2014 OLC FEMA Lidar: Sitka, Alaska
Data Set (DS) | OCM Partners (OCMP)GUID: gov.noaa.nmfs.inport:52883 | Updated: October 17, 2023 | Published / External
Summary
Short Citation
OCM Partners, 2025: 2014 OLC FEMA Lidar: Sitka, Alaska, https://www.fisheries.noaa.gov/inport/item/52883.
Full Citation Examples
This record was created by the NOAA Office for Coastal Management (OCM) because no metadata record or data report were available for the data. Information to create this record was found in the Quantum Spatial (WSI) lidar report. A link to this report is provided in the URL section below.
The NOAA Office for Coastal Management (OCM) downloaded this lidar 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). OCM noted that there are many points over water that are classified as ground. OCM processed all points to the Digital Coast Data Access Viewer (DAV).
WSI, a Quantum Spatial Company, has completed the acquisition and processing of Light Detection and Ranging (LiDAR) data of the Oregon LiDAR Consortium (OLC) Alaska FEMA Sitka Survey, for the Oregon Department of Geology and Mineral Industries (DOGAMI). The OLC Alaska FEMA Sitka project area (AOI) encompasses approximately 7,200 acres. Total area flown (TAF) is approximately 9,245 acres. WSI acquired data from May 16 - May 22, 2014. Settings for LiDAR data capture produced an average resolution of at least eight pulses per square meter.
Distribution Information
-
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base.
-
LAS/LAZ - LASer
Bulk download of data files in LAZ format, geographic coordinates, orthometric heights. Note that the vertical datum (hence elevations) of the files here are different than described in this document.
None
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be aware that temporal changes may have occurred since this data set was collected and some parts of this data may no longer represent actual surface conditions.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.
Controlled Theme Keywords
COASTAL ELEVATION, elevation, TERRAIN ELEVATION
Child Items
No Child Items for this record.
Contact Information
Point of Contact
Office for Coastal Management (OCM)
https://www.coast.noaa.gov/
Metadata Contact
NOAA Office for Coastal Management (NOAA/OCM)
coastal.info@noaa.gov
(843) 740-1202
https://coast.noaa.gov
Extents
-135.473° W,
-135.22° E,
57.136° N,
57.021° S
2014-05-16
2014-05-22
Item Identification
Title: | 2014 OLC FEMA Lidar: Sitka, Alaska |
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Short Name: | ak2014_sitka_m8544_metadata |
Status: | Completed |
Publication Date: | 2015 |
Abstract: |
This record was created by the NOAA Office for Coastal Management (OCM) because no metadata record or data report were available for the data. Information to create this record was found in the Quantum Spatial (WSI) lidar report. A link to this report is provided in the URL section below.
The NOAA Office for Coastal Management (OCM) downloaded this lidar 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). OCM noted that there are many points over water that are classified as ground. OCM processed all points to the Digital Coast Data Access Viewer (DAV). WSI, a Quantum Spatial Company, has completed the acquisition and processing of Light Detection and Ranging (LiDAR) data of the Oregon LiDAR Consortium (OLC) Alaska FEMA Sitka Survey, for the Oregon Department of Geology and Mineral Industries (DOGAMI). The OLC Alaska FEMA Sitka project area (AOI) encompasses approximately 7,200 acres. Total area flown (TAF) is approximately 9,245 acres. WSI acquired data from May 16 - May 22, 2014. Settings for LiDAR data capture produced an average resolution of at least eight pulses per square meter. |
Purpose: |
The collection of high resolution geographic data is part of an ongoing pursuit to amass a library of information accessible to government agencies as well as the general public. |
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 > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
|
ISO 19115 Topic Category |
elevation
|
UNCONTROLLED | |
None | beach |
None | erosion |
None | Intensity |
None | mapping |
None | point cloud |
Temporal Keywords
Thesaurus | Keyword |
---|---|
UNCONTROLLED | |
None | 2014 |
None | May |
Spatial Keywords
Thesaurus | Keyword |
---|---|
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
|
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 |
Airplane > Airplane
|
Physical Location
Organization: | Office for Coastal Management |
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City: | Charleston |
State/Province: | SC |
Data Set Information
Data Set Scope Code: | Data Set |
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Data Set Type: | Elevation |
Maintenance Frequency: | Unknown |
Data Presentation Form: | point digital data (LAS) |
Distribution Liability: |
Any conclusions drawn from the analysis of this information are not the responsibility of AK DGGS, NOAA, the Office for Coastal Management or its partners. |
Data Set Credit: | OLC |
Support Roles
Data Steward
Date Effective From: | 2018 |
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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
Date Effective From: | 2018 |
---|---|
Date Effective To: | |
Contact (Organization): | Office for Coastal Management (OCM) |
Address: |
2234 South Hobson Avenue Charleston, SC 29405-2413 |
URL: | https://www.coast.noaa.gov/ |
Metadata Contact
Date Effective From: | 2018 |
---|---|
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
Date Effective From: | 2018 |
---|---|
Date Effective To: | |
Contact (Organization): | Office for Coastal Management (OCM) |
Address: |
2234 South Hobson Avenue Charleston, SC 29405-2413 |
URL: | https://www.coast.noaa.gov/ |
Extents
Currentness Reference: | Ground Condition |
