2011 Anne Arundel County, MD, LiDAR Points
OCM Partners
Data Set
(DS)
| ID: 52242
| Published / External
Created: 2018-03-23
|
Last Modified: 2023-10-17
Project (PRJ) | ID: 49401
ID: 52242
Data Set (DS)
* Discovery• First Pass
» Metadata Rubric
Item Identification
* » Title | 2011 Anne Arundel County, MD, LiDAR Points |
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Short Name | 2011 Anne Arundel MD LAS |
* Status | Completed |
Creation Date | |
Revision Date | |
• Publication Date | 2011-09-14 |
* » Abstract |
LAS files of LiDAR data for the entire county of Anne Arundel located in the state of Maryland. |
* 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. Intended uses for the data set include: design, research, floodplain mapping, and hydrologic mapping. Watersheds and other hydro studies per FEMA specifications. |
Notes | |
Other Citation Details | |
• Supplemental Information | |
DOI (Digital Object Identifier) | |
DOI Registration Authority | |
DOI Issue Date |
Keywords
Theme Keywords
Thesaurus | Keyword |
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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 |
MD | Drainage Area |
MD | Hydraulic |
MD | Hydrographic |
MD | Hydrologic Modeling |
MD | Hydrology |
MD | LiDAR |
None | erosion |
Temporal Keywords
Thesaurus | Keyword |
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* Spatial Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Location Keywords | CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MARYLAND |
Global Change Master Directory (GCMD) Location Keywords | VERTICAL LOCATION > LAND SURFACE |
MD | Anne Arundel County |
MD | Maryland |
Stratum Keywords
Thesaurus | Keyword |
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Instrument Keywords
Thesaurus | Keyword |
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Global Change Master Directory (GCMD) Instrument Keywords | LIDAR > Light Detection and Ranging |
Platform Keywords
Thesaurus | Keyword |
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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 |
• Country | |
• » Location Description |
Data Set Information
* Data Set Scope Code | Data Set |
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• Data Set Type | Elevation |
• Maintenance Frequency | None Planned |
Maintenance Note | |
» Data Presentation Form | point data |
• Entity Attribute Overview | |
Entity Attribute Detail Citation |
5000 foot by - 5000 foot modular tile index. |
Entity Attribute Detail URL | |
Distribution Liability |
Any materials originally developed by the Government shall be and remain the sole property of the United States. "Materials" for these purposes shall mean any and all information including but not limited to data, images, analyses, and reports, regardless of form or medium. Information supplied by the Government - shape files of maps defining the shape and size of the area to be mapped and surveyed. 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 | Sanborn Map Company, Inc |
Support Roles
* » Support Role | Data Steward |
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* » Date Effective From | 2018 |
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 | 2018 |
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 | 2018 |
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 | 2018 |
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 |
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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 | -76.842309 |
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* » E° Bound | -76.391286 |
* » N° Bound | 39.23855 |
* » S° Bound | 38.711028 |
* » 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 | 2011-03-01 |
End | 2011-03-02 |
Alternate Start As Of Info | |
Alternate End As Of Info | |
Description |
Spatial Information
Spatial Resolution
Angular Distance | |
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Angular Distance Units | |
Horizontal Distance | 1.4 |
Horizontal Distance Units | Meter |
Vertical Distance | |
Vertical Distance Units | |
Equivalent Scale Denominator | |
Level of Detail Description |
Spatial Representation
Grid Representation Used? | |
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Vector Representation Used? | Yes |
Text / Table Representation Used? | |
TIN Representation Used? | |
Stereo Model Representation Used? | |
Video Representation Used? |
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Vector Representation
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Reference Systems
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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 |
Data is available online for 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. |
Metadata Access Constraints | |
Metadata Use Constraints |
Distribution Information
Start Date | 2018 |
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End Date | Present |
» Download URL | https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=8494 |
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 | |
File Type (Deprecated) | |
Distribution Format | |
File Size | |
Application Version | |
Compression | Zip |
Review Status |
Start Date | 2018 |
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End Date | Present |
» Download URL | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8494/index.html |
Distributor | |
File Name | Bulk Download |
Description |
Bulk download of data files in LAZ format, geographic coordinates, orthometric heights. |
File Date/Time | |
File Type (Deprecated) | LAZ |
