gov.noaa.nmfs.inport:49610
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dataset
OCM Partners
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NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
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NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
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2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
2012 USACE Post Sandy Topographic LiDAR: Virginia and Maryland
2012_USACE_PostSandy_MD_VA_lidar_m1437_metadata
2013-01
publication
NOAA/NMFS/EDM
49610
https://www.fisheries.noaa.gov/inport/item/49610
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View the complete metadata record on InPort for more information about this dataset.
information
https://coast.noaa.gov/dataviewer
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Online Resource
download
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TASK ORDER NAME: VIRGINIA AND MARYLAND LIDAR ACQUISITION FOR SANDY RESPONSE
CONTRACT NUMBER: W912P9-10-D-0533
TASK ORDER NUMBER: W81C8X2314841
Woolpert Project Number: 72903
HQUSACE required high-resolution digital elevation data developed from airborne LiDAR technology for the Assateague Island, MD; Assateague Island, VA; Tangier Island, VA; Cape Henry to Willoughby Point, VA; AOIs for a total of
approximately eighty (80) square miles in the North Atlantic Division.
FINAL DELIVERABLES:
The final deliverables are listed below. The final LiDAR data was delivered in a UTM projection tiling format, based on a modular layout. The tiles were clipped to eliminate overlap between adjacent tiles.
The 1000 meter x 1000 meter tile file name was derived from the National Grid naming convention.
Original contact information:
Contact Org: US Army Engineer District St. Louis
Phone: 314-331-8389
The data will be used by the USACE to generate digital elevation models and contours for use in, damage assessment to USACE projects, engineering design and design reviews, conservation planning, research, delivery,
floodplain mapping, and hydrologic modeling utilizing LiDAR technology. The task order required that the LiDAR data was to be acquired within six (6) days of receiving Notice to Proceed (NTP). The project data will
consist of high accuracy classified bare-earth LiDAR data in LAS format well as raster digital elevation models per task order requirements. The specifications are based upon the U.S. Geological Survey National Geospatial
Program Lidar Base Specifications 1.0, which may be viewed at http://pub.usgs.gov/tm/11b4/.
completed
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
pointOfContact
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
custodian
asNeeded
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1437/supplemental/2012_USACE_PostSandy_MD_VA_footprint.KMZ
This graphic shows the post Sandy LiDAR coverage for Maryland and Virginia.
kmz
Lidar - partner (no harvest)
project
InPort
otherRestrictions
Cite As: OCM Partners, [Date of Access]: 2012 USACE Post Sandy Topographic LiDAR: Virginia and Maryland [Data Date Range], https://www.fisheries.noaa.gov/inport/item/49610.
NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose.
otherRestrictions
Access Constraints: No restrictions apply to this data.
otherRestrictions
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.
otherRestrictions
Distribution Liability: Any conclusions drawn from the analysis of this information are not the responsibility
of Woolpert, USACE, USGS, NOAA, the Office for Coastal Management or its partners.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
49610
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocmp/dmp/pdf/49610.pdf
WWW:LINK-1.0-http--link
NOAA Data Management Plan (DMP)
NOAA Data Management Plan for this record on InPort.
information
crossReference
vector
eng; US
elevation
Microsoft Windows Vista Version 6.1 (Build 7600) ; TerraSolid LTD: Terrascan Version 11.01
-76.335528
-75.022929
36.862742
38.488328
| Currentness: Ground Condition
2012-11-09
| Currentness: Ground Condition
2012-11-10
| Currentness: Ground Condition
2012-11-11
A footprint of this data set may be viewed in Google Earth at:
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1437/supplemental/2012_USACE_PostSandy_MD_VA_footprint.KMZ
NOAA Office for Coastal Management
(843) 740-1202
2234 South Hobson Ave
Charleston
SC
29405-2413
coastal.info@noaa.gov
https://coast.noaa.gov
WWW:LINK-1.0-http--link
NOAA Office for Coastal Management Website
NOAA Office for Coastal Management Home Page
information
distributor
https://coast.noaa.gov/dataviewer/#/lidar/search/where:ID=1437
WWW:LINK-1.0-http--link
Customized Download
Create custom data files by choosing data area, product type, map projection, file format, datum, etc.
download
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/1437/index.html
WWW:LINK-1.0-http--link
Bulk Download
Simple download of data files.
download
dataset
Horizontal Positional Accuracy
Horizontal accuracy is +/- 0.304m at the 95% confidence level.; Quantitative Value: 0.304 meters, Test that produced the value: Units in meters. LiDAR system calibration is available upon request from Woolpert, Inc.
Vertical Positional Accuracy
The LAS data for the LiDAR Acquisition for Sandy Response Virginia and Maryland Areas of
Interest was compared to survey control points to determine the FVA of the LAS Swath and of the Bare-
Earth DEM.
