2009 Federal Emergency Management Agency (FEMA) Topographic LiDAR: Fort Kent, Maine
OCM Partners
Data Set
(DS)
| ID: 49788
| Published / External
Created: 2017-11-15
|
Last Modified: 2022-08-09
Project (PRJ) | ID: 49401
ID: 49788
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | 2009 Federal Emergency Management Agency (FEMA) Topographic LiDAR: Fort Kent, Maine |
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Short Name | me2009_fema_fortkent_m2481_metadata |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2013-04 |
* » Abstract |
Camp Dresser McKee Inc. contracted with Sanborn Map Company to provide LiDAR mapping services for Fort Kent, Maine. Utilizing multi-return systems, Light Detection and Ranging (LiDAR) data in the form of 3-dimensional positions of a dense set of mass points was collected in spring 2009 for 187 square miles along the St. Johns River and the Fish River. The Leica ALS-50 LiDAR system was used to collect data for the survey campaign. The nominal point spacing of this data set is 1.4 meters. Leica ALS-50 LiDAR System Acquisition Parameters: Average Altitude: 1400 Meters above ground level Airspeed: ~120 Knots Scan Frequency: 36 Hertz Scan Width Half Angle: 20 Degrees Pulse Rate: 76,200 Hertz |
* Purpose |
LiDAR points used in conjunction with LiDAR derived breaklines to determine a DTM surface. |
Notes |
10432 |
Other Citation Details | |
• Supplemental Information |
A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2481/supplemental/me2009_fema_fortkent_footprint.KMZ A survey report for this data set may be viewed in PDF format at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2481/supplemental/me2009_fema_fortkent_surveyreport.pdf |
DOI (Digital Object Identifier) | |
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DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | elevation |
None | Land Surface |
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* Spatial Keywords
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Physical Location
• » Organization | Office for Coastal Management |
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• » City | Charleston |
• » State/Province | SC |
• Country | |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | |
• Maintenance Frequency | As Needed |
Maintenance Note | |
» Data Presentation Form | las |
• Entity Attribute Overview |
LiDAR points in LAS 1.1 format |
Entity Attribute Detail Citation |
The Survey Report referenced in the Supplemental_Information section above contains a detailed description of the data themes and references to other relevant information. |
Entity Attribute Detail URL | |
Distribution Liability |
Any conclusions drawn from the analysis of this information are not the responsibility of Camp Dresser McKee Inc, Sanborn Map Company, FEMA, NOAA, the Office for Coastal Management or its partners. |
Data Set Credit |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2013-04 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Distributor |
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* » Date Effective From | 2013-04 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Metadata Contact |
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* » Date Effective From | 2013-04 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
Business Hours | |
Contact Instructions |
* » Support Role | Point of Contact |
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* » Date Effective From | 2013-04 |
Date Effective To | |
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 |
Fax | |
Mobile | |
URL | https://coast.noaa.gov |
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* Contact Instructions |
Extents
Currentness Reference | Ground Condition |
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Extent Group 1
Extent Description |
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Extent Group 1 / Geographic Area 1
* » W° Bound | -69.156918 |
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* » E° Bound | -68.32496 |
* » N° Bound | 47.376866 |
* » S° Bound | 47.019353 |
* » Description |
Extent Group 1 / Vertical Extent
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Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Discrete |
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* » Start | 2009-05-13 |
End | |
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Description |
Spatial Information
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Equivalent Scale Denominator | |
Level of Detail Description |
Spatial Representation
Grid Representation Used? | |
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Vector Representation Used? | Yes |
Text / Table Representation Used? | |
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Reference Systems
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Access Information
* » Security Class | Unclassified |
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* Security Classification System | |
Security Handling Description | |
• Data Access Policy | |
» Data Access Procedure |
This data can be obtained on-line at the following URL: https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2481 ; |
• » 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. These data depict the heights at the time of the survey and are only accurate for that time. |
Metadata Access Constraints | |
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Distribution Information
Start Date | |
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» Download URL | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=2481 |
Distributor | |
File Name | Customized Download |
Description |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
File Date/Time | |
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Compression | |
Review Status |
Start Date | |
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» Download URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/2481/index.html |
Distributor | |
File Name | Bulk Download |
Description |
Simple download of data files. |
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URLs
URL | https://coast.noaa.gov/dataviewer |
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Name | |
URL Type | Online Resource |
File Resource Format | |
Description |
URL | https://coast.noaa.gov |
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URL Type | Online Resource |
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Activity Log
Activity Time | 2016-05-23 |
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Activity Type | |
Responsible Party | |
Description |
Date that the source FGDC record was last modified. |
Activity Time | 2017-11-14 |
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Activity Type | |
Responsible Party | |
Description |
Converted from FGDC Content Standards for Digital Geospatial Metadata (version FGDC-STD-001-1998) using 'fgdc_to_inport_xml.pl' script. Contact Tyler Christensen (NOS) for details. |
Activity Time | 2018-02-08 |
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Activity Type | |
Responsible Party | |
Description |
Partial upload of Positional Accuracy fields only. |
Activity Time | 2018-03-13 |
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Responsible Party | |
