2010 ARRA Lidar: Lee County (SC)
OCM Partners
Data Set
(DS)
| ID: 49989
| Published / External
Created: 2017-11-15
|
Last Modified: 2022-08-09
Project (PRJ) | ID: 49401
ID: 49989
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | 2010 ARRA Lidar: Lee County (SC) |
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Short Name | sc2010_arra_lee_m4804_metadata |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2011-05 |
* » Abstract |
Provide high density LiDAR elevation data map of Lee County, SC. Provide Bare Earth DEM (vegetation removal) of Lee County, SC. |
* Purpose |
This LIDAR operation was designed to provide a high density set of masspoints within the defined areas. The data sets are suitable for the development of contours for use in hydraulic/hydrologic model development, and for assessing environmental impacts.Typical uses for the data set include: FEMA Flood Plain Map Modernization. DFIRM map updates. Watersheds and other hydro studies per FEMA specifications. County Mapping projects which include several uses, in addition to Flood mitigation assessment. Mapping projects that include accuracy verification, reporting and meta data. |
Notes |
10633 |
Other Citation Details | |
• Supplemental Information |
The lidar report for this data set may be viewed at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4804/supplemental/sc2010_arra_lee_m4804_lidarreport.pdf A footprint of this data set may be viewed in Google Earth at: https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4804/supplemental/sc2010_arra_lee_m4804.kmz |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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ISO 19115 Topic Category | elevation |
None | Surface |
None | Terrain |
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* Spatial Keywords
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Stratum Keywords
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Platform 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 | |
Maintenance Note |
None planned |
» Data Presentation Form | LAS |
• Entity Attribute Overview |
LAS 1.2 |
Entity Attribute Detail Citation |
See process steps within this metadata record for specific methodology |
Entity Attribute Detail URL | |
Distribution Liability |
Any conclusions drawn from the analysis of this information are not the responsibility of Sanborn, SC DNR, USGS, 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 | 2011-05 |
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 | 2011-05 |
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 | 2011-05 |
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 | 2011-05 |
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 | |
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* » Date Effective From | |
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* » Contact | |
* Contact Instructions |
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* Contact Instructions |
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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 | -81.4876137 |
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* » E° Bound | -79.992716 |
* » N° Bound | 34.3724967 |
* » S° Bound | 33.9467263 |
* » Description |
Extent Group 1 / Vertical Extent
EPSG Code | |
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Vertical Minimum | |
Vertical Maximum |
Extent Group 1 / Time Frame 1
* » Time Frame Type | Range |
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* » Start | 2010-02-21 |
End | 2010-03-25 |
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Description |
Spatial Information
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Spatial Representation
Grid Representation Used? | |
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Vector Representation Used? | Yes |
Text / Table Representation Used? | |
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Stereo Model Representation Used? | |
Video Representation Used? |
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Reference Systems
Reference System
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Access Information
Data License | |
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Data License URL | |
Data License Statement | |
* » Security Class | Unclassified |
* 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=4804 The data set is dynamically generated based on user-specified parameters; |
• » 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 | |
Metadata Use Constraints |
This dataset is not valid without the signed and sealed copy of the Florida Minimum Technical Standards Report of Specific Purpose Survey dated 4/31/2008. Please refer to this document for user constraints. |
Distribution Information
Start Date | |
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» Download URL | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=4804 |
Distributor | |
File Name | Customized Download |
Description |
Create custom data files by choosing data area, product type, map projection, file format, datum, etc. |
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Start Date | |
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» Download URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4804/index.html |
Distributor | |
File Name | Bulk Download |
Description |
Simple download of data files. |
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Archive Information
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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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Name | |
URL Type | Online Resource |
File Resource Format | |
Description |
URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/4804/supplemental/sc2010_arra_lee_m4804.kmz |
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Name | Browse Graphic |
URL Type | Browse Graphic |
File Resource Format | kmz |
Description |
This graphic shows the lidar coverage for the 2010 ARRA lidar for Lee County, SC. |
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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 |
The flight missions were typically four or five hours in duration including runway calibration flights flown at the beginning and the end of each mission. During the data collection, the operator recorded information on log sheets which includes weather conditions, LiDAR operation parameters, and flight line statistics. Near the end of the mission GPS ambiguities are again resolved by flying within ten kilometers of the base stations, to aid in post-processing. |
