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 H12941 Locality: Gulf of Mexico Sublocality: 28 NM West of SW Pass State(s) or Region(s): Louisiana Start Date: 2016-08-03 End Date: 2016-10-02 These data are not to be used for navigation. For navigation please refer to NOS Nautical Charts. Downloads may take a long time, depending on file size and data transfer rates. Download All Products for H12941
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Survey Products

Descriptive Report and Metadata Documents

NOAA/NOS Descriptive Report
Products listed in the project descriptive report (DR) may not reflect final products available through NCEI.
H12941_DR.pdf	7.55MB	The document may be read using a free Adobe Reader.
H12941_DR.xml	50.0KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H12941 View / Download H12941.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.
H12941_MB_2m_MLLW_1of2.bag	113.00MB
H12941_MB_4m_MLLW_2of2.bag	34.81MB
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. 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.
H12941		XYZ format.

Images

GeoImagePDF
H12941_GeoImage.pdf	26.40MB	NOAA/NOS Layered GeoSpatial Image PDF File. Created by NOS to include chart and survey layers in a georeferenced pdf format.
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.
H12941_MBAB_2m_Taku_400kHz_2of3.tiff	5.18MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.
H12941_MBAB_2m_Benthos_400kHz_1of3.tiff	23.65MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.
H12941_MBAB_2m_Theory_400kHz_3of3.tiff	2.90MB	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 H12941 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
H12941_BottomSamples.ascii	0.9KB	NOAA/NOS bottom sample document in PDF or ASC format.
NOAA/NOS Tide Note in PDF Format
H12941_tn.pdf	69.3KB	This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
H12941_tz.pdf	240.2KB	This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
H12941_ProjectSketch.jpg	116.9KB	Project sketch image with highlighted survey area.
Data Acquisition and Processing Report in PDF format
OPR-K339-KR-16_DAPR.pdf	26.28MB	This document may be read using a free Adobe Reader.
Horizontal and Vertical Control Report in PDF Format
OPR-K339-KR-16_HVCR.pdf	299.1KB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Gulf of Mexico 28 NM West of SW Pass Louisiana

Start Date End Date Approval Date 2016-08-03 2016-10-02 2016-12-05

Project Number Project Name Purpose OPR-K339-KR-16

Source of Original Data

Link to Original Data Data Source

Reference System Information

Vertical Datum Horizontal Datum Projection Scale Mean Lower Low Water World Geodetic System (WGS) 1984 Projected UTM 16 20000

Tide Note Tide Zones Survey Tide Stations COOPS Tide Station ID Aberdeen, Washington 9441187

Affected Products

ENCs RNCs US5LA26M US4LA32M 11358 11346

Junction Surveys

Survey Equipment

Vessel(s) Chief(s) of Party M/V Theory R/V Benthos R/V TAKU David Neff, ACSM C.H.

Manufacturer Model Instrument Type Trimble SPS461 Positioning System R2Sonic 2024 MBES

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 180.431 2018-09-18 07:57:50.0 BACKSCATTER, BATHYMETRY