gov.noaa.nmfs.inport:48192
eng
UTF8
dataset
Office for Coastal Management
resourceProvider
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
2024-02-29T00:00:00
ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data
ISO 19115-2:2009(E)
2004 Maine Coastline LiDAR
me2004_m17_metadata
2006-10-19
publication
NOAA/NMFS/EDM
48192
https://www.fisheries.noaa.gov/inport/item/48192
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Full Metadata Record
View the complete metadata record on InPort for more information about this dataset.
information
https://coast.noaa.gov
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Citation URL
Online Resource
download
https://coast.noaa.gov/dataviewer
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Citation URL
Online Resource
download
This metadata document describes the collection and processing of Light Detection and Ranging (LIDAR) data over an area
along the coast of Maine. Data was collected at a nominal two (2) meter post spacing between points. Two elevation data sets
were compiled in this project, first surface returns, in which features that are above the ground, such as buildings, bridges,
tree tops, etc. have not been eliminated and a Bare Earth Data set.
Original contact information:
Contact Org: NOAA Office for Coastal Management
Phone: 843-740-1202
Email: coastal.info@noaa.gov
This LIDAR has been supplied to the NOAA, Office for Coastal Management (OCM) to support local Coastal Zone Managers in their
decision-making processes.
EarthData International of Maryland, LLC 7320 Executive Way Frederick, MD 21704 1-301-948-8550 1-301-963-2064
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
notPlanned
EARTH SCIENCE > LAND SURFACE > TOPOGRAPHY > TERRAIN ELEVATION > TOPOGRAPHICAL RELIEF MAPS
EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > SEAFLOOR TOPOGRAPHY
EARTH SCIENCE > OCEANS > COASTAL PROCESSES > COASTAL ELEVATION
theme
Global Change Master Directory (GCMD) Science Keywords
17.0
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > MAINE
place
Global Change Master Directory (GCMD) Location Keywords
17.0
Beach
Erosion
theme
DOC/NOAA/NOS/OCM > Office of Coastal Management, National Ocean Service, NOAA, U.S. Department of Commerce
dataCentre
Global Change Master Directory (GCMD) Data Center Keywords
2017-04-24
publication
8.5
Lidar
project
InPort
otherRestrictions
Cite As: Office for Coastal Management, [Date of Access]: 2004 Maine Coastline LiDAR [Data Date Range], https://www.fisheries.noaa.gov/inport/item/48192.
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: None
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.
otherRestrictions
Distribution Liability: Any conclusions drawn from analysis of this information are not the responsibility of NOAA, the Office for Coastal Management or its partners.
unclassified
NOAA Data Management Plan (DMP)
NOAA/NMFS/EDM
48192
https://www.fisheries.noaa.gov/inportserve/waf/noaa/nos/ocm/dmp/pdf/48192.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
-70.692195
-69.716843
43.065356
43.80005
| Currentness: Ground Condition
2004-05-05
2004-05-06
The 2004 Southern Maine Lidar Data Validation Report may be viewed at:
https://noaa-nos-coastal-lidar-pds.s3.amazonaws.com/laz/geoid18/17/supplemental/index.html
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=17
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/geoid18/17/index.html
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Bulk Download
Simple download of data files.
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dataset
Horizontal Positional Accuracy
The horizontal accuracy of this lidar data was not assessed. The high vertical accuracy
is indicative of good horizontal accuracy, though slight horizontal inaccuracies are difficult to detect using these check
points because they were located in relatively flat terrain.
Vertical Positional Accuracy
Thirty check points collected on generally flat open terrain were compared to the lidar points.
The Guidelines for Digital Elevation Data by NDEP recommends interpolation from a surface generated from a triangulated irregular
network (TIN) derived from the lidar point data surrounding the check point for assessing the accuracy of mass points. This
method was employed in this evaluation. Elevation values at the location of each of the 30 check points were interpolated from
the triangulated bare earth point data. The vertical error at each check point location was calculated by subtracting the
interpolated lidar elevation value from the check point elevation value.
; Quantitative Value: 0.20 meters, Test that produced the value:
Tested 0.20 meter fundamental vertical accuracy at 95 percentile confidence level
in open terrain using RMSE x 1.96.
Completeness Measure
Cloud Cover: 0
Completeness Report
None available.
Conceptual Consistency
The data were evaluated to ensure no voids exist and the data covers the entire project area.
