2010 NOAA/USGS Lidar: Kure Atoll, Northwestern Hawaiian Islands Point Cloud files with Orthometric Vertical Datum Earth Gravitational Model 2008 (EGM2008) using GEOID12B

Below are links to the files that make up the 2010 NOAA/USGS Lidar: Kure Atoll, Northwestern Hawaiian Islands dataset in an orthometric vertical datum Earth Gravitational Model 2008 (EGM2008) using GEOID12B. This HTML file is here to emulate the access you would have gotten through an ftp site. The files containing geospatial indices, metadata, etc., are listed first, followed by the files. To download in bulk, it is suggested you use a program such as wget (example below). The geospatial index file in shapefile format also has a URL attribute that some GIS programs can use to download files. You can also subset the data, make derived products, and change projection, datum, etc., using the Digital Coast Data Access Viewer (add to cart, the link to bulk download or LAZ fmt will take you here).

The data are all in geographic coordinates using the World Geodetic System of 1984 (WGS84). Vertical units are meters and all have been converted from WGS84 ellipsoid heights to orthometric Earth Gravitational Model 2008 (EGM2008) heights using EGM08.

The files are in LAZ format, a lossless compressed version of the ASPRS LAS format. The compression and decompression is done with the free and open source 'laszip' program available at http://laszip.org. This is not the same as the more general zip format. Many geospatial programs will read LAZ files natively and decompression is often not necessary. There is a list of software with native support on the laszip site.

Example to download entire data set using wget (windows version at http://gnuwin32.sourceforge.net/packages/wget.htm):
wget -np -r -nH -L --cut-dirs=2 https://coast.noaa.gov/htdata/lidar1_z/egm08/data/2642/
This will give you the directory structure starting with geoid12b. Modify the --cut-dirs=2 argument to modify the start directory (e.g. --cut-dirs=4 will start at 2642). Wget is a command-line program and the output will be to the directory you run it in. More options and information can be found at http://www.gnu.org/software/wget/manual/wget.html. The other options in the example mean:


If you have problems with wget that look like an authorization or certificate issue, you may need to add the option "--no-check-certificate".

The total size to download all the files is 65M.

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar1_z/egm08/data/2642

Georeferencing Note

You may find the georeferencing on the files refers to generic NAD83 (EPSG code 4269). All files, with the exception of the few in WGS84, are in a more recent realization of NAD83 such as NAD83(CORS96), NAD83(HARN), NAD83(NSRS2007), or NAD83(2011).

Meta Info


Tile Index: tileindex.zip
Metadata: 2010_Kure_NWHI_metadata.xml
Metadata: 2010_Kure_NWHI_metadata.html
XYZ range table: 2010_Kure_NWHI_minmax.csv
README: 0README.txt

Supplemental Info


supplemental/accuracy_assessment_nwhi.pdf
supplemental/accuracy_assessment_nwhi.pptx
supplemental/index.html
supplemental/NW_Hawaiian_Islands_Survey_Report.docx
supplemental/Northwestern_Hawaiian_Islands_Lidar_Validation_Mission.pdf
supplemental/hi2010_kure_nwhi_m2642.kmz

Breakline Files


breaklines/hi2010_kure_atoll_breaklines_m2642.zip
breaklines/index.html

Point Cloud Data Files

20100723_nwhi_kure_22_1.laz
20100723_nwhi_kure_21_1.laz
20100723_nwhi_kure_20_1.laz
20100723_nwhi_kure_19_1.laz

This page is owned by the NOAA Office for Coastal Management and was created by an automated script on Mon Nov 26 19:42:14 EST 2018