PANGAEA_993661 Multibeam bathymetry processed data (Kongsberg EM 122 & Kongsberg EM 710 working area dataset) of RV SONNE during cruise SO309 Bazhenova, Evgenia A; Davidson, Sam; Bach, Alissa; Asakura, Yukari; Hebbeln, Dierk; Freiwald, André Multibeam bathymetry processed data (Kongsberg EM 122 & Kongsberg EM 710 working area dataset) of RV SONNE during cruise SO309 2026-04-30 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.993661 Investigator Evgenia A Bazhenova evgeniabazhenova@gmail.com Earth Science Binary Object Binary Object (Media Type) Binary Object (File Size) Raster cell size File content Vertical datum Horizontal datum Horizontal datum, projection stored in file Longitude, westbound Longitude, eastbound Latitude, southbound Latitude, northbound Elevation, minimum Elevation, maximum geoscientificInformation Bathymetry EM710 multibeam echosounder KONGSBERG EM122 Multibeam Echosounder New Zealand Pacific Ocean SO309 SO309_0_Underway-6 SO309_0_Underway-7 Extracted from file Sonne_2 2025-01-16 2025-02-14 Complete -44.598 -42.251 167.596 179.775 Seabed2030 The Nippon Foundation - GEBCO Seabed 2030 Project access rights needed CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 60 data points text/tab-separated-values Freiwald, André; Beuck, Lydia; Bach, Alissa; Bazhenova, Evgenia A; Beaumont, Jennifer; Bostock, Helen C; Brix, Saskia; Davidson, Sam; Dehning, Klaus; Eyrich, Hanna; Hebbeln, Dierk; Hoffman, Leon; Holland, Lyndsey; Jeskulke, Karen; Kniest, Jorit; Knorrn, Alexander H; Korfhage, Severin; Leymann, Tom; Linnemann, Ulf; Lörz, Anne-Nina; Marriott, Peter; McDonald, Laura; Meyer-Schack, Birgit; Nowald, Nicolas; Okuma, Emmanuel; Pfennings, Kai; Ruhland, Götz; Schillai, Sophia; Schnabel, Kareen E; Seeliger, Julian; Suter, Patrick; Titschack, Jürgen; Vittori, Vincent; Walton, Kerry; Wienberg, Claudia; Wilsenack, Maik (2025): Cold-water Coral Biology & Geology off Aotearoa New Zealand, Cruise No. SO309, January 16 - February 15, 2025, Wellington (New Zealand) - Wellington (New Zealand). SONNE-Berichte, Begutachtungspanel Forschungsschiffe, SO309, 130 pp, https://doi.org/10.48433/cr_so309 Bazhenova, Evgenia A; Davidson, Sam; Bach, Alissa; Hebbeln, Dierk; Freiwald, André (2025): Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO309 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982657 Bazhenova, Evgenia A; Davidson, Sam; Bach, Alissa; Hebbeln, Dierk; Freiwald, André (2025): Multibeam bathymetry raw data (Kongsberg EM710 entire dataset) of RV SONNE during cruise SO309 [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.982656 Caress, David W; Schwehr, Kurt; O'Reilly, Tom; Porras Falconio, Nicolas; Rueda, Carlos A; Carreras, Joaquim; Berkowitz, Zac; dos Santos Ferreira, Christian; Donahue, Julian; McCann, Mike; Paduan, Jennifer B; Rose, Dan; Benavides, Jesse; Perry, Matthew (2024): dwcaress/MB-System: [software]. Zenodo, https://doi.org/10.5281/zenodo.6302801

MBES bathymetry data were collected using the ship's own Kongsberg EM 710 and EM 122 multibeam echosounders during the RV SONNE cruise SO309 CoralNewZ (Cold-water Coral Biology & Geology off Aotearoa New Zealand). The primary goal of the cruise was to search for cold-water coral communities and mounds in the EEZ of New Zealand. Hydroacoustic team included Sam Davidson (NIWA), who was funded by the NIWA internal project OCN2503 – NIWA Strategic Voyage Fund. This dataset includes 5 bathymetric grids produced based on the MBES data collected in the EEZ of New Zealand between 2025-01-16 and 2025-02-15. The grids represent 4 working areas: 1) east of Stewart Island; 2) the Graveyard Seamounts (Chatham Rise); 3) central Chatham Rise; 4) Reserve Bank (Chatham Rise); and 5) transits between working areas. Postprocessing of raw .all files was performed by the shipboard hydroacoustic team (Evgenia Bazhenova, Sam Davidson and Alissa Bach) using the QPS Qimera software. Data quality control included 1) verification that the SVP data were applied correctly based on the time and location; 2) blocking outer beams and in-turn data to ensure the best possible quality of the overlapping swaths, 3) manual point cloud cleaning if required. All the grids were additionally cleaned by Yukari Asakura using the MB-System software http://www.mbari.org/products/research-software/mb-system/. Transit data partially have degraded quality due to the bad weather conditions. Depths measured by the MBES are reported in respect to the mean-sea level. Tidal corrections were applied during the data postprocessing, using the predicted tides retrieved from the NIWA tidal model for the working areas (NIWA Tidal Model for New Zealand's EEZ, tides.niwa.co.nz). ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.993661"! ** These data should not be used for navigational purposes.

http://vocab.nerc.ac.uk/collection/V12/current/L11/ Vertical datum https://desktop.arcgis.com/en/arcmap/10.3/manage-data/raster-and-images/cell-size-of-raster-data.htm Raster cell size https://doi.org/10.48433/cr_so309 Cold-water Coral Biology & Geology off Aotearoa New Zealand, Cruise No. SO309, January 16 - February 15, 2025, Wellington (New Zealand) - Wellington (New Zealand) https://doi.org/10.5281/zenodo.6302801 dwcaress/MB-System: https://doi.pangaea.de/10.1594/PANGAEA.982656 Multibeam bathymetry raw data (Kongsberg EM710 entire dataset) of RV SONNE during cruise SO309 https://doi.pangaea.de/10.1594/PANGAEA.982657 Multibeam bathymetry raw data (Kongsberg EM 122 entire dataset) of RV SONNE during cruise SO309 https://gisgeography.com/horizontal-datum/ Horizontal datum https://gisgeography.com/horizontal-datum/ Horizontal datum, projection stored in file https://seabed2030.org/ Seabed2030 https://uol.de/icbm/forschungsplattformen-schiffe/sonne Sonne_2 DIF 9.4 2026-04-30 2026-07-24