Description |
Partial upload to move data access links to Distribution Info. |
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Issues
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Technical Environment
Description |
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Data Quality
Representativeness | |
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Accuracy | |
Analytical Accuracy | |
Horizontal Positional Accuracy |
Lidar acquired and processed to meet 1m (RMSE) horizontal accuracy.; Quantitative Value: 1.0 meters, Test that produced the value: Units in meters. Horizontal point accuracy is a function of angular origination of the pulse; IMU orientation; the scanner encoder and ranging function and will vary depending on the proposed point density selected for the collection. Statistically, the error is roughly 1/3 of the illuminated foot print on the ground and is a function of the beam divergences. |
Vertical Positional Accuracy |
The vertical accuracy is based on the Sanborn independent collection of 20 ground survey points distributed throughout the project. The RMSEz of all survey checkpoints tested as .195 ft (6 cm).; Quantitative Value: 0.06 meters, Test that produced the value: Tested RMSEz. Units in meters. |
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Completeness Measure | |
Precision | |
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Field Precision | |
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Detection Limit | |
Completeness Report |
A visual qualitative assessment was performed in the source Lidar dataset. Small data voids were noted by NOAA OCM in tiles 1275-16750 and 1225-17000, these voids are over water and should not impact the quality of the data set. |
Conceptual Consistency |
Data covers the tile scheme provided for the area of interest. |
» Quality Control Procedures Employed |
Data Management
» Have Resources for Management of these Data Been Identified? | |
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» Do these Data Comply with the Data Access Directive? | |
» Is Access to the Data Limited Based on an Approved Waiver? | |
» If Distributor (Data Hosting Service) is Needed, Please Indicate | |
» Approximate Delay Between Data Collection and Dissemination | |
» If Delay is Longer than Latency of Automated Processing, Indicate Under What Authority Data Access is Delayed |
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» Actual or Planned Long-Term Data Archive Location | |
» If World Data Center or Other, Specify | |
» If To Be Determined, Unable to Archive, or No Archiving Intended, Explain |
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» Approximate Delay Between Data Collection and Archiving | |
» How Will the Data Be Protected from Accidental or Malicious Modification or Deletion Prior to Receipt by the Archive? |
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Lineage
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Sources
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Process Steps
Process Step Number | 1 |
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» Description |
The ABGPS, IMU, and raw Leica ALS-50 LiDAR data are integrated into the LEICA ALS post processor software. The resultant file is in a LAS binary file format. The LAS file version 1.1 formats can be easily transferred from one file format to another. It is a binary file format that maintains information specific to the LiDAR data (return#, intensity value, xyz, etc.). The resultant points are produced in the geodetic coordinates referenced to the NAD83 horizontal datum and GRS80 vertical datum. |
Process Date/Time | 2009-05-13 00:00:00 |
Process Contact | |
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Source |
Process Step Number | 2 |
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» Description |
The unedited data are classified to facilitate the application of the appropriate feature extraction filters. A combination of proprietary filters is applied as appropriate for the production of bare earth digital terrain models (dtms). Interactive editing methods are applied to those areas where it is inappropriate or impossible to use the feature extraction filters, based upon the design criteria and/or limitations of the relevant filters. These same feature extraction filters are used to produce elevation height surfaces. The LiDAR mass points were delivered in American Society for Photogrammetry and Remote Sensing LAS 1.1 format. The header file for each dataset is complete as define by the LAS 1.1 specification. The data was classified as follows: Class 1 = Unclassified. This class includes vegetation, buildings, noise etc. Class 2 = Ground. |
Process Date/Time | 2009-01-01 00:00:00 |
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Process Step Number | 3 |
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» Description |
Conversion from Geodetic coordinates wgs84 into Maine State Plane East coordinates using NAD83 and conversion from ellipsoid heights (meters) into orthometric heights (U.S. Survey Feet). |
Process Date/Time | 2009-01-01 00:00:00 |
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Source |
Process Step Number | 4 |
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» Description |
The NOAA Office for Coastal Management (OCM) received the topographic files in .las.gz compressed format. The files were LAS version 1.1. The files contained lidar elevation measurements. The data were received in NAD83 Maine State Plane 2000 East coordinates coordinates and were vertically referenced to NAVD88 using the Geoid03 model. The vertical units of the data were feet. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. The compressed .las.gz files were uncompressed to LASV1.1 format. 2. The topographic las files were converted from a Projected Coordinate System (Maine SP 2000 East) to a Geographic Coordinate system (GCS). 3. The topographic las files' horizontal units were converted from feet to decimal degrees. 4. The topographic las files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid03. 5. The topographic las files' vertical units were converted from feet to meters. |
Process Date/Time | 2013-04-01 00:00:00 |
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Acquisition Information
Instruments
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FAQs
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Child Items
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Related Items
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Catalog Details
Catalog Item ID | 49788 |
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Metadata Record Created By | Anne Ball |
Metadata Record Created | 2017-11-15 15:22+0000 |
Metadata Record Last Modified By | SysAdmin InPortAdmin |
» Metadata Record Last Modified | 2022-08-09 17:11+0000 |
Metadata Record Published | 2022-03-16 |
Owner Org | OCMP |
Metadata Publication Status | Published Externally |
Do Not Publish? | N |
Metadata Workflow State | Published / External |
Metadata Last Review Date | 2022-03-16 |
Metadata Review Frequency | 1 Year |
Metadata Next Review Date | 2023-03-16 |
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