilers in general do not perform well with hard rocky substrates, water depths less than 150 m, steep and irregular terrain. The working area was subject to these limitations which made SBP data acquisition challenging and affected the resultant data. The data recorded in water depth greater than 4000 m at transit speeds when synced with multibeam acquisition was of little use as the time between pings was too long to maintain bottom lock. The transmitted waveform used was a linear frequency-modulated chirp (LFM) which was externally triggered with K-Sync to avoid interference with the EM302 and EM2040 multibeams. The frequency range of the chirp was from 2.0 to 6.0 kHz, with a chirp length of 20 or 15 ms or 50 ms for deep water. Transmitter output level was set to 0 dB and gain set to 0 dB and the high-pass filter was set to 1.0 kHz. The sub bottom profiler beam is stabilised for heave, roll and pitch via motion data fed from the PosMV. Beam steering was set to automatic. Raw data files were written in WGS 84 and SEG-Y files were written with UTM57S projection in the survey area and NZTM projection on transit. Data are stored in *.raw (123 files 3.82 GB) raw and *.seg (156 files 3.78 GB) segy formats at CSIRO. Additional information regarding this dataset is contained in the "NIWA Voyage Report 2022007WN.pdf". The report is available from Geophysical Survey and Mapping (GSM) group at CSIRO upon request.
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CAAB - Codes for Australian Aquatic Biota - is an 8-digit coding system for fishes and other aquatic organisms in the Australian region maintained originally by CSIRO Division of Marine Research and now CSIRO NCMI. CAAB can be used to obtain a taxon code for any species or species group on the CAAB list for use in data storage, or to obtain the current scientific name or other information for any CAAB taxon code. For groups where coverage of the Australian fauna is complete, it can also be used to generate lists of currently recognised Australian marine taxa in any genus, family or selected higher-level category. Taxon codes are useful for data storage where it is desirable to maintain the collected data (e.g. catch or survey data) independently from the associated name information (which is subject to revision or correction with changes in taxonomic knowledge). CAAB codes are also "meaningful" and convey information about the organism's classification down to the level of family, and so can be used for rapid sorting and filtering if desired. CAAB currently contains over 4,500 codes for fishes, 250+ codes for other marine vertebrates (reptiles, seabirds, and marine mammals), over 5,000 codes for marine invertebrates (including sponges, stony corals, echinoderms, commercially important crustaceans and molluscs, tunicates, and other taxa), and codes for Australian seagrasses and mangroves and a representative selection of Australian seaweeds and microalgae. While concentrating on the fauna and flora of the Australian Fishing Zone (AFZ) surrounding mainland Australia, some taxa from the broader Australasian region are also included, as well as species imported from other countries for sale domestically. CAAB also incorporates on-line links to further sources of taxonomic information such as the Australian Faunal Directory, the international directories FishBase, AlgaeBase, the US ITIS (Integrated Taxonomic Information System) database and the World Register of Marine Species (WoRMS). Links to WoRMS are particularly useful as any public occurrence data published to the Ocean Biodiversity Information System requires a WoRMS identifier The Fisheries Research and Development Corporation (FRDC) maintains the Australian Fish Names Standard (AS 5300) and Australian Standard for Aquatic Plant Names (AS 5301) vernacular name standards. Selected images are available per taxa. In particular the application Fishmap (https://www.marine.csiro.au/data/caab/fishmap.cfm) contains search tools for images and maps of the modelled species distribution of fish species. It is an updated version of the original Fishmap hosted by Atlas of Living Australia as it is current and contains regions in the Antarctic and Australia's offshore islands of Macquarie, Lord Howe, Heard and McDonald, Norfolk, Christmas and Cocos Keeling.