ISO Table View
Alternate Views:
Get Data,
FAQ,
ISO Rubric,
CSW,
HTML,
Components, XML
Metadata Identifier: gov.noaa.csc.maps:me2006_fema_cumberlandyork_m2479
MD_DataIdentification
| 1 |
|
2006 Federal Emergency Management Agency (FEMA) Topographic LiDAR: Cumberland
and York Counties, Maine
|
In the fall of 2006, Sanborn Map Company was contracted by Camp Dresser McKee,
Inc (CDM) to execute a LiDAR (Light Detection and Ranging) survey campaign in the
state of Maine. LiDAR data in the form of 3-dimensional positions of a dense set of
masspoints was collected for the 584 sqaure miles of Cumberland and York Counties.
This data was used in the development of the bare-earth-classified elevation point
data sets. The Leica ALS-50 LiDAR system was used to collect data for the whole survey
campaign. The LiDAR system is calibrated by conducting flight passes over a known
ground surface before and after each LiDAR mission. During final data processing,
the calibration parameters are inserted into post-processing software. Six airborne
GPS (Global Positioning System) base stations were used in this project. A new point
was set at the Portland Airport (501) The other base stations were set up at National
Geodetic Survey (NGS) markers. NGS Monuments 901- PID: OC0229 and 801 - PID: OC0230
are located at the Biddeford Airport. The other existing NGS monuments used in the
network are point 701 - PID: AJ2697, located on Bailey Island, point 702 - PID: OC0429,
located at Fort Constitution, and point 703 - PID: OC0478 located southeast of York
Beach were tied to the other three points to create a GPS survey network. The coordinates
of these stations were checked against each other with the three dimensional GPS baseline
created at the airborne support set up and determined to be within project specifications.
Leica ALS-50 LiDAR Scanner Parameters: Pulse Rate: 50,000 hertz Scan Frequency: 36
hertz Scan Width (Half Angle): 18 degrees Flying Height: 1,200 meters above ground
level Flying Speed: ~120 knots
|
SV_Identification
| 1 |
|
2006 Federal Emergency Management Agency (FEMA) Topographic LiDAR: Cumberland and
York Counties, Maine
|
|
|
| 1 |
|
None |
|
|
| 1 |
|
North American Datum 1983 |
|
|
| 1 |
|
none |
|
|
| 1 |
|
|
|
|
|
resourceProvider |
http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
| 1 |
|
|
DHS/FEMA > Federal Emergency Management Agency, U.S. Department of Homeland Security |
|
|
originator |
|
| 1 |
NOAA CSC (originator) |
|
DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
|
|
csc.info@noaa.gov |
originator |
|
| 1 |
NOAA CSC (publisher) |
|
DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
|
|
csc.info@noaa.gov |
publisher |
|
| 1 |
NOAA CSC(distributor) |
|
DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
|
|
csc.info@noaa.gov |
distributor |
|
| 1 |
NOAA CSC (processor) |
|
DOC/NOAA/NOS/CSC > Coastal Services Center, National Ocean Service, National Oceanic
and Atmospheric Administration, U.S. Department of Commerce
|
|
csc.info@noaa.gov |
processor |
|
| 1 |
EPSG Registry |
|
European Petroleum Survey Group |
|
|
publisher |
http://www.epsg-registry.org/ |
| 1 |
|
|
Federal Emergency Management Agency, Region I |
Flood Insurance and Mitigation Division |
|
pointOfContact |
|
| 1 |
Mike Sutherland(author) |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
|
|
mike.sutherland@noaa.gov |
author |
|
| 1 |
Mike Sutherland |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
|
|
mike.sutherland@noaa.gov |
distributor |
|
| 1 |
Mike Sutherland (processor) |
Mike Sutherland |
DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
of Commerce
|
|
mike.sutherland@noaa.gov |
processor |
|
| 1 |
|
http://www.epsg-registry.org/ |
European Petroleum Survey Group Geodetic Parameter Registry |
Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured
dataset of Coordinate Reference Systems and Coordinate Transformations.
|
search |
| 1 |
|
http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269 |
NAD83 |
Link to Geographic Markup Language (GML) description of reference system. |
information |
| 1 |
|
Ellipsoid in Meters |
| 1 |
|
urn:ogc:def:crs:EPSG::4269 |
|
Bounding Box |
Temporal Extent |
| 1 |
|
|
-70.842773 |
-69.842006 |
43.980053 |
43.052971 |
2006-10-07 |
2006-10-27 |
| 1 |
|
-70.842773 |
-69.842006 |
43.980053 |
43.052971 |
| 1 |
Lidar Use Limitation |
These data depict the elevations at the time of the survey and are only
accurate for that time. 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. Any conclusions
drawn from analysis of this information are not the responsibility of NOAA
or any of its partners. These data are NOT to be used for navigational purposes.
|
| 1 |
Ellipsoid |
Ellipsoid in Meters |
|
| 1 |
NAD83 |
urn:ogc:def:crs:EPSG::4269 |
North American Datum 1983 |
| 1 |
|
2007-02-13T00:00:00 |
Using the Leica ALS-50 Light Detection and Ranging (LiDAR) system,
flight lines were planned for standard density 1.4 meter GSD. The Flight plan for
the project includes the following specifications to fully meet the project requirements
- single pass density of approximately 1.4 square meters per sample * Swath width
~688 meters * Flight altitude 1200 meters * flight line spacing ~516 meters with ~125
meters overlap *Scan Frequency- 36 Hz *Scan Angle- 16 degrees * Aircraft ground speed
-- 120 knots * System Calibration pre and post mission * Two GPS base stations within
30 KM. Multiple returns were recorded for each laser pulse along with an intensity
value for each return. The data are calibrated for geographic referencing. Points
are further processed, using TerraSolid software, to classify return values. The first
and last return data is filtered to remove the vegetation and above ground manmade
features to yield a ground surface.
|
| 1 |
|
2013-04-01T00:00:00 |
The NOAA Coastal Services Center (CSC) received topographic files
in LAS format. The files contained lidar elevation and intensity measurements. The
data were received in UTM Zone 19N (NAD83) coordinates and were vertically referenced
to NAVD88 using the Geoid03 model. The vertical units of the data were meters. CSC
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 Geoid03. 2. The topographic las files were converted
from a Projected Coordinate System (UTm 19N) to a Geographic Coordinate system (GCS).
3. The topographic las files' horizontal units were converted from meters to decimal
degrees. 4. The data were converted to LAZ format.
|
| 1 |
|
2013-05-17T00:00:00 |
The NOAA National Geophysical Data Center (NGDC) received lidar data
files via ftp transfer from the NOAA Coastal Services Center. The data are currently
being served via NOAA CSC Digital Coast at http://www.csc.noaa.gov/digitalcoast/.
The data can be used to re-populate the system. The data are archived in LAS or LAZ
format. The LAS format is an industry standard for LiDAR
data developed by the American Society of Photogrammetry and Remote Sensing (ASPRS);
LAZ is a loseless compressed version of LAS developed by
Martin Isenburg (http://www.laszip.org/). The data are exclusively in geographic coordinates
(either NAD83 or ITRF94). The data are referenced vertically to
the ellipsoid (either GRS80 or ITRF94), allowing for the ability to apply the most
up to date geoid model when transforming to orthometric heights.
|
|
