EX1202L1-MB-DeSotoCanyon-WSG84-20m.kmz
eng; USA
utf8
gov.noaa.ngdc.mgg.multibeam:EX1202L1_Multibeam
dataset
multibeam survey 20m resolution dataset-level metadata
2012-05-01
ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
ISO 19115-2:2009(E)
Processed and gridded multibeam data in Google Earth KMZ format collected on NOAA Ship Okeanos Explorer during EX1202L1: Gulf of Mexico Exploration between 20120227 and 20120314
2012
publication
ex1202L1-MB-DeSotoCanyon-WSG84-20m.kmz
KMZ file with Kongsberg EM302 multibeam survey results from the NOAA Ship Okeanos Explorer during EX1202L1
completed
notPlanned
Pascagoula
Tampa
Galveston
North Atlantic
Gulf of Mexico
Mississippi Canyon
Green Canyon
Desoto Canyon
West Florida Shelf
Deepwater Horizon Site
Flower Garden Banks
place
None
OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY
OCEANS > OCEAN ACOUSTICS > ACOUSTIC SCATTERING
MBES > Multibeam Mapping System
CTD > Conductivity, Temperature, Depth
XBT > Expedable Bathythermograph
ECHO SOUNDERS
theme
multibeam
theme
None
otherRestrictions
otherRestrictions
Access Constraints: No access constraints. Use Constraints: Data shall not be used for navigation. Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
EX1202L1 :Gulf of Mexico Exploration on NOAA Ship Okeanos Explorer between 20120227 and 20120314
2012-04-30
creation
http://www.ncddc.noaa.gov/oer-waf/ISO/Resolved/2012/EX1202L1_COLLECTION_RESOLVED.xml
largerWorkCitation
collection
Multibeam Collection for EX1202L1: Gulf of Mexico Exploration
2012-03-14
http://www.ncddc.noaa.gov/oer-waf/ISO/Resolved/2012/EX1202L1_Multibeam_COLLECTION_RESOLVED.xml
EX1202L1_Multibeam
largerWorkCitation
sensor
eng; USA
oceans
geoscientificInformation
-77.71
-85.72
24.05
32.75
2012-02-27
2012-03-14
kmz
not applicable
http://service.ncddc.noaa.gov/rdn/oer-waf/media/ex1202L1-MB-DeSotoCanyon-WSG84-20m.kmz
download
The full-resolution multibeam data (Level 0 data) were used to create a BASE surface in CARIS HIPS 6.1, which was then exported to ASCII XYZ text file. That ASCII XYZ file was used to generate a shaded relief DTM (SD file) in IVS Fledermaus which was then used to create Geotiff files, ArcView Grids, and Google Earth KMZ files. The data are believed to be complete in accordance with the ship's multibeam data acquisition and processing logs.
These files were tested by opening in Google Earth 6 to ensure that geospatial content of the files is not corrupted and is consistent with the Level 0 data.
The bathymetry data were generated using a Kongsberg EM302 multibeam system, and recorded using Kongsberg's Seafloor Information System (SIS) software as *.all files. Collocated to the bathymetric data, bottom backscatter data were collected stored within *.all files, both as beam averaged backscatter values, and as full time series values within each beam. Realtime corrections to the data include: Continuous application of surface sound speed obtained with a hull-mounted SBE 45 thermosalinograph, Application of sound speed profiles obtained with Sippican Deep Blue Expendable Bathythermographs (XBTs) and / or Seabird CTD 9/11, Application of roll, pitch, and heave motion corrections obtained with POS M/V V.4 motion sensor unit.
Each raw multibeam file was imported into CARIS HIPS and SIPS 6.1. Each file was individually cleaned of errant navigation and depth values using CARIS's Swath Editor. The files were then added to a cumulative Base Surface within CARIS, and further cleaned of errant depth values using CARIS's Subset Editor. Motion corrector values from POS M/V V. 4 applied in real-time were verified in CARIS's Attitude and Navigation editors. No tidal corrections were applied.
The ASCII XYZ file was then imported into IVS 3D Fledermaus v.7 to build an *.sd file. The *.sd file retains the resolution of the source gridded ASCII XYZ data. The *.sd file format was selected for its ability to be viewed using the iView4D freeware distributed by IVS3D (www.ivs3d.com).
A GoogleEarth KML file was exported from Fledermaus v.7 in geotiff format. The KML file was then opened in GoogleEarth and resaved as a KMZ file, in order to be compatible with both Windows and Mac operating environments.
processor
none
This metadata was automatically generated from the Content Standard for Digital Geospatial Metadata: Extensions for Remote Sensing Metadatastandard version FGDC-STD-012-2002 using the Nov 2011 version of the FGDC CSDGM to ISO 19115-2 transform.