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Report for H13112 Locality: Southwestern Alaskan Peninsula Sublocality: Unimak Bight Channel State(s) or Region(s): Alaska Start Date: 2018-06-11 End Date: 2018-07-21 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 H13112
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Survey Products

Descriptive Report and Metadata Documents

NOAA/NOS Descriptive Reports and Metadata Documents
Products listed in these reports may not reflect final products available through NCEI.
H13112_DR.pdf	3.18MB	The document may be read using a free Adobe Reader.
H13112_DR.xml	41.8KB	Descriptive Report in XML format. May be opened using a web browser or text viewer.
NOAA/NOS ISO metadata record
H13112 View / Download H13112.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.
H13112_MB_4m_MLLW_1of2.bag	19.87MB
H13112_MB_8m_MLLW_2of2.bag	49.37MB
Ellipsoid Referenced BAG Files
Ellipsoid referenced Bag files have a vertical datum that may differ materially from the charted datum. Please refer to the file level metadata to ensure proper display.
H13112_MB_8m_Ellipsoid_2of2.bag	49.41MB
H13112_MB_4m_Ellipsoid_1of2.bag	20.06MB

Images

GeoImagePDF
H13112_GeoImage.pdf	19.97MB	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.
H13112_MBAB_2m_Q105_400kHz_1of2.tif	131.89MB	NOAA/NOS TIFF multibeam acoustic backscatter mosaic survey image.
H13112_MBAB_2m_ASVCW5_400kHz_2of2.tif	139.21MB	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 H13112 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
H13112_BottomSamples.ascii	1.6KB	NOAA/NOS bottom sample document in PDF or ASC format.
Zip file containing bottom sample images and a shapefile of their locations
H13112_BottomSamples_shp_images.zip	10.20MB	Images may be viewed as standalone products or the shapefile can also be used to display where the images were taken.
NOAA/NOS Tide Note in PDF Format
H13112_tn.pdf	102.4KB	This document may be read using a free Adobe Reader.

Project Documents

Project Sketch in JPEG format
H13112_ProjectSketch.jpg	180.3KB	Project sketch image with highlighted survey area.
Data Acquisition and Processing Report in PDF format
OPR-P377-KR-18_DAPR.pdf	10.56MB	This document may be read using a free Adobe Reader.
Horizontal and Vertical Control Report in PDF Format
OPR-P377-KR-18_HVCR.pdf	5.00MB	This document may be read using a free Adobe Reader.

Survey Metadata

Survey Summary

Locality Sublocality State or Region Southwestern Alaskan Peninsula Unimak Bight Channel Alaska

Start Date End Date Approval Date 2018-06-11 2018-07-21 2018-12-29

Project Number Project Name Purpose OPR-P377-KR-18

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 3 40000

Affected Products

ENCs RNCs US4AK5CM US3AK61M

Junction Surveys H13115 H13114 H13113 H12065

Survey Equipment

Vessel(s) Chief(s) of Party ASV-CW5 Qualifier 105 Andrew Orthmann

Manufacturer Model Instrument Type Valeport rapidSV Sound Speed System Teledyne RESON SeaBat T50-P MBES Applanix POS MV 320 v5 Positioning and Attitude System Applanix POS MV 320 v4 Positioning and Attitude System Trimble 5700 DGPS Receiver Satellite DGPS

Source Data at NCEI

Data in Archive Size (in GB) Date Archived Data Types Surveyed Raw and Processed 508.601 2021-08-04 22:52:22.0 BACKSCATTER, BATHYMETRY