U.S. Geological Survey home page


Clark et. al. 2003 USGS Open File Report 03-395
Spectral Library splib05a Sample Description

(For further information on spectrsocopy, see: http://speclab.cr.usgs.gov)

TITLE: Bacterial-Mat YNP-B1 DESCRIPT

DOCUMENTATION_FORMAT: MICROORGANISM

SAMPLE_ID: YNP-B1

MICROORGANISM_TYPE: Thermophilic Hot Springs Bacterial Mat

MICROORGANISM: Thermopholic green gliding bacterium (Chloroflexus aurantiacus) and cyanobacterium (Synechococcus lividus)

LATIN_NAME: Chloroflexus aurantiacus and Synechococcus lividus

COLLECTION_LOCALITY: Octopus Spring in Yellowstone National Park, Wyoming, USA.

ORIGINAL_DONOR:

SAMPLE_DESCRIPTION:

The average reflectance spectrum of a thermophilic bacterial mat at Octopus Spring in Yellowstone National Park, Wyoming, USA. Thirty spectra of the mat were measured in the field using a field spectrometer. These spectra were averaged and convolved to the wavelength and bandpass characteristics of the Airborne Visible and InfraRed Imaging Spectrometer (AVIRIS). Channels 106-117, 150-178, and 214-221 were deleted due to artifacts caused by atmospheric water vapor and low signal-to-noise at longer wavelengths.

The bacterial mat was composed of two thermophilic species (Chloroflexus aurantiacus and Synechococcus lividus). The color of the bacterial mat was orange. This coloration is likely due to pigments in the cyanobacterium S. lividus. In addition to the overall orange coloration of the mat, streaks of green and white filaments were present.

END_SAMPLE_DESCRIPTION.

COMPOSITIONAL_ANALYSIS_TYPE: none

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

TRACE_ELEMENT_ANALYSIS: none

TRACE_ELEMENT_DISCUSSION:

END_TRACE_ELEMENT_DISCUSSION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1b2_3_4_ # 1= 0.2-3, 2= 1.5-6, 3= 6-25, 4= 20-150 microns

LIB_SPECTRA_HED: where Wave Range Av_Rs_Pwr Comment
LIB_SPECTRA: splib05a r 10773 0.3-2.5µm 200


USA.gov logo  Take Pride in America button