LAS Swath Fundamental Vertical Accuracy (FVA) Tested 0.143m (14.3cm) fundamental
vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open
terrain using 0.073m (7.3cm) (RMSEz x 1.96000, tested against the TIN).
Bare-Earth DEM Fundamental Vertical Accuracy (FVA) Tested 0.143m (14.3cm) fundamental
vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open
terrain using 0.073m (7.3cm) (RMSEz x 1.96000, tested against the DEM).
; Quantitative Value: 0.143 meters, Test that produced the value:
Units in meters. LAS Swath Fundamental Vertical Accuracy (FVA) Tested 0.143m (14.3cm) fundamental
vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open
terrain using 0.073m (7.3cm) (RMSEz x 1.96000, tested against the TIN).
; Quantitative Value: 0.143 meters, Test that produced the value:
Units in meters. Bare-Earth DEM Fundamental Vertical Accuracy (FVA) Tested 0.143m (14.3cm) fundamental
vertical accuracy at a 95 percent confidence level, derived according to NSSDA, in open
terrain using 0.073m (7.3cm) (RMSEz x 1.96000, tested against the DEM).
Completeness Measure
Cloud Cover: 0
Completeness Report
Complete
Conceptual Consistency
The data is visually inspected by Woolpert, Inc.
Using an Optech Gemini LiDAR Sensor, 32 flight lines of high density data, at a nominal pulse spacing (NPS) of 1 meter, were collected along the Virginia coastal area separated into areas of interest: Assateague Island (Maryland),
Assateague Island (Virginia), Tangier Island (Virginia), and Cape Henry to Willoughby Point (Virginia) (approximately 80 square miles). Data Acquisition Height = 5,500 feet AGL - Aircraft Speed = 125 Knots. Multiple returns were
recorded for each laser pulse along with an intensity value for each return. A total of three (3) missions were flown during a period from November 9, 2012 through November 11, 2012. Two airborne global positioning system (GPS)
base stations were used in support of the LiDAR data acquisition. Sixteen (16) ground control points were surveyed through static methods. The geoid used to reduce satellite derived elevations to orthometric heights was Geoid12A.
Data for the task order is referenced to the UTM Zone 18N, North American Datum of 1983 (NAD83), and NAVD88, in Meters. 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 coverage was classified to extract a bare earth digital elevation
model (DEM) and separate last returns. In addition to the LAS deliverables, one layer of coverage was delivered in the ArcGrid Format: bare-earth.
2012-11-09T00:00:00
The LiDAR system calibration and system performance is verified on a periodic basis using Woolpert's calibration range. The calibration range consists of a large building and runway. The edges of the building and control points
along the runway have been located using conventional survey methods. Inertial measurement unit (IMU) misalignment angles and horizontal accuracy are calculated by comparing the position of the building edges between opposing
flight lines. The scanner scale factor and vertical accuracy is calculated through comparison of LiDAR data against control points along the runway. Field calibration is performed on all flight lines to refine the IMU
misalignment angles. IMU misalignment angles are calculated from the relative displacement of features within the overlap region of adjacent (and opposing) flight lines. The raw LiDAR data is reduced using the refined
misalignment angles.
2012-01-01T00:00:00
Once the data acquisition and GPS processing phases are complete, the LiDAR data was processed immediately to verify the coverage had no voids. The GPS and IMU data was post processed using differential and Kalman filter
algorithms to derive a best estimate of trajectory. The quality of the solution was verified to be consistent with the accuracy requirements of the project.
2012-11-12T00:00:00
The individual flight lines were inspected to ensure the systematic and residual errors have been identified and removed. Then, the flight lines were compared to adjacent flight lines for any mismatches to obtain a homogenous
coverage throughout the project area. The point cloud underwent a classification process to determine bare-earth points and non-ground points utilizing "first and only" as well as "last of many" LiDAR returns. This process
determined Default (Class 1), Ground (Class 2),Noise (Class 7), Model Key Points (Class 8), and Overlap (Class 12) classifications. The bare-earth (Class 2 - Ground) LiDAR points underwent a manual QA/QC step to verify that
artifacts have been removed from the bare-earth surface. The surveyed ground control points are used to perform the accuracy checks and statistical analysis of the LiDAR dataset.
2012-11-12T00:00:00
The NOAA Office for Coastal Management (OCM) received topographic files in LAS format. The files contained lidar
elevation and intensity measurements. The data were received in projected coordinates of NAD83 UTM18N, meters
and were vertically referenced to NAVD88 using the Geoid12a model. The vertical units of the data were
meters. OCM performed the following processing for data storage and Digital Coast provisioning purposes:
1. The topographic las files were converted from orthometric (NAVD88) heights to ellipsoidal heights using Geoid12a.
2. The topographic las files were converted from Projected Coordinates (NAD83 UTM18N, meters) to Geographic Coordinates (NAD83, decimal degrees).
2013-01-01T00:00:00