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Short Citation:
OCM Partners, 2023: 2013 UAF/GINA Lidar DEM: Arctic Coastal Plain, AK, https://www.fisheries.noaa.gov/inport/item/68435.

Item Identification

Title: 2013 UAF/GINA Lidar DEM: Arctic Coastal Plain, AK
Short Name: ak2013_cst_pln_dem_m9660_metadata
Status: Completed
Creation Date: 2013
Publication Date: 2013-10-18
Abstract:

The following are the collection parameters and equipment used to create these data sets:

Aircraft: Piper Navajo (812TB)

LiDAR System: Leica ALS70

Approximate Collection Altitude (Above Mean Terrain): 1070 meters

Ground Speed: 150 kts

Pulse Rate Frequency: 245 kHz

Mirror Scan Frequency: 60 Hz

Scan Angle (+/-): 15 degrees

Accuracy statements are based on areas of moderate terrain, with points classified as ground. Diminished accuracies are to be expected in areas of extreme terrain and dense vegetation. The accuracy of each point is expected to meet the vertical accuracy standard, derived products may be less accurate in areas of extreme terrain and dense vegetation due to a lesser number of points defining the ground in these areas. Classified data sets such as this one may have varying posting due to some pulses not reaching the ground.

The NOAA Office for Coastal Management (OCM) downloaded this data set from this AK DGGS site:

https://elevation.alaska.gov/

These files were processed to make the data available for custom and bulk download from the NOAA Digital Coast Data Access Viewer (DAV) . The total number of files downloaded and processed was 1804.

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.

Purpose:

The purpose of this data set is to provide LiDAR-derived topographic data for transportation planning and road construction.

Keywords

Theme Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > DIGITAL ELEVATION/TERRAIN MODEL (DEM)
Global Change Master Directory (GCMD) Science Keywords
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
ISO 19115 Topic Category
elevation

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > ALASKA
Global Change Master Directory (GCMD) Location Keywords
VERTICAL LOCATION > LAND SURFACE
UNCONTROLLED
None North Slope Alaska
None Nuiqsut

Instrument Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Instrument Keywords
LIDAR > Light Detection and Ranging

Platform Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Platform Keywords
AIRCRAFT

Physical Location

Organization: Office for Coastal Management
City: Charleston
State/Province: SC

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: Elevation
Maintenance Frequency: None Planned
Data Presentation Form: Model (digital)
Distribution Liability:

AeroMetric assumes no liability for the data being used for purposes other than stated in this document.

Any conclusions drawn from the analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners.

Data Set Credit: AeroMetric

Support Roles

Data Steward

CC ID: 1192979
Date Effective From: 2022
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Distributor

CC ID: 1192978
Date Effective From: 2022
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Metadata Contact

CC ID: 1192980
Date Effective From: 2022
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Point of Contact

CC ID: 1192981
Date Effective From: 2022
Date Effective To:
Contact (Organization): NOAA Office for Coastal Management (NOAA/OCM)
Address: 2234 South Hobson Ave
Charleston, SC 29405-2413
Email Address: coastal.info@noaa.gov
Phone: (843) 740-1202
URL: https://coast.noaa.gov

Extents

Currentness Reference: Ground Condition

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 1192986
W° Bound: -151.697191444
E° Bound: -150.880612306
N° Bound: 70.3426315
S° Bound: 70.12477725

Extent Group 1 / Time Frame 1

CC ID: 1192983
Time Frame Type: Discrete
Start: 2013-07-12

Extent Group 1 / Time Frame 2

CC ID: 1192984
Time Frame Type: Discrete
Start: 2013-07-13

Extent Group 1 / Time Frame 3

CC ID: 1192985
Time Frame Type: Discrete
Start: 2013-07-14

Spatial Information

Spatial Representation

Representations Used

Grid: Yes

Reference Systems

Reference System 1

CC ID: 1193009

Coordinate Reference System

CRS Type: Vertical
EPSG Code: EPSG:5703
EPSG Name: NAVD88 height
See Full Coordinate Reference System Information

Reference System 2

CC ID: 1193197

Coordinate Reference System

CRS Type: Projected
EPSG Code: EPSG:6397
EPSG Name: NAD83(2011) / Alaska zone 4
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Procedure:

Data is available online for bulk and custom downloads.

Data Access Constraints:

None

Data 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.

Distribution Information

Distribution 1

CC ID: 1192988
Start Date: 2022-11-16
End Date: Present
Download URL: https://chs.coast.noaa.gov/htdata/raster5/elevation/AK_Coastal_Plain_DEM_2013_9660
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2022 - Present)
File Name: Bulk Download
Description:

Bulk download of data files in the original coordinate system.

File Type: GeoTIFF

Distribution 2

CC ID: 1192987
Start Date: 2022-11-16
End Date: Present
Download URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9660/details/9660
Distributor: NOAA Office for Coastal Management (NOAA/OCM) (2022 - Present)
File Name: Customized Download
Description:

Create custom data files by choosing data area, map projection, file format, etc. A new metadata will be produced to reflect your request using this record as a base.

File Type: Zip
Compression: Zip

URLs

URL 1

CC ID: 1192974
URL: https://coast.noaa.gov/
Name: NOAA's Office for Coastal Management (OCM) website
URL Type:
Online Resource
File Resource Format: HTML
Description:

Information on the NOAA Office for Coastal Management (OCM)

URL 2

CC ID: 1192975
URL: https://coast.noaa.gov/dataviewer/
Name: NOAA's Office for Coastal Management (OCM) Data Access Viewer (DAV)
URL Type:
Online Resource
File Resource Format: HTML
Description:

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.