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Extent Group 1
Extent Group 1 / Geographic Area 1
W° Bound: | -135.473 | |
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E° Bound: | -135.22 | |
N° Bound: | 57.136 | |
S° Bound: | 57.021 |
Extent Group 1 / Time Frame 1
Time Frame Type: | Discrete |
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Start: | 2014-05-16 |
Extent Group 1 / Time Frame 2
Time Frame Type: | Discrete |
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Start: | 2014-05-22 |
Access Information
Security Class: | Unclassified |
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Data Access Procedure: |
Data is available online for custom or bulk 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
Start Date: | 2018 |
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End Date: | Present |
Download URL: | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8544 |
Distributor: | |
File Name: | Customized Download |
Description: |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. A new metadata will be produced to reflect your request using this record as a base. |
Compression: | Zip |
Distribution 2
Start Date: | 2018 |
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End Date: | Present |
Download URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8544/index.html |
Distributor: | |
File Name: | Bulk Download |
Description: |
Bulk download of data files in LAZ format, geographic coordinates, orthometric heights. Note that the vertical datum (hence elevations) of the files here are different than described in this document. |
File Type (Deprecated): | LAZ |
Distribution Format: | LAS/LAZ - LASer |
Compression: | Zip |
URLs
URL 1
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
URL: | https://coast.noaa.gov/dataviewer/ |
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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
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8544/supplemental/ak2014_sitka_m8544.kmz |
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Name: | Browse graphic |
URL Type: |
Browse Graphic
|
File Resource Format: | KML |
Description: |
This graphic displays the footprint for this lidar data set. |
URL 4
URL: | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid12b/8544/supplemental/ak2014_sitka_m8544_lidar_report.pdf |
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URL Type: |
Online Resource
|
Description: |
Link to the lidar report. |
Technical Environment
Description: |
Microsoft Windows 7; ESRI ArcCatalog 9.3.1.1850 |
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Data Quality
Horizontal Positional Accuracy: |
Not provided |
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Vertical Positional Accuracy: |
Vertical Accuracy reporting is designed to meet guidelines presented in the National Standard for Spatial Data Accuracy (NSSDA) (FGDC, 1998) and the ASPRS Guidelines for Vertical Accuracy Reporting for LiDAR Data V1.0 (ASPRS, 2004). The statistical model compares known ground check points to the closest laser point. Vertical accuracy statistical analysis uses ground control points in open areas where the LiDAR system has a “very high probability” that the sensor will measure the ground surface and is evaluated at the 95th percentile. For the OLC Alaska FEMA Sitka study area 317 GCP points were collected. Statistics are calculated on the cumlative sum of all points collected for all deliveries. For this project, no independent survey data were collected, nor were reserved points collected for testing. As such, vertical accuracy statistics are reported as “Compiled to Meet.” Vertical Accuracy is reported for the entire study area. The RMSE is 0.03 m. |
Lineage
Sources
Originator
Process Steps
Process Step 1
Description: |
The NOAA Office for Coastal Management (OCM) downloaded 80 laz files from the Alaska Division of Geological and Geophysical Surveys data Portal (https://elevation.alaska.gov/). The files contained classified elevation and intensity measurements for the 2014 OLC FEMA Sitka data set. The data were in Alaska State Plane, Zone 5001 coordinates (NAD83, US survey feet) and NAVD88 elevations (GEOID12A) in feet. The data were classified: 1 - Unclassified, 2 - Ground, 7 - Noise. OCM noted that there are many points over water that are classified as ground. OCM processed all points to the Digital Coast Data Access Viewer (DAV). OCM performed the following processing on the data for Digital Coast storage and provisioning purposes: 1. The LAStools software scripts lasinfo and lasvalidate were run on the laz files to check for errors. 2. An internal OCM script was run to check the number of points by classification and by flight ID and the gps and intensity ranges. 3. Internal OCM scripts were run on the laz files to convert from Alaska State Plane, Zone 5001 coordinates to geographic coordinates, to convert from NAVD88 elevations to ellipsoid elevations using the GEOID12A model, to convert from feet to meters, to assign the geokeys, to sort the data by gps time and zip the data to database and to http. |
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Process Date/Time: | 2018-06-18 00:00:00 |
Process Contact: | Office for Coastal Management (OCM) |
Catalog Details
Catalog Item ID: | 52883 |
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GUID: | gov.noaa.nmfs.inport:52883 |
Metadata Record Created By: | Rebecca Mataosky |
Metadata Record Created: | 2018-06-18 13:05+0000 |
Metadata Record Last Modified By: | SysAdmin InPortAdmin |
Metadata Record Last Modified: | 2023-10-17 16:12+0000 |
Metadata Record Published: | 2022-03-16 |
Owner Org: | OCMP |
Metadata Publication Status: | Published Externally |
Do Not Publish?: | N |
Metadata Last Review Date: | 2022-03-16 |
Metadata Review Frequency: | 1 Year |
Metadata Next Review Date: | 2023-03-16 |