U.S. Geological Survey home page


Clark and others 2007 USGS Data Series 231
Spectral Library splib06a Sample Description

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

TITLE: Aspen Aspen-3 YellowGreenTop DESCRIPT

DOCUMENTATION_FORMAT: PLANT

SAMPLE_ID: Aspen-3

PLANT_TYPE: Deciduous Tree

PLANT: Quaking Aspen

LATIN_NAME: Populus tremuloides

COLLECTION_LOCALITY: Boulder, Colorado

ORIGINAL_DONOR:

SAMPLE_DESCRIPTION:

Reflectance measurements of the top surface of a yellow-green leaf (the leaf was mostly yellow but with occasional green spots) from a quaking aspen (Populus tremuloides) tree. The single leaf was measured on a black (nearly 0% reflectance) background. The leaf was cut from a tree and stored in a plastic bag two hours prior to measurement. The spectrometer head (bare fiber optic) was held approximately 3 cm from the leaf surface and moved around the area of the leaf as spectra were recorded. This average reflectance was computed from 12 recorded spectra.

END_SAMPLE_DESCRIPTION.

COMPOSITIONAL_ANALYSIS_TYPE: none

COMPOSITION_DISCUSSION:

END_COMPOSITION_DISCUSSION.

TRACE_ELEMENT_ANALYSIS:

TRACE_ELEMENT_DISCUSSION:

END_TRACE_ELEMENT_DISCUSSION.

SPECTROSCOPIC_DISCUSSION:

END_SPECTROSCOPIC_DISCUSSION.

SPECTRAL_PURITY: 1a2_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 10700 0.3-2.5µm 200
LIB_SPECTRA: splib06a r 29612 g.s.=