NIWA - Metadata Catalogue
Keyword
multibeam bathymetry swath seafloor marine geophysics
34 record(s)
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R/V Tangaroa
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Multibeam data from the "Cook Strait Swath II" voyage (TAN0215) of the R/V Tangaroa. The voyage was the second dedicated and the fourth in total in an series used to build up an accurate map of the seabed morpholoy of the Cook Strait region. This voyage was concentrated in the southern Cook Strait region from Campbell Bank, over Nicholson Bank nd across to the Palliser shelf. Survey Leader: John Mitchell Organisations: NIWA Bathymetric Instrument: Simrad EM300 30kHz Multibeam Navigation Instrument: DGPS Ports: Wellington to Wellington
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R/V Tangaroa
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SMB Elaine
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Multibeam data from the "Poverty Re-entrant" voyage (TAN0106) of the R/V Tangaroa. The voyage investigated the origin of the Poverty Re-entrant - a large margin re-entrant oalong the continental shelf off Povert Bay. It has been suggested that the Poverty Re-entrant was formed by the oblique impact of a large seamount and by massive and catastrophic avalanching of marhin rocks shattered by passage of the seamount through the margin but the original structure might be masked by later deposition, compressio, accretion of avalanche deposits, and erosion by canyons. Its structure may be further complicated by relatively recent seamount impacts. Survey Leader: Keith Lewis Organisations: NIWA Bathymetric Instrument: Simrad EM300 30kHz Multibeam Navigation Instrument: DGPS Ports: Wellington to Tauranga
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Biophysical Moorings 1 survey undertaken by the R/V Tangaroa
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OS2020 R/V Tangaroa
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This voyage on the R/V Tangaroa was one of an ongoing series being used to build up an accurate map of the seabed morphology of the Cook Strait region, using the Simrad EM300 multibeam swath sounder The 100m contour was chosen as the nominal cutoff for data collection, with depths shallower than that giving too narrow a coverage.
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OS2020 R/V Tangaroa
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Multibeam data from the "OS2020 New Zealand American Sentry mineralization Survey (NZASMS 2011)" voyage by the R/V Tangaroa. The primary mission of this voyage is to "Characterize the seafloor hydrothermal systems of select volcanoes along the Kermadec arc for their mineralization potential using the AUV Sentry" In addtion, other aspects that are covered include: regional geophysical signatures of the volcanoes and their hydrothermal systems, plume studies, habitiat research of vent-related animals, and collections of representative animals, rocks and minerals. Survey Leader: Cornel de Ronde Organisations: GNS,NIWA Bathymetric Instrument: Kongsberg EM302 multibeam Navigation Instrument: Seastar 9200 DGPS Ports: Auckland to Auckland