URL 3

CC ID: 1192976
URL: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/9658/supplemental/ak2013_cst_plain_m9658.kmz
Name: Browse graphic
URL Type:
Browse Graphic
File Resource Format: KML
Description:

This graphic displays the footprint for this lidar data set.

URL 4

CC ID: 1193010
URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=9658/details/9658
Name: Custom Point Download
URL Type:
Online Resource
File Resource Format: Zip
Description:

Link to custom download, from the Data Access Viewer (DAV), the lidar point data from which these raster Digital Elevation Model (DEM) data were created.

Technical Environment

Description:

Microsoft Windows 2000 Version 5.0 (Build 2195) Service

Pack 4; LiDARTools 1.0.9

Data Quality

Horizontal Positional Accuracy:

Data products collected were acquired at or below 1070 meters above mean terrain (AMT) and have a horizontal accuracy of 0.2 meters or better (per manufacturers system specifications) .

Vertical Positional Accuracy:

The vertical accuracy of the Classified Bare Earth for Arctic Coastal Plain is 0.145 US Survey Meters at a 95% confidence level (RMSE*1.96 (95% CI - NSSDA)) in the "Open Terrain" land cover category. 910 survey control points were used for the Arctic Coastal Plain data.

Completeness Report:

Complete

Conceptual Consistency:

QAQC ground survey points were collected by GPS Inc. along the Nuiqsut roads, river and lake edges within the project area.

Lineage

Lineage Statement:

The data were collected for the Alaska Division of Geological and Geophysical Surveys (DGGS) and made available on the AK DGGS Elevation Portal (https://elevation.alaska.gov/). The NOAA Office for Coastal Management (OCM) downloaded the data from this site to make the data available for custom downloads from the NOAA Digital Coast Data Access Viewer and for bulk downloads from https.

Sources

Alaska Division of Geological and Geophysical Surveys (AK DGGS)

CC ID: 1193012
Contact Role Type: Publisher
Contact Type: Organization
Contact Name: AK DGGS
Citation URL: https://elevation.alaska.gov/
Citation URL Name: AK DGGS Elevation Portal

Process Steps

Process Step 1

CC ID: 1192967
Description:

Created a smoothed-best estimated trajectory (SBET) of the sensor at a rate of 200 Hz, by integrating the airborne GPS and IMU data The basis of the GPS coordinates were two dual frequency GPS receivers, collecting data at a rate of 2 Hz operated by Aero-Metric during the acquisition phase of this project, and were referenced to NAD83 (CORS96) ellipsoid heights.

Process Date/Time: 2013-08-01 00:00:00

Process Step 2

CC ID: 1192968
Description:

Integrated SBET and raw laser data to produce point cloud data in LAS 1.2 format for each flight line.

Process Date/Time: 2013-08-18 00:00:00

Process Step 3

CC ID: 1192969
Description:

Processed data calibration: An in-situ calibration was performed using the data collect for this project. The data was classified in each line separately for ground and other common features between lines, such as building roofs. This data was processed in TerraMatch 11.001 (TerraSolid, Ltd.), to compute corrections for roll, pitch, heading, and mirror scale. These corrections are applied in order to minimize discrepancies between flight lines.

Process Date/Time: 2013-08-22 00:00:00

Process Step 4

CC ID: 1192970
Description:

Automated classification of the bare-earth data from the LiDAR point cloud using a series of algorithms customized for the types of terrain encountered in the project.

Process Date/Time: 2013-08-24 00:00:00

Process Step 5

CC ID: 1192971
Description:

Manually classified any data which appears to be improperly classified using the automated methods.

Process Date/Time: 2013-10-17 00:00:00

Process Step 6

CC ID: 1192972
Description:

Created hydro enforced 1 meter resolution bare earth DEMs in GeoTIFF format with world files, using bare earth LAS data.

Process Date/Time: 2013-09-12 00:00:00

Process Step 7

CC ID: 1193011
Description:

The NOAA Office for Coastal Management (OCM) downloaded 1804 raster DEM files in GeoTiff format from the Alaska DGGS Elevation Portal. The data were in AK State Plane Zone 4 NAD83 (2011), meters coordinates and NAVD88 (Geoid12A) elevations in meters. The bare earth raster files were at a 1 meter grid spacing.

OCM performed the following processing on the data for Digital Coast storage and provisioning purposes:

1. Used an internal script to assign the EPSG codes (Horizontal EPSG: 6397 and Vertical EPSG: 5703) to the GeoTiff formatted files.

2. Copied the files to https.

Process Date/Time: 2022-11-16 00:00:00
Process Contact: Office for Coastal Management (OCM)

Related Items

Item Type Relationship Type Title
Data Set (DS) Cross Reference 2013 UAF/GINA Lidar: Arctic Coastal Plain, AK

Catalog Details

Catalog Item ID: 68435
GUID: gov.noaa.nmfs.inport:68435
Metadata Record Created By: Rebecca Mataosky
Metadata Record Created: 2022-11-16 15:05+0000
Metadata Record Last Modified By: Rebecca Mataosky
Metadata Record Last Modified: 2022-11-18 19:29+0000
Metadata Record Published: 2022-11-16
Owner Org: OCMP
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2022-11-16
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2023-11-16