September 2004 Lidar Point Data of Southern California Coastline: Long Beach to US/Mexican Border
Dataset Identification:
Resource Abstract:
This data set contains lidar point data (Geodetic Coordinates) from a strip of Southern California coastline (including water,
beach, cliffs, and top of cliffs) from Long Beach to the US/Mexico border. The data set was created by combining data collected
using an Optech Inc. Airborne Laser Terrain Mapper (ALTM) 1225 in combination with geodetic quality Global Positioning System
(GPS) airborne and ground-based receivers. The Bureau of Economic Geology, the University of Texas at Austin owns and operates
an ALTM 1225 system (serial number 99d118). The system was installed in a twin engine Partenavia P-68 (tail number N6602L)
owned and operated by Aspen Helicopter, Inc. The lidar data set described by this document was collected on 28-30 September
2004; Julian Days 27204, 27304, and 27404 (see Lineage, Source_Information, Source_Contribution for pass information). 99d118
instrument settings for these flights were; laser pulse rate: 25kHz, scanner rate: 26Hz, scan angle: +/- 20deg, beam divergence:
narrow, altitude: 950-1150m AGL, and ground speed: 90-132kts. Settings were different on final day of surveying due to low
clouds and flight restrictions: beam divergence: wide, altitude: 320-620m AGL, and ground speed: 101-121kts. Three GPS base
stations (Seal Beach, Dana Point, and Point Loma, see Lineage, Source_Information, Source_Contribution for coordinates) were
operating during the survey. Data represented is all points including terrain, vegetation, and structures. This data also
contains returns from the water surface. No processing has been done to remove returns from terrain, vegetation, structures
or water surfaces.
Citation
Title September 2004 Lidar Point Data of Southern California Coastline: Long Beach to US/Mexican Border
publication Date
2005-04-06
presentationForm
imageDigital
cited responsible party
-
originator
organisation Name
Southern California Beach Processes Study (SCBPS)/Coastal Data Information Program (CDIP) part of Scripps Institution of Oceanography
(SIO) in cooperation with Bureau of Economic Geology, University of Texas at Austin.
cited responsible party
-
originator
organisation Name
DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration,
U.S. Department of Commerce
Contact information
Telephone
Voice 843-740-1200
Address
2234 South Hobson Ave., Charleston, SC, 29405-2413
organisation Name
Scripps Institute of Oceanography
cited responsible party
-
originator
organisation Name
Center for Space Research, University of Texas at Austin
cited responsible party
-
originator
organisation Name
Bureau of Economic Geology, University of Texas at Austin
cited responsible party
-
publisher
organisation Name
DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration,
U.S. Department of Commerce
Contact information
Telephone
Voice 843-740-1200
Address
2234 South Hobson Ave., Charleston, SC, 29405-2413
other Citation Details
Cinergi keyword enhanced.File generated at Thu Aug 24 09:54:14 UTC 2017
purpose:
The data described in this document will be compared with previous and forthcoming data sets to determine rates of shoreline
change along the Southern California coastline. The SCBPS program is designed to improve the understanding of beach sand transport
by waves and currents, thus improving local and regional coastal management.
Resource language:
eng; USA
Resource progress code:
completed
Resource Maintenance Information
maintenance or update frequency:
asNeeded
Constraints on resource usage:
Constraints
Use limitation statement:
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.
Constraints on resource usage:
Legal Constraints
Use Limitation
While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state
of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of
the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact
of distribution constitute such a warranty.
Spatial representation type code:
vector
Resource extent
Geographic Extent
Geographic Bounding Box
westBoundLongitude
-118.209205
eastBoundLongitude
-117.122305
northBoundLatitude
33.768577
southBoundLatitude
32.549177
Temporal Extent
2004-09-28
2004-09-30
Additional information on resource:
The ALTM 1225 (SN#99d118) lidar instrument has the following specifications: operating altitude = 410-2,000 m AGL; maximum
laser pulse rate = 25 kHz; laser scan angle = variable from 0 to +/-20deg from nadir; scanning frequency = variable, 28 Hz
at the 20deg scan angle; and beam divergence: narrow = 0.2 milliradian (half angle, 1/e). The ALTM 1225 does not digitize
and record the waveform of the laser reflection, but records the range and backscatter intensity of the first and last laser
reflection using a constant-fraction discriminator and two Timing Interval Meters (TIM). ALTM elevation points are computed
using three sets of data: laser ranges and their associated scan angles, platform position and orientation information, and
calibration data and mounting parameters (Wehr and Lohr, 1999). Global Positioning System (GPS) receivers in the aircraft
and on the ground provide platform positioning. The GPS receivers record pseudo-range and phase information for post-processing.
Platform orientation information comes from an Inertial Measurement Unit (IMU) containing three orthogonal accelerometers
and gyroscopes. An aided-Inertial Navigation System (INS) solution for the aircraft_??s attitude is estimated from the IMU
output and the GPS information. Wehr, A. and U. Lohr, 1999, Airborne laser scanning - an introduction and overview, ISPRS
Journal of Photogrammetry and Remote Sensing, vol. 54, no.2-3, pp.68-82.