EarthData has developed a unique method for processing LIDAR data. The algorithms for filtering data were
utilized within EarthData's proprietary software and commercial software written by TerraSolid. This software suite of tools
provides efficient processing for small to large-scale projects and has been incorporated into ISO 9001 compliant production
work flows. POINT CLOUD The following is a step-by-step breakdown of the process utilized to produce the variably-spaced point
cloud surface data set.
1. Processing of the LIDAR data begins with refinement of the initial boresight alignment parameters provided by EarthData
Aviation in the LITES configuration file delivered with the raw data. The technician also verifies that there are no voids,
and that the data covers the entire project area. Calibration is accomplished using the tri-directional flight lines over
the project airport, which is generally flat and free of major obstructions, trees or brush. Two overlapping bi-directional
lines are flown along the length of the runway, and the cross flight line is perpendicular to both. All three lines are examined
to ensure that they agree, within expected system tolerances, in the overlapping areas. The technician will review flight lines
and locate the areas that contained systematic errors or distortions that were introduced by the LIDAR sensor.
2. Systematic distortions highlighted in step 1 were removed and the data was re-inspected. Corrections and adjustments can
involve the application of angular deflection or compensation for curvature of the ground surface that can be introduced by
crossing from on type of land cover to another.
3. All flight lines are processed with the refined calibration parameters obtained thru steps 1 and 2. All flight line are
examined to ensure that they agree, within expected system tolerances, in the overlapping areas (side lap).
4. The LIDAR data for each flight line was trimmed in batch for the removal of the overlap areas between flight lines.
The data was checked against a control network to ensure that vertical requirements were maintained. Conversion to the
client-specified datum and projections were then completed. The LIDAR flight line data sets were then segmented into adjoining
tiles for batch processing and data management.
5. The data was then edited for Blunder removal.
6. The data was processed interactively by the operator using LIDAR editing tools. During this final phase the operator generated
a TIN based on a desired thematic layer to evaluate the automated classification performed in step 5. This allowed the operator
to quickly re-classify points from one layer to another and recreate the TIN surface to see the effects of edits. The use of
geo-referenced images was toggled on or off to aid the operator in identifying problem areas. The data was also examined with an
automated profiling tool to aid the operator in the reclassification.
7. Orthometric heights were converted using the Geoid 03 undulation model.
8. The data was separated into (1) variably-spaced point cloud in LAS files. The files were written to PC readable CD-ROM.
2004-09-12T00:00:00
The NOAA Office for Coastal Management (OCM) received files in LAS format. The files contained lidar intensity
and elevation measurements. OCM performed the following processing on the data to make it available within the Lidar Data
Retrieval Tool (LDART):
1. The data were projected from UTM to geographic decimal degrees using the General Cartographic Transformation Package.
2. The las files were sorted by latitude and the las header fields were completed.
2005-01-05T00:00:00
For data management purposes, the Office for Coastal Management converted the data from NAVD88 elevations to
ellipsoid elevations using Geoid 03.
2008-01-01T00:00:00
Source Contribution: The project area was flown using EarthData Aviation's Piper Navajo aircraft with tail number 62912. LIDAR
data was captured using an ALS40 LIDAR system, including an inertial measuring unit (IMU) and a dual frequency GPS receiver.
The acquisition was flown during the period of May 5, 2004 through May 6 2004. One ground based GPS receiver was in constant
operation during each flight. During the data acquisition, all receivers collected phase data at an epoch rate of 1 Hz. All
GPS phase data was post processed with continuous kinematic survey techniques using "On the Fly" (OTF) integer ambiguity
resolution. The GPS data was processed with forward and reverse processing algorithms. The results from each process, using
the data collected at the airport, were combined to yield a single fixed integer phase differential solution of the aircraft
trajectory.
| Source Geospatial Form: Model | Type of Source Media: CD-ROM
Coastal Maine LIDAR Scanning Project
2004-09-12
publication
2004-05-05
2004-05-06
Source Contribution: Ten (10) ground control points were established by Terrasurv, Inc. using GPS for vertical and horizontal
coordinate values. Ground control references NAD83, NAVD88, Geoid99, in meters. An additional thirty (30) independent check
ground control points were acquired by Terrasurv, Inc. and provided directly to NOAA, OCM to support an independent analysis of
the accuracy of the Lidar data.
| Source Geospatial Form: Model | Type of Source Media: Electronic mail system
Ground Control Survey of Coastal Maine
2004-09-12
publication
2004-06-16
2004-06-18