|
DOCUMENTATION_FORMAT: PLANT
SAMPLE_ID: marsh sediement at DWV3-0511
PLANT_TYPE: marsh background
PLANT: none
LATIN_NAME: none
COLLECTION_LOCALITY: Northern Barataria Bay, approximately 58 km south-southeast of New Orleans, Louisiana
COLLECTION_LATITUDE: 29.447981 deg. N
COLLECTION_LONGITUDE: 89.922859 deg. W
DATUM: NAD83
ORIGINAL_DONOR: Raymond F. Kokaly, USGS
SAMPLE_DESCRIPTION:
This spectrum is the average reflectance of 10 field measurements of dry sediment on the surface of the marsh. Litter from adjacent vegetation was removed prior to measurement.
The vegetation cover around the bare surface consisted of black needlerush (Juncus roemerianus) and smooth cordgrass (Spartina alterniflora).
The measurements were made on May 11, 2011.
These spectra were made using an ASD Field Spectrometer 3 (FS3) in reflectance mode, relative to a Spectralon reference panel.
During the recording of the spectra, the fiber optic was held approximately 15 cm above the ground and moved around to different areas of exposed marsh sediment.
An average spectrum was computed from the recorded measurements.
The average spectrum was converted to absolute reflectance by multiplying by the reflectance spectrum of the Spectralon reference panel.
Project Background
This site was measured as part of joint work between the USGS Denver Spectroscopy Laboratory and the
Coastal Restoration Assessment Branch of the USGS National Wetlands Research Center, Baton Rouge.
This spectrum was used in the following publication:
Kokaly, R.F., Couvillion, B.R., Holloway, J.M., Roberts, D.A., Ustin, S.L., Peterson, S.H., Khanna, S., and Piazza, S.C., 2013,
Spectroscopic remote sensing of the distribution and persistence of oil from the Deepwater Horizon spill in Barataria Bay marshes,
Remote Sensing of Environment, Volume 129, Pages 210-230. http://dx.doi.org/10.1016/j.rse.2012.10.028
IMAGE_OF_SAMPLE:
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