gov.noaa.nmfs.inport:53587
eng
UTF8
dataset
Elevation
OCM Partners
resourceProvider
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
pointOfContact
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
2014 AK DOT Lidar DEM: Bradfield to Behms Corridor, AK
ak2014_bradfield_m8593_metadata
2015-02-27
publication
NOAA/NMFS/EDM
53587
https://www.fisheries.noaa.gov/inport/item/53587
WWW:LINK-1.0-http--link
Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
https://coast.noaa.gov/
WWW:LINK-1.0-http--link
NOAA's Office for Coastal Management (OCM) website
Information on the NOAA Office for Coastal Management (OCM)
download
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8592/supplemental/Bradfield_to_Behms_Tetra_Tech_Report.pdf
WWW:LINK-1.0-http--link
Dataset report
Link to Tetra Tech report.
download
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8592/supplemental/Bradfield_to_Behms_Corridor_Quality_Assurance_Report.pdf
WWW:LINK-1.0-http--link
Quality Assurance Report
Link to UAF Quality Assurace report.
download
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8592
WWW:LINK-1.0-http--link
Citation URL
Link to custom download the lidar point data from which these raster Digital Elevation Model (DEM) data were created.
download
https://coast.noaa.gov/dataviewer/
WWW:LINK-1.0-http--link
NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV)
The Data Access Viewer (DAV) allows a user to search for and download elevation, imagery, and land cover data for the coastal U.S. and its territories. The data, hosted by the NOAA Office for Coastal Management, can be customized and requested for free download through a checkout interface. An email provides a link to the customized data, while the original data set is available through a link within the viewer.
download
Because no metadata record was provided with the Bradfield to Behms Corridor data, this record was created by the NOAA Office for Coastal Management (OCM) based on information supplied in the Bradfield to Behms Corridor Quality Assurance Report of DOT Roads to Resources Project, the Tetra Tech UAF Light Detection and Ranging (LiDAR) and Ortho-Imagery Data Project Report Bradfield to Behms Corridor, and the Hoonah Corridor metadata. Links to both reports are provided in the URL section of this record.
Tetra Tech was contracted by the University of Alaska Fairbanks (UAF) to provide LiDAR and ortho-imagery data for the Road to Resources in Alaska Program. Tetra Tech collected LIDAR data and aerial imagery during the fall of 2013 and the spring/summer of 2014.
This data is part of a data set of LiDAR point cloud data, derived elevation products and orthoimagery. The data were acquired along 5 corridors in South Eastern Alaska near Ketchikan and Juneau. The data were procured by GINA (Geographic Information Network of Alaska) at the University of Fairbanks (UAF) on behalf of the Alaska DoT (Department of Transportation). The 5 corridors are identified as Anita Bay, Bradfield to Behms, Hoonah, Revilla and Wrangell.
The NOAA Office for Coastal Management (OCM) downloaded this bare earth raster data from the AK DGGS site (https://elevation.alaska.gov/) and processed the data to be available on the Digital Coast Data Access Viewer (DAV).
In addition to these bare earth Digital Elevation Model (DEM) data, the lidar point data that these DEM data were created from, are also available. These data are available for custom download at the link provided in the URL section of this metadata record.
The purpose of this LiDAR data is to support transportation planning within the Road to Resources Program in Alaska.
Geographic Information Network of Alaska (GINA), University of Alaska Fairbanks, (UAF), Department of Transportation (DoT) Alaska, Tetra Tech Geomatic Technologies Group
completed
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
pointOfContact
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
custodian
notPlanned
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8592/supplemental/ak2014_bradfield_m8592.kmz
This graphic displays the footprint for this lidar data set.