Credits:
SCBPS/CDIP is jointly funded by the US Army Corps of Engineers and the California Department of Boating and Waterways. The
initial data are collected by Bureau of Economic Geology, The University of Texas at Austin: R. Gutierrez and T. Hepner. Center
for Space Research, The University of Texas at Austin: A. Neuenschwander. Data are further classified and processed by the
SCBPS group, located at the Scripps Institution of Oceanography.
point of contact
-
pointOfContact
individual Name Julie Thomas/Randy Bucciarelli
organisation Name
SCBPS/CDIP, Scripps Institution of Oceanography
position Name Project Managers
Contact information
Telephone
Voice 858-534-3032
Fax 858-455-5575
Address
9500 Gilman Drive, La Jolla, CA, 92093-0214
Country United States
Description Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems
and Coordinate Transformations.
source description
Source Contribution: Raw lidar data files. Raw lidar data from ALTM 1225 (all times UTC) 27204 Pass A (Oceanside to La Jolla)
= 21:59-22:11 Pass B (La Jolla to Dana Point) = 22:36-23:01 Pass C (Dana Point to Del Mar) = 23:05-23:33 Pass D (Del Mar to
Dana Point) = 23:39-23:58 Pass E (Dana Point to San Onofre) = 00:01-00:07 Calibration Passes = 22:14-22:30 27304 Pass A (Oceanside
to Mexico) = 20:52-21:17 Pass B (Mexico to Point Loma) = 21:23-21:29 Pass C (Mexico to La Jolla) = 21:36-21:52 Pass D (La
Jolla to Newport) = 22:10-22:45 Pass E (Newport to Carlsbad = 22:48-23:13 Calibration Passes = 21:55-22:07 27404 Pass A (Dana
Point to Long Beach) = 21:02-21:19 Pass B (Long Beach to Dana Point) = 21:20-21:38 Pass C (Dana Point to Long Beach) = 21:40-21:57
Pass D (Long Beach to Dana Point) = 21:58-22:10 and 22:22-22:27 Calibration Passes = 22:12-22:20 Source Type: digital file
source citation
Title Raw lidar data output from ALTM 1225
publication Date
2004-09-30
cited responsible party
-
originator
organisation Name
Bureau of Economic Geology, University of Texas at Austin
Resource extent
Temporal Extent
2004-09-28
2004-09-30
source
source description
Source Contribution: GPS data. Air and ground GPS files base station coordinates Easting, Northing, HAE in NAD83 (Latitude,
Longitude): Seal Beach (SEAL) = 399190.247, 3733584.001, -27.236 (N 33 44 15.03645, W 118 5 17.77081) Dana Point (DANA) =
434088.756, 3702981.864, 52.914 (N 33 27 51.33986, W 117 42 33.47697) Point Loma (LOMA) = 477399.618, 3614791.239, 90.892
(N 32 40 13.99715, W 117 14 27.74755) Source Type: digital file
source citation
Title Air and Ground GPS files from 27204, 27304, and 27404
publication Date
2004-09-30
cited responsible party
-
originator
organisation Name
Bureau of Economic Geology, University of Texas at Austin
Resource extent
Temporal Extent
2004-09-28
2004-09-30
AbsoluteExternalPositionalAccuracy
name Of Measure Horizontal Positional Accuracy Report
evaluation Method Description
Selected portions from each lidar data set (last return only) were used to generate a 1m x 1m digital elevation model (DEM).
Data estimated to have a horizontal accuracy of 0.01-0.03m from ground surveys using kinematic GPS techniques were superimposed
on the lidar DEM and examined for any mismatch between the horizontal position of the ground GPS and the corresponding feature
on the lidar DEM. Horizontal agreement between the ground kinematic GPS and the lidar was within the resolution of the 1m
x 1m DEM.
AbsoluteExternalPositionalAccuracy
name Of Measure Vertical Positional Accuracy Report
evaluation Method Description
The September 2004 lidar data were compared to the 1998 ATM LIDAR data to determine offsets in the vertical position. The
ATM survey points are estimated to have a vertical accuracy of +/- 15 cm. The September 2004 lidar data set was sorted to
find data points that fell within 0.5 m of an ATM LIDAR survey point along piers in the survey area. The mean elevation difference
between the September 2004 survey and the ATM survey was used to estimate and remove an elevation bias from the lidar. The
standard deviation of these elevation differences provides estimates of the lidar precision. The bias was removed so that
mean lidar elevations have a vertical accuracy of 0.10 m.
Completeness Commission
evaluation Method Description
Data were edited by an automated method to remove obvious outliers above a threshold of 150m.
organisation Name
DOC/NOAA/NOS/OCM > Office for Coastal Management, National Ocean Service, National Oceanic and Atmospheric Administration,
U.S. Department of Commerce
Contact information
Telephone
Voice 843-740-1200
Address
2234 South Hobson Ave., Charleston, SC, 29405-2413
Ordering Instructions
The National Geophysical Data Center serves as the archive for this LIDAR data. NGDC should only be contacted for this data
if it cannot be obtained from NOAA Coastal Services Center.
Distributor
distributor contact
-
distributor
individual Name Mike Sutherland
organisation Name
DOC/NOAA/NESDIS/NCEI > National Centers of Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact information
Telephone
Voice 303-497-6120
Fax 303-497-6513
Address
325 Broadway E/GC1, Boulder, CO, 80305-3328
Country USA
Ordering Instructions
The National Geophysical Data Center serves as the archive for this LIDAR dataset. NGDC should only be contacted for the data
if it cannot be obtained from NOAA Coastal Services Center.
notes: This metadata was automatically generated from the FGDC Content Standards for Digital Geospatial Metadata standard (version
FGDC-STD-001-1998) using the 2013-01-04 version of the FGDC RSE to ISO 19115-2 for LiDAR transform.
notes: Translated from FGDC 2013-05-07T15:16:53.854-06:00
notes: Last Metadata Review Date: 2011-11-19
Metadata contact
-
author
individual Name Mike Sutherland
organisation Name
DOC/NOAA/NESDIS/NCEI > National Centers of Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
Contact information
Telephone
Voice 303-497-6120
Fax 303-497-6513
Address
325 Broadway E/GC1, Boulder, CO, 80305-3328
Country USA