2010 ARRA Lidar: Eklutna Glacier (AK) Point Cloud files with Orthometric Vertical Datum North American Vertical Datum of 1988 (NAVD88) using GEOID12B

Below are links to the files that make up the 2010 ARRA Lidar: Eklutna Glacier (AK) dataset in an orthometric vertical datum North American Vertical Datum of 1988 (NAVD88) 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 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 (note: sufficiently new and trusted pre-compiled Windows versions can be hard to find):
wget -np -r -nH -L --cut-dirs=2 https://chs.coast.noaa.gov/htdata/lidar1_z/geoid12b/data/4798/
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 4798). 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". Windows users may want to install the Windows Subsystem for Linux to get a current wget.

You can also use the uGet program with the list of URLs in file urllist4798.txt. Several posts on the GeoZone blog provide help with downloading, including:

The total size to download all the files is 637M.

If you need FTP access instead of HTTPS, use ftp://ftp.coast.noaa.gov/pub/DigitalCoast/lidar1_z/geoid12b/data/4798

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 (Shapefile)
                ak2010_arra_eklutna_index.gpkg (GeoPackage)
Metadata: ak2010_arra_eklutna_metadata.xml
Metadata: ak2010_arra_eklutna_metadata.html
XYZ range table: ak2010_arra_eklutna_minmax.csv
README: 0README.txt (contains similar information to above)
URL List: urllist4798.txt is a list of all the URLs for batch downloading.

Supplemental Info

supplemental/ak2010_ARRA_Eklutna_m4798.kmz
supplemental/ak2010_ARRA_Eklutna_m4798_surveyreport.pdf
supplemental/index.html

Breakline Files

breaklines/README_breaklines_m4798.txt
breaklines/ak_DGGS_eklutna_m4798_breaklines.zip

Point Clouds

20101023_arra_ak_ekluntaglacier_2010_000060.laz
20101023_arra_ak_ekluntaglacier_2010_000020.laz
20101023_arra_ak_ekluntaglacier_2010_000040.laz
20101023_arra_ak_ekluntaglacier_2010_000019.laz
20101023_arra_ak_ekluntaglacier_2010_000059.laz
20101023_arra_ak_ekluntaglacier_2010_000018.laz
20101023_arra_ak_ekluntaglacier_2010_000039.laz
20101023_arra_ak_ekluntaglacier_2010_000058.laz
20101023_arra_ak_ekluntaglacier_2010_000017.laz
20101023_arra_ak_ekluntaglacier_2010_000038.laz
20101023_arra_ak_ekluntaglacier_2010_000057.laz
20101023_arra_ak_ekluntaglacier_2010_000016.laz
20101023_arra_ak_ekluntaglacier_2010_000015.laz
20101023_arra_ak_ekluntaglacier_2010_000037.laz
20101023_arra_ak_ekluntaglacier_2010_000056.laz
20101023_arra_ak_ekluntaglacier_2010_000014.laz
20101023_arra_ak_ekluntaglacier_2010_000013.laz
20101023_arra_ak_ekluntaglacier_2010_000012.laz
20101023_arra_ak_ekluntaglacier_2010_000011.laz
20101023_arra_ak_ekluntaglacier_2010_000036.laz
20101023_arra_ak_ekluntaglacier_2010_000055.laz
20101023_arra_ak_ekluntaglacier_2010_000010.laz
20101023_arra_ak_ekluntaglacier_2010_000035.laz
20101023_arra_ak_ekluntaglacier_2010_000054.laz
20101023_arra_ak_ekluntaglacier_2010_000009.laz
20101023_arra_ak_ekluntaglacier_2010_000034.laz
20101023_arra_ak_ekluntaglacier_2010_000053.laz
20101023_arra_ak_ekluntaglacier_2010_000008.laz
20101023_arra_ak_ekluntaglacier_2010_000052.laz
20101023_arra_ak_ekluntaglacier_2010_000051.laz
20101023_arra_ak_ekluntaglacier_2010_000033.laz
20101023_arra_ak_ekluntaglacier_2010_000032.laz
20101023_arra_ak_ekluntaglacier_2010_000007.laz
20101023_arra_ak_ekluntaglacier_2010_000050.laz
20101023_arra_ak_ekluntaglacier_2010_000006.laz
20101023_arra_ak_ekluntaglacier_2010_000031.laz
20101023_arra_ak_ekluntaglacier_2010_000049.laz
20101023_arra_ak_ekluntaglacier_2010_000048.laz
20101023_arra_ak_ekluntaglacier_2010_000030.laz
20101023_arra_ak_ekluntaglacier_2010_000005.laz
20101023_arra_ak_ekluntaglacier_2010_000047.laz
20101023_arra_ak_ekluntaglacier_2010_000029.laz
20101023_arra_ak_ekluntaglacier_2010_000046.laz
20101023_arra_ak_ekluntaglacier_2010_000004.laz
20101023_arra_ak_ekluntaglacier_2010_000045.laz
20101023_arra_ak_ekluntaglacier_2010_000028.laz
20101023_arra_ak_ekluntaglacier_2010_000003.laz
20101023_arra_ak_ekluntaglacier_2010_000027.laz
20101023_arra_ak_ekluntaglacier_2010_000044.laz
20101023_arra_ak_ekluntaglacier_2010_000043.laz
20101023_arra_ak_ekluntaglacier_2010_000042.laz
20101023_arra_ak_ekluntaglacier_2010_000041.laz
20101023_arra_ak_ekluntaglacier_2010_000002.laz
20101023_arra_ak_ekluntaglacier_2010_000026.laz
20101023_arra_ak_ekluntaglacier_2010_000001.laz
20101023_arra_ak_ekluntaglacier_2010_000025.laz
20101023_arra_ak_ekluntaglacier_2010_000024.laz
20101023_arra_ak_ekluntaglacier_2010_000023.laz
20101023_arra_ak_ekluntaglacier_2010_000022.laz
20101023_arra_ak_ekluntaglacier_2010_000021.laz

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