KML
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
theme
Global Change Master Directory (GCMD) Science Keywords
17.0
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA
VERTICAL LOCATION > LAND SURFACE
place
Global Change Master Directory (GCMD) Location Keywords
17.0
LIDAR > Light Detection and Ranging
instrument
Global Change Master Directory (GCMD) Instrument Keywords
17.2
Airplane > Airplane
DEM > Digital Elevation Model
platform
Global Change Master Directory (GCMD) Platform Keywords
17.2
DEM
Roads to Resources
beach
erosion
theme
DEMs - partner (no harvest)
project
InPort
otherRestrictions
Cite As: OCM Partners, [Date of Access]: 2014 AK DOT Lidar DEM: Bradfield to Behms Corridor, AK [Data Date Range], https://www.fisheries.noaa.gov/inport/item/53587.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
otherRestrictions
Access Constraints: None
otherRestrictions
Use Constraints: Users should be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions. Users should not use this data for critical applications without a full awareness of its limitations.
otherRestrictions
Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
53587
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocmp/dmp/pdf/53587.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
eng; US
elevation
-131.614093
-131.377572
55.959214
56.188409
| Currentness: Ground Condition
2014-06-26
| Currentness: Ground Condition
2014-06-27
| Currentness: Ground Condition
2014-07-11
Zip
Zip
GeoTIFF
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
distributor
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8593
WWW:LINK-1.0-http--link
Customized Download
Create custom data files by choosing data area, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base.
download
https://noaa-nos-coastal-lidar-pds.s3.us-east-1.amazonaws.com/dem/AK_Bradfield_DEM_2014_8593/index.html
WWW:LINK-1.0-http--link
Bulk Download
Bulk download of data files in orthometric heights
download
dataset
Vertical Positional Accuracy
OCM found that there were 2 different values for the vertical accuracy in the two reports available for this data set. According to the Tetra Tech report (9 check points) referenced in the URL section of this metadata record, the value is 0.31 ft/9.4 cm RMSE. According to the UAF report (9 check points), also referenced in the URL section of this metadata record, the value is 7 cm RMSE.
Completeness Report
All LAS files and derived products have been visually inspected for completeness inside the project area of interest and passed inspection. Derived products contain gridded DEM, DSM and intensities, TIN data created in AutoCAD Civil3D and landxml export files.
Conceptual Consistency
All data has been checked by automatic tools and visual inspection.
The LiDAR data for the Bradfield to Behms corridor was acquired on June 26 and 27 and July 11 of 2014. SBET and shapefile of the trajectory are located with the point cloud data. The data was post processed through PosPac, Waypoint’s GPS and IMU (inertial measurement unit) post processing software, and LMS, Optech’s LiDAR post processing software. PosPac is used to generate the trajectory file which contains the position (X, Y, Z) from differential GPS observations and the plane’s attitude (roll, pitch, heading) from the IMU. LMS is used to join the discreet point range information to the trajectory information through a common time stamp and to calibrate the data. The calibration is achieved by first identifying common features in the overlap of adjacent flight lines, and then adjustments are applied to the IMU’s angular offsets to align the data. Once finished, LMS refines the calibration further through a bundle adjustment to create the final calibrated data set.
Classification of the calibrated LiDAR data set is achieved through the use of TerraScan, the industry standard software from TerraSolid for classifying LiDAR. Individual macros were defined that derive and refine a ground surface, vegetation, and buildings. These macros are also used to eliminate spurious points below the surface and high point artifacts. The Bradfield to Behms area was then manually checked and edited to eliminate low and high points as well as to ensure that points are classified appropriately.
Breaklines were derived from LiDAR and imagery and help define water classes in the LiDAR data.
The DEM was created using ESRI 3DAnalyst. The individual steps included:
1.Importing all las files into the geodatabase as multipoint, all returns, classes 8 and 9.
2. Importing the breaklines as a feature layer.
3. Creating a terrain in 3D Analyst from all mass-points.
4. Creating a 3’ spacing grid, using the NATURAL_NEIGHBORS interpolation method
5. The ERDAS Imagine mosaic tool was then used to clip and tile the DEM at the same time into individual geotiff tiles
The NOAA Office for Coastal Management (OCM) downloaded 117 tif files from the Alaska Division of Geological and Geophysical Surveys data Portal (https://elevation.alaska.gov/). The data were in Alaska State Plane, Zone 5001 coordinates (NAD83, US survey feet) and NAVD88 elevations (GEOID12A) in feet. The bare earth raster files are at a 3 ft grid spacing.
OCM converted the files to Cloud Optimized GeoTiffs and set the vertical georeferencing using GeoTiff 1.1 format.
2023-06-23T00:00:00
Office for Coastal Management
processor