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Report for H12945 Locality: Gulf of Mexico Sublocality: 12 NM Southwest 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 H12945
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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.
H12945_DR.pdf	5.88MB	The document may be read using a free Adobe Reader.
H12945_DR.xml	44.1KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H12945 View / Download H12945.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.
H12945_MB_8m_MLLW_2of2.bag	16.26MB
H12945_MB_4m_MLLW_1of2.bag	42.49MB
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.
H12945		XYZ format.

Images

GeoImagePDF
H12945_GeoImage.pdf	26.03MB	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.
H12945_MBAB_2m_Taku_400kHz_1of1.tiff	19.05MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.
H12945_MBAB_2m_Theory_400kHz_1of1.tiff	26.34MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.
H12945_MBAB_2m_Benthos_400kHz_1of1.tiff	0.83MB	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 H12945 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
H12945_BottomSamples.ascii	383 Bytes	NOAA/NOS bottom sample document in PDF or ASC format.
NOAA/NOS Tide Note in PDF Format
H12945_tn.pdf	72.4KB	This document may be read using a free Adobe Reader.
NOAA/NOS Tide Zone in PDF format
H12945_tz.pdf	241.8KB	This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
H12945_ProjectSketch.jpg	68.7KB	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 12 NM Southwest 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 16N 40000

Tide Note Tide Zones Survey Tide Stations COOPS Tide Station ID

Affected Products

ENCs RNCs US4LA32M US4LA30M US3GC04M 11366 11361 11358

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 AML Oceanographic BaseX2 Sound Speed System AML Oceanographic BaseX Sound Speed System Trimble SPS461 Positioning System Applanix POS MV 320 v5 Positioning and Attitude System R2Sonic 2024 MBES Trimble DSM232 GPS Receiver Satellite GPS

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 121.718 2019-02-11 14:50:56.0 BACKSCATTER, BATHYMETRY