Distribution Format | LAS/LAZ - LASer |
File Size | |
Application Version | |
Compression | Zip |
Review Status |
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» Download URL | |
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URLs
URL | https://coast.noaa.gov/ |
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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 | 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 | https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/8494/supplemental/2011_Anne_Arundel_area.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 | http://imap.maryland.gov/Pages/lidar.aspx |
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Name | Maryland iMAP |
URL Type | Online Resource |
File Resource Format | |
Description |
Location of original point cloud downloads. Has other information, such as DEMs. |
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Activity Log
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Issues
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Issue |
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Author | |
Issue |
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Author | |
Issue |
Technical Environment
Description |
Microsoft Windows Vista Version 6.1 (Build 7600) ; ESRI ArcCatalog 9.3.1.1850 |
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Data Quality
Representativeness | |
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Accuracy | |
Analytical Accuracy | |
Horizontal Positional Accuracy |
GCS_North_American_1983/1996_HARN2_Maryland State Plane Coordinate System_US Survey Feet LiDAR Specifications; .32 Ft RMSE |
Vertical Positional Accuracy |
North American Vertical Datum 1988 (NAVD 88) LiDAR Specifications; .49 Ft RMSE |
Quantitation Limits | |
Bias | |
Comparability | |
Completeness Measure | |
Precision | |
Analytical Precision | |
Field Precision | |
Sensitivity | |
Detection Limit | |
Completeness Report |
None |
Conceptual Consistency |
None |
» 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
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Sources
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Process Steps
Process Step Number | 1 |
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» Description |
Data Collection: Using a Leica Light Detection And Ranging (LiDAR) system, (1.4 meter ground sample distance) data were collected over the entire area of Anne Arundel County, MD (approx 416 square miles). Multiple returns were recorded for each laser pulse along with an intensity value for each return. The data acquisition occurred in 2 missions between March 1, 2011, and March 2, 2011. During the LIDAR campaign, a 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 | 2011-03-01 00:00:00 |
Process Contact | |
Phone (Voice) | |
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 | 2011-05-01 00:00:00 |
Process Contact | |
Phone (Voice) | |
Email Address | |
Source |
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 | 2011-05-01 00:00:00 |
Process Contact | |
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Email Address | |
Source |
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 | 2011-05-01 00:00:00 |
Process Contact | |
Phone (Voice) | |
Email Address | |
Source |
Process Step Number | 5 |
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» Description |
Data were obtained from the Maryland iMap (imap.Maryland.gov) in LAZ format in October 2017. Data were in Maryland State Plane FIPS 1900 U.S. Survey Feet horizontally and vertical NAVD88 feet. The geoid model originally used to obtain NAVD88 was not listed in the metadata, but the files contained georeferencing information indicating that GEOID96 was used. While this was an unusual GEOID to use for 2011 data, there was no other information to the contrary. Data were reprojected to geographic coordinates in degrees. The vertical units were converted to meters and the GEOID96 model was reversed to get ellipsoidal heights. The data were then ingested into the Digital Coast Data Access Viewer for distribution. Point classifications were not defined in the original metadata and many classes were found to have only a few points, likely residual temporary holding classes that were never cleaned up. Class 10 appeared to be ground points that could be used to form a breakline. These were reclassed to the ground class (2). Class 11 appeared to be overlap and were reclassed to the original ASPRS LAS 1.2 standard overlap class of 12. Points classified in what appeared to fit the standard ASPRS definitions (class 0 = created, never classified, class 1 = unclassified, 2 = ground, 7 = low noise, and 9 = water) were not changed. All other classes were reclassed to class 1, typically consisting of less than 100 points for the entire data set per class. |
Process Date/Time | 2018-03-22 00:00:00 |
Process Contact | Office for Coastal Management (OCM) |
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Acquisition Information
Instruments
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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
Item Type | Relationship Type | Title |
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Catalog Details
Catalog Item ID | 52242 |
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Metadata Record Created By | Kirk Waters |
Metadata Record Created | 2018-03-23 09:20+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 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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