NOAA > NESDIS > NCEI (formerly NGDC) > Marine Geology and Geophysics > Bathymetry & Relief privacy policy  All Bathy/Relief Coastal DEMs Fishing Global Lakes Multibeam NOS

Report for H12905 Locality: Gulf of Mexico Sublocality: 20 NM SSE of Marsh Island State(s) or Region(s): Louisiana Start Date: 2016-08-16 End Date: 2016-09-30 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Download times vary depending on file size and data transfer rates. Download All Products for H12905
Visit the full NCEI Bathymetry Viewer.

Survey Products

Descriptive Report and Metadata Documents

NOAA/NOS Descriptive Report & Survey Metadata
Products listed in the project descriptive report (DR) may not reflect final products available through NCEI.
H12905_DR.pdf	7.37MB	The document may be read using a free Adobe Reader.
H12905_DR.xml	75.4KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO Metadata Record
H12905 View / Download H12905.xml		Usually presented as an XML document, which captures the basic characteristics of HSMDB metadata verified from H10000 (1982) to the present as well as F00200 (1965) to the present.

Bathymetry

Survey products may use different units, datums or projections than the associated survey. Please consult product-specific metadata for additional details.
Bathymetric Attributed Grid (BAG) Data
The BAG format is a gridded, multi-dimensional bathymetric data file (see Open Navigation Surface). Readable with various applications such as the free CARIS Easy View, ESRI ArcGIS or open source GDAL. The BAGXYZ files are ascii representations of the BAG data in XYZ format, but do not include uncertainty.
H12905_MB_50cm_MLLW_4of4.bag	49.6KB
H12905_MB_50cm_MLLW_2of4.bag	54.9KB
H12905_MB_50cm_MLLW_3of4.bag	67.0KB
H12905_MB_1m_MLLW_1of4.bag	84.86MB
NOAA/NOS Sounding Data
Download data from the Point Store database via NEXT (NCEI Extract System). Point soundings are from the survey Smooth Sheet or of similar density. Depths in meters. Horizontal datum is (converted to) NAD83 if possible. Vertical datum is (converted to) Mean Lower Low Water if possible. Please check the associated metadata to confirm the correct datums. The data file format is : SurveyID, Long, Lat, Depth.
H12905		XYZ format.

Images

GeoImagePDF
H12905_GeoImage.pdf	41.57MB	NOAA/NOS Layered GeoSpatial Image PDF File. Created by NOS to include chart and survey layers in a georeferenced pdf format.
NOAA/NOS sidescan sonar mosaic in TIFF format
H12905_SSSAB_1m_600kHz_2of2.tif	6.24MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
H12905_SSSAB_1m_600kHz_1of2.tif	41.74MB	NOAA/NOS TIFF sidescan sonar mosaic survey image. The mosaic may be viewed with a standard image viewer.
NOAA/NOS multibeam acoustic backscatter mosaic in TIFF format
The multibeam acoustic backscatter mosaic is readable with various applications such as the free CARIS Easy View, or ESRI ArcGIS geospatial visualization software.
H12905_MBAB_2m_OceanExplorer_400kHz_1of1.tiff	3.99MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.

Bottom Samples and Tide Documents

Bottom Sample Data
NOAA/NOS bottom sample listing in IMLGS (pre-1989)
Link to H12905 in IMLGS (pre-1989 samples)		Search NOAA/NOS seabed samples submitted to IMLGS through NMNH (pre-1989). Modern survey bottom samples are not currently viewable on a map service.
NOAA/NOS bottom sample document in PDF or ASC format
H12905_BottomSamples.ascii	0.5KB	NOAA/NOS bottom sample document in PDF or ASC format.
NOAA/NOS Tide Note in PDF Format
H12905_tn.pdf	20.7KB	This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
H12905_tz.pdf	139.2KB	This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
H12905_ProjectSketch.jpg	128.1KB	Project sketch image with highlighted survey area.
Data Acquisition and Processing Report in PDF format
OPR-K354-KR-16_DAPR.pdf	4.94MB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Gulf of Mexico 20 NM SSE of Marsh Island Louisiana

Start Date End Date Approval Date 2016-08-16 2016-09-30 2017-01-23

Project Number Project Name Purpose OPR-K354-KR-16

Source of Original Data and License Information

License Information These data were produced under contract with NOAA and any potential copyright was assigned to NOAA. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). View the license deed. View the legal code.

Reference System Information

Vertical Datum Horizontal Datum Projection Scale Mean Lower Low Water North American Datum 1983 Projected UTM 15 40000

Affected Products

ENCs RNCs US4LA15M 11351 11349 11340

Survey Equipment

Vessel(s) Chief(s) of Party R/V Ocean Explorer George G. Reynolds

Manufacturer Model Instrument Type EdgeTech 4125 SSS Reson 7125 MBES

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Raw and Processed 343.83 2018-09-19 11:47:52.0 BACKSCATTER, SIDE SCAN, BATHYMETRY