Dataset Identification:
- There was no metadata record provided along with this data set. Much of the information in this record, has been gleaned from the metadata record for a data set from this same project, for data collected in March of 2006. The minimal amount of known information that is specific to this data set has been included in this record where possible. This lidar point data set was collected during low tide conditions along an approximately 500-700 meter wide strip of the Southern California coastline within an area extending south from Long Beach to the US/Mexico border. Data were collected in Los Angeles, Orange and San Diego counties in October 2006. Data set features include water, beach, cliffs, and top of cliffs. The all points data set contains the complete point cloud of first and last return elevation and laser intensity measurements recorded during the fall 2006 airborne lidar survey conducted semi-annually by the University of Texas at Austin for the Southern California Beach Processes Study. 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. The data set was generated by the processing of laser range, scan angle, and aircraft attitude 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 system was installed in a twin engine Partenavia P-68 (tail number N3832K) owned and operated by Aspen Helicopter, Inc. The lidar data set described by this document was collected in October of 2006. The 99d118 instrument settings for these flights were: laser pulse rate: 25 kHz scanner rate: 26 Hz, scan angle: +/- 20 deg beam divergence: narrow altitude: 300-600m AGL ground speed: 95-120kts
- Title October 2006 Scripps Institute of Oceanography (SIO) Lidar of Southern California Coastline: Long Beach to US/Mexico Border
- publication Date 2011-01-01
- 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.
- 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
- electronic Mail Address coastal.info@noaa.gov
- organisation Name Scripps Institute of Oceanography
- organisation Name Center for Space Research, University of Texas at Austin
- organisation Name Bureau of Economic Geology, University of Texas at Austin
- 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
- electronic Mail Address coastal.info@noaa.gov
Theme keywords (theme):
Bathymetry/Topography
shoreline
beach
lidar
laser
point file
Latitude
Longitude
intensity
- Title none
Location keywords:
US
California
Los Angeles County
Orange County
San Diego County
San Diego
Pacific Ocean
Huntington Beach
Point La Jolla
- Title none
Temporal keywords:
2006
October
- Title none
Theme keywords (theme):
- Title Activity > Observation
- publication Date 2017-08-24
Theme keywords (theme):
- Title Resource Type > Document
- publication Date 2017-08-24
Theme keywords (theme):
- Title Material > Environmental Material
- publication Date 2017-08-24
Theme keywords (theme):
- Title Property > Measure
- publication Date 2017-08-24
Theme keywords (theme):
- Title Science Domain > Earth Science
- publication Date 2017-08-24
Theme keywords (theme):
- Title Equipment > Instrument
- publication Date 2017-08-24
Theme keywords (theme):
- Title Equipment > platform
- publication Date 2017-08-24
Theme keywords (theme):
- Title Material > Biological Material
- publication Date 2017-08-24
Theme keywords (theme):
- Title Feature > Marine Feature
- publication Date 2017-08-24
Theme keywords (theme):
- Title Resource Type > Data Set
- publication Date 2017-08-24
Theme keywords (theme):
- Title Virtual International Authority File (VIAF) Corporate Names
- publication Date 2017-08-24
Theme keywords (theme):
purpose:
Browse image (thumbnail):
- maintenance or update frequency: asNeeded
- 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.
- 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.
Resource extent
-
- westBoundLongitude -118.000240
- eastBoundLongitude -117.246803
- northBoundLatitude 33.658808
- southBoundLatitude 32.824379
Geographic Bounding Box - Temporal Extent
Geographic Extent
2006-10-01
- There was no metadata record provided along with this data set. Much of the information in this record, has been gleaned from the metadata record for a data set from this same project, for data collected in March of 2006. The minimal known information that is specific to this data set has been included in this record where possible. 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.
- 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.
- 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
- Also available at www.cdip.ucsd.edu
Vector spatial representation information
-
- Geometric Objects
-
- geometric Object Type point
reference system 1
- Reference System Identifier
- Identifier string: urn:ogc:def:crs:EPSG::4269
- authority
-
- Title North American Datum 1983
- alternateTitle NAD83
- revision Date 2007-01-19
- cited responsible party - resourceProvider
-
- organisation Name
- Contact information
-
- Linkage for online resource
-
- name NAD83
- URL: http://www.epsg-registry.org/export.htm?gml=urn:ogc:def:crs:EPSG::4269
- link function information
- Description Link to Geographic Markup Language (GML) description of reference system.
- cited responsible party - publisher
-
- organisation Name European Petroleum Survey Group
- Contact information
-
- Linkage for online resource
-
- name European Petroleum Survey Group Geodetic Parameter Registry
- URL: http://www.epsg-registry.org/
- link function search
- Description Registry that accesses the EPSG Geodetic Parameter Dataset, which is a structured dataset of Coordinate Reference Systems and Coordinate Transformations.
reference system 2
- Reference System Identifier
- Identifier string: Ellipsoid in Meters
- Identifier code space: Local Vertical Reference
Data quality information
Scope of quality information
- name Of Measure Horizontal Positional Accuracy Report
- evaluation Method Description There was no metadata record provided along with this data set, therefore the horizontal accuracy information is unknown. However, to provide some idea of the horizontal accuracy for a comparable data set, the horizontal accuracy information provided below, was gleaned from the metadata record for this same project, for data collected in March of 2006. The lidar data is estimated to have a horizontal error of less than or equal to 0.50 m from comparison between kinematic GPS road survey and a 1m resolution grey-scale image generated from the lidar backscatter intensity data. Kinematic GPS data were superimposed on the lidar backscatter image and examined for any mismatch between the horizontal position of the ground GPS and the corresponding features on the lidar image. Horizontal agreement between the ground kinematic GPS and the lidar was within the resolution of the 1m -resolution backscatter image.
- name Of Measure Vertical Positional Accuracy Report
- evaluation Method Description There was no metadata record provided along with this data set, therefore the vertical accuracy information is unknown. However, to provide some idea of the vertical accuracy for a comparable data set, the vertical accuracy information provided below, was gleaned from the metadata record for this same project, for data collected in March of 2006. The March 2006 lidar data were compared to the 1998 ATM LIDAR data to determine offsets in the vertical position. The ATM survey points were estimated to have a vertical accuracy of +/- 15 cm. The March 2006 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 elevation differences between the March 2006 survey and the ATM survey were used to estimate and remove TIM1 and TIM2 elevation biases from each lidar flight. The standard deviation of these elevation differences provided estimates of the lidar precision. After bias adjustment the mean lidar elevations had a vertical accuracy of 0.10 m.
- evaluation Method Description Data were edited by an automated method to remove obvious outliers above a threshold of 150m.
- measure Description Not Applicable
Resource distribution information
Distributor
- 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
- electronic Mail Address coastal.info@noaa.gov
- 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
- 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
- electronic Mail Address mike.sutherland@noaa.gov
- 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.
- Format name LAZ
- Format version
- date of next update: 2014-06-11
- maintenance or update frequency: annually
- 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 2013-06-11T09:44:00.048-06:00
- notes: Last Metadata Review Date: 2011-11-19
- 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
- electronic Mail Address mike.sutherland@noaa.gov