Analytical Accuracy | |
Horizontal Positional Accuracy |
Federal Emergency Management Administration (FEMA) LiDAR Specifications; Quantitative Value: 1.00 meters, Test that produced the value: Processing accuracies and requirements |
Vertical Positional Accuracy |
Federal Emergency Management Administration (FEMA) LiDAR Specifications; 15 cm RMSE; Quantitative Value: 0.15 meters, Test that produced the value: Preliminary data processing was performed in the field immediately following the missions for quality control of GPS data and to ensure sufficient overlap between flight lines. Any problematic data could then be re-flown immediately as required. Final data processing was completed in the Colorado Springs office. |
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Completeness Measure | |
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Analytical Precision | |
Field Precision | |
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Detection Limit | |
Completeness Report |
Complete |
Conceptual Consistency |
A minimum of two GPS base stations were set for the Lee County project, which is within the project area or within the required baseline specifications of the project. Pre-flight checks such as cleaning the sensor head glass are performed. A four minute INS initialization is conducted on the ground, with the engines running, prior to flight, to establish fine-alignment of the INS. GPS ambiguities are resolved by flying within ten kilometers of the base stations. |
» Quality Control Procedures Employed |
Data Management
» Have Resources for Management of these Data Been Identified? | |
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» Approximate Percentage of Budget for these Data Devoted to Data Management | |
» 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
» Lineage Statement |
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Sources
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Process Steps
Process Step Number | 1 |
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» Description |
Data Collection: Using an Optech Light Detection And Ranging (LiDAR) system, 103 flight lines of standard density (1.4 meter ground sample distance) data were collected over areas in Lee, SC (approximately 395 square miles). Multiple returns were recorded for each laser pulse along with an intensity value for each return. The data acquisition occurred in 6 missions between March 14, 2010 , and March 20, 2010. During the LIDAR campaign, the LMSI field crew conducted a GPS field survey to establish final coordinates of the ground base stations for final processing of the base-remote GPS solutions |
Process Date/Time | 2010-02-21 00:00:00 |
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Email Address | |
Source |
Process Step Number | 2 |
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» Description |
Airborne GPS Processing: Airborne GPS data was differentially processed and integrated with the post processed IMU data to derive a Smoothed Best Estimate of Trajectory (SBET). The SBET was used to reduce the LiDAR slant range measurements to a raw reflective surface for each flight line. The overlap between flight lines was removed to provide a homogeneous coverage, and the coverage was classified to extract a bare earth digital elevation model (DEM). Airborne GPS is differentially processed using the GrafNAV V7.50 software by Waypoint Consulting of Calgary, Alberta, Canada. The PDOP and distance separation is as follows: The classification and quality control (QC) of LiDAR data is carried out using TerraScan software by Terrasolid Limited of Helinski, Finland. |
Process Date/Time | 2010-04-01 00:00:00 |
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Process Step Number | 3 |
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» Description |
IMU data Processing: IMU data provides information concerning roll, pitch and yaw of collection platform during collection event. IMU information allows the pulse vector to be properly placed in 3D space allowing the distance from the aircraft reference point to be properly positioned on the elevation model surface. The IMU data is processed using the PosPac V4.2 software by Applanix Corporation of Richmond Hill, Ontario, Canada. The reflective surface is derived using the ALS Post Processor software by Leica Geosystems GIS & Mapping Division of Atlanta, Georgia. |
Process Date/Time | 2010-04-01 00:00:00 |
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Process Step Number | 4 |
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» Description |
LIDAR Point Classification: The classification and quality control (QC) of LiDAR data is carried out using TerraScan software by Terrasolid Limited of Helinski, Finland. |
Process Date/Time | 2010-05-01 00:00:00 |
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Process Step Number | 5 |
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» Description |
The NOAA Office for Coastal Management (OCM) received the files in laz format from USGS via an FTP online repository. The files contained lidar elevation and intensity measurements. The data were in State Plane Zone 3900 (South Carolina, NAD83) in feet, NAVD88 (orthometric) heights in feet. OCM performed the following processing for data storage and Digital Coast provisioning purposes: 1. The LAS files were converted from SPCS coordinates to geographic coordinates. 2. Erroneous elevations were removed. 3. The LAS files were converted from NAVD88 (orthometric) heights in meters to GRS80 (ellipsoid) heights in meters using Geoid 03. 4. The LAS data were sorted by latitude and the headers were updated. |
Process Date/Time | 2015-04-17 00:00:00 |
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Acquisition Information
Instruments
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Platforms
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FAQs
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Child Items
Rubric scores updated every 15m
Score | Type | Title |
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Related Items
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Catalog Details
Catalog Item ID | 49989 |
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Metadata Record Created By | Anne Ball |
Metadata Record Created | 2017-11-15 15:23+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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