USGS Digital Spectral Library 06

http://speclab.cr.usgs.gov/spectral.lib06

Researchers at the Spectroscopy Lab have measured the spectral reflectance of hundreds of materials in the lab, and have compiled a spectral library. The library is used as a reference for material identification in remote sensing images. This web page provides links to the splib06* series of spectral library data and supporting information.

The following links to the official Data Series 231 report and includes the description of how spectra were measured, sample purity, full sample descriptions, plots of the spectra, and ASCII listings of all data.

Clark, R.N., Swayze, G.A., Wise, R., Livo, E., Hoefen, T., Kokaly, R., Sutley, S.J., 2007, USGS digital spectral library splib06a: U.S. Geological Survey, Digital Data Series 231.

The software used to analyze the laboratory data and manage the spectral library is Specpr

You can download the spectral library in any of the following formats:

Original Laboratory Data:

• splib06a - ftp Compressed Binary (25 MBytes) (all spectra and original descriptions)
  • Specpr Format

• splib06a - ftp Compressed ASCII (48 MBytes) (all spectra and original descriptions)

• Spectral Library SAMPLE DESCRIPTIONS

• ftp Compressed tar file of ASCII format (21 MBytes) (all spectral data and original descriptions).

• Original Descriptions only - ftp tar file of sample descriptions (291 MBytes, does not compress).

• Original Descriptions only - ftp tar file of spectral plots (29 MBytes, does not compress).

• ftp directory of individual ASCII files of original spectral data and sample descriptions.

• ftp directory containing all Spectral libraries as ASCII files (All original and convolved libraries; for specific libraries it might be easier to select from the table below).

• ftp directory of individual sample description files

• ftp directory of individual spectral plot files (gif images of plots)

Interpolated Laboratory Data: (It is suggested that if you are going to convolve the spectral library to your own systems, use this version. This is the version we use for convolutions. The higher sampling helps when doing numerical integrations, so it could be used for all applications.

• ftp directory where splib06b can be found.

Along with the main library, splib06a, at the original instrument resolution, there are versions for specific flight instruments flying throughout the solar system such as the NASA/JPL Airborne Visual and Infra-Red Imaging Spectrometer (AVIRIS), Cassini VIMS, and more.

• ftp directory where Convolved Spectral Libraries can be found.

U.S. Geological Survey, a bureau of the U.S. Department of the Interior

This page URL= http://speclab.cr.usgs.gov/spectral.lib06
This page is maintained by: Dr. Roger N. Clark rclark@usgs.gov

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Last modified April 26, 2008.