EM300 Multibeam Sonar Data collected from January 26 to April 22 from NOAA Ship Hi'ialakai cruise HA-15-01 to the Pacific Remote Island Areas and American Samoa in 2015

Description

Multibeam data were collected using a Simrad EM300 30-kHz sonar aboard NOAA Ship Hi'ialakai, a 68-m (218') NOAA research vessel, from January 26 to April 22, 2015 during cruise HA-15-01. Multibeam data were acquired at Johnston, Howland, Baker, Jarvis, and Palmyra in the Pacific Remote Island Areas, and Swains and Tutuila in American Samoa. The multibeam data were collected using Kongsberg SIS software in the *.all format and processed using SABER and QPS Qimera editing software. Surface sound velocity values were supplied by Seabird SBE-45 MicroTSG and a SBE-38, and motion corrections from a TSS/Applanix POS MV (Model 320 Version 4) vertical reference were applied to the data in real time. WGS84 datum. The vessel is equipped with a sound velocity profiler; however, no casts were acquired during mapping operations. Attempts were made to improve vertical fit of the EM300 data by using sound velocity profile data from other sources (data from previous cruises, and synthetic data derived from World Ocean Atlas using velocipy); however, these alternatives were not effective. Resulting vertical discrepancies with pre-existing surfaces are ±10m; however, the EM300 data cover deep depths (up to 4800m) and therefore these errors were considered acceptable. The EM300 data only covered new terrain around Howland and Baker islands, and therefore only the data for these areas have been processed. Depths mapped range from ~50 m to 4800 m. These data are not to be used for navigation.

Resources

Name Format Description Link
0 The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. https://www.earthdata.nasa.gov/learn/find-data/idn/gcmd-keywords
21 Multibeam bathymetry grid for Baker Island, acquired during NOAA Ship Hi'ialakai cruise HA-15-01. *Data are currently in the process of being archived and will be accessible via NCEI's Bathymetry portal once complete. https://www.ngdc.noaa.gov/ships/hi_ialakai/HA1501_mb.html
21 Version2 data are the processed multibeam files (*.gsf) acquired during cruise HA-15-01 aboard the Hi'ialakai for Howland and Baker islands in the Pacific Remote Island Areas. *Data are currently in the process of being archived and will be accessible via NCEI's Bathymetry portal once complete. https://www.ngdc.noaa.gov/ships/hi_ialakai/HA1501_mb.html
0 Pacific Island Fisheries Science Center homepage https://www.pifsc.noaa.gov
21 NCEI is the U.S. national archive for multibeam bathymetric data. Data access includes, 1) Bathymetric Data Viewer (geographic and text search), 2) Multibeam Survey Search (text search), and 3) Custom Maps using AutoGrid tool. https://www.ngdc.noaa.gov/mgg/bathymetry/multibeam.html
0 Online Resource https://www.pifsc.noaa.gov/cred/
33 NOAA Data Management Plan for this record on InPort. https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/pifsc/dmp/pdf/47822.pdf
21 Version1 data are the raw (as collected) multibeam files (*.all) acquired during cruise HA-15-01 aboard the Hi'ialakai from Jan 26 to April 22 2015 around Johnston, Howland, Baker, Jarvis, and Palmyra in the Pacific Remote Island Areas, and Swains and Tutuila in American Samoa. *Data are currently in the process of being archived and will be accessible via NCEI's Bathymetry portal once complete. https://www.ngdc.noaa.gov/ships/hi_ialakai/HA1501_mb.html
0 View the complete metadata record on InPort for more information about this dataset. https://www.fisheries.noaa.gov/inport/item/47822
21 Multibeam bathymetry grid for Howland Island, acquired during NOAA Ship Hi'ialakai cruise HA-15-01. *Data are currently in the process of being archived and will be accessible via NCEI's Bathymetry portal once complete. https://www.ngdc.noaa.gov/ships/hi_ialakai/HA1501_mb.html
21 The report describes processing of multibeam echosounder (MBES) bathymetry data acquired aboard the Hi'ialakai during NOAA RAMP cruises between 2015 and 2017. Report also discusses data quality and coverage issues that impacted which data were archived to the NOAA National Centers for Environmental Information (NCEI) and used to update bathymetric products produced by the NOAA Ecosystem Sciences Division, and available on the Pacific Islands Benthic Habitat Mapping Center website (https://www.soest.hawaii.edu/pibhmc/cms/). "Multibeam bathymetry data from 2015-2017 RAMP cruises (ASRAMP; HARAMP; MARAMP)" *Data and reports are currently in the process of being archived and will be accessible via NCEI's Bathymetry portal once complete. https://www.ngdc.noaa.gov/ships/hi_ialakai/HA1501_mb.html
0 Online Resource https://www.soest.hawaii.edu/pibhmc

Tags

  • crep
  • cruise metadata catalog for multibeam mapping missions
  • doc/noaa/nmfs/pifsc
  • united states of america
  • american samoa (14s170w0000)
  • pibhmc
  • pacific remote islands marine national monument
  • reef monitoring and assessment
  • johnston atoll (16n169w0001)
  • aquatic habitat
  • corals
  • benthic habitat
  • coral reef ecosystem division
  • baker island
  • pifsc
  • equatorial pacific ocean
  • jarvis island (00s160w0001)
  • biosphere
  • pacific remote island areas
  • palmyra atoll (05n162w0001)
  • tutuila island (14s170w0016)
  • bathymetry
  • oceans
  • american samoa
  • noaa
  • nmfs
  • baker island (00n176w0001)
  • swains atoll (11s171w0001)
  • us doc
  • howland island
  • pacific islands fisheries science center
  • u.s. department of commerce
  • earth science
  • line islands
  • national marine fisheries service
  • seafloor elevation
  • bathymetry/seafloor topography
  • pacific islands benthic habitat mapping center
  • pria
  • multibeam sonar
  • cred
  • howland island (00s176w0001)
  • sea floor
  • central pacific ocean
  • usa minor outlying islands
  • reef habitat
  • ocean basin
  • ecosystem sciences division
  • esd
  • coastal processes
  • johnston atoll
  • hi'ialakai
  • geophysical
  • zoology
  • coral reefs
  • mapping
  • pacific ocean
  • geographic information
  • country/territory
  • south pacific ocean
  • coral reef ecosystem program

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