2007 JALBTCX Hawaii Lidar: North Coasts of Hawaii (Big Island), Kauai, Maui, Molokai,
The data contained in these files contain topographic data collected by the CHARTS
system along the northern coast of Hawaii (Big Island), Kauai, Maui, Molokai, and
Oahu in the state of Hawaii. The data were collected on the following dates: Hawaii
(Big Island): 20070123-20070210 Kauai: 20070112-20070210 Maui: 20070111-20070127 Molokai:
20070111-20070127 Oahu: 20070112-20070210 The data points representing bare earth
have been classified as such using TerraScan with results provided in the classified
las files. Classification value "1" means "Unclassified" and a value "2" means "Ground."
The data were collected and processed in geographic coordinates and ellipsoid heights.
The positions are relative to NAD83 HARN in decimal degrees of longitude and latitude.
The heights were converted from ellipsoid to geoid (NAVD88) heights using the Geoid03
model with the results in meters. These heights were then adjusted to Mean Sea Level.
The NOAA Coastal Services Center left the data in the tidal vertical datum and the
Geotiff tags were updated to reflect this datum. No vertical transforms will be performed
on this data during provisioning.
Cite this dataset when used as a source.
|Search and Download
||NOAA Coastal Services Center
Documentation links not available.
- Joint Airborne Lidar Bathymetry Technical Center of Expertise (JALBTCX)
- Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA),
National Ocean Service (NOS), Coastal Services Center (CSC)
- NOAA's Ocean Service, Coastal Services Center (CSC)
|Dataset Progress Status
|Data Update Frequency:
|| As needed
||A footprint of this data set may be viewed in Google Earth at: ftp://ftp.csc.noaa.gov/pub/crs/beachmap/qa_docs/hi/usace2007/2007_JALBTCX_Hawaii_Lidar.kmz
||The purpose of the 2007 Hawaii survey, in general, was to collect both bathymetric
and topographic lidar along the northern coastline of the Hawaiian Islands. Topographic
data were required between the zero and 15 meter contours, nominal, for the northern
coastline of the islands of Hawaii (Big Island), Kauai, Maui, Molokai, and Oahu. Bathymetric
Lidar data collection was attempted in Kaneohe Bay, Oahu, to fill-in the data gaps
between the shoreline and the previously collected SHOALS data. Bathymetric Lidar
data were collected on the island of Hawaii from Honolii Stream south along the shoreline
to the existing SHOALS data. The data were to be collected from the land water interface
seaward to a depth of 40 meters or laser extinction, whichever comes first. These
data were collected for Hawaii State Civil Defense for tsunami mapping purposes. The
manager for this project was Milton Yoshimoto (808) 438-2250.
| Use Limitations
- Any conclusions drawn from the analysis of this information are not the responsibility
of JALBTCX, the Coastal Services Center or its partners. Disclaimer 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.
||2007-01-12 to 2007-02-10
|Spatial Reference System:
|Spatial Bounding Box Coordinates:
|Spatial Coverage Map:
- United States
- Hawaii (Big Island)
| Use Constraints
- 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.
| Access Constraints
|| Fee information not available.
2007 HI Hawaii CHARTS Survey
- Description of Source: Source Contribution: LidarSource Type: hard drive
- Temporal extent used:
2007-01-12 to 2007-02-10
|| Lineage statement not available.
- NOAA Coastal Services Center
- DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department
| Processing Steps
- These data were collected using the CHARTS surveys system. It is owned by the Naval
Oceanographic Office and Operated through contract. The system collects topographic
lidar data at 20 kHz and hydrographic data at 3 kHz. The system also collects RGB
imagery at 1Hz. A CASI-1500 hyperspectral line scanner is integrated with the system
as well. Aircraft position, velocity and acceleration information are collected through
a combination of Novatel and POS A/V equipment. Raw data are collected and transferred
to the office for downloading and processing in SHOALS GCS software. GPS data are
processed using POSPac software and the results are combined with the lidar data to
produce 3-D positions for each lidar shot. These data are edited using Fledermaus
software where anomalous data are removed from the dataset. The edited data are written
to the national grid system 1 km tiles using chartsLAS, a program written by NAVO.
The data are converted from ellipsoid to orthometric heights, based on the GEOID03
model, within the chartsLAS program. The LAS files output from chartsLAS were read
into TerraScan and filters were applied to classify ground points. Points designated
as ground are assigned a classification value "2" and all other points are assigned
the classification value "1" which represents an unclassified state.
- The NOAA Coastal Services Center (CSC) received files in las format. The files contained
LiDAR intensity and elevation measurements. CSC performed the following processing
on the data for storage purposes and to make it available within Digital Coast: 1.
The data were left in the tidal vertical datum and the Geotiff tags were updated to
reflect this datum. No vertical transforms will be performed on this data during provisioning.
2. The LAS header fields were sorted by latitude and updated.
- The NOAA National Geophysical Data Center (NGDC) received Lidar data files by ftp.
The data received compressed containing LiDAR data from the NOAA Coastal Services
Center. The data are currently being served via Digital Coastl at http://www.csc.noaa.gov/digitalcoast/.
The data can be used to re-populate the system. The data are provided in LAS format.
LAS format is an industry standard for serving LiDAR data. The data are exclusively
in geographic coordinates, however, the datums used vary. Most are NAD 83, however
some are in ITRF. Vertical systems include both ellipsoid (ITRF and NAD 83) and NAVD
88. For NAVD 88 values, Geiod 03 is primarily used; however, data received in NAVD
88 prior to 2003 was processed using Geoid 99.
Metadata Last Modified: 2011-11-19
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