Visible and near infrared reflectance spectrum of mixed halite and gypsum (Laguna Tuyajto, Chile)
- Title
- Visible and near infrared reflectance spectrum of mixed halite and gypsum (Laguna Tuyajto, Chile)
- DOI
- 10.26302/SSHADE/EXPERIMENT_JF_20201104_001
- Data reference
- Flahaut, Jessica; Martinot, Mélissa (2015): Visible near infrared spectra of salt crusts in Andean Salars, Chile. SSHADE/Mirabelle (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_JF_20201104_001
- Publications
- Database
- Experimentalists
- Experiment type
- field measurement
- Type
- reflectance factor
- Intensity unit
- no unit
- Standard medium
- unknown
- Observation mode
- spectrum
- Spectral range type(s)
- Vis, NIR
- Valid spectral range(s)
-
Min - Max ($nm$) Sampling ($nm$) Resolution ($nm$) Position accuracy ($nm$) Absorption edge #1 415.0 - 1000.0 1.0 3.0 0.5 #2 1001.0 - 2500.0 1.0 10.0 0.5 - Comments
- Measurements were made between 350nm and 2500nm with a spectral sampling of 1.4 nm @ 350-1 000 nm and 1.1 nm @ 1 001-2 500 nm. data were then automatically interpolated and resampled with a 1nm interval during export by the fieldspec software
Definition: incidence and emergence angles are positive with origin at nadir, and vary in same direction. Azimuth origin (increasing clockwise) is for i = e (opposition geometry).
- Observation geometry
- bidirectional
- Observation mode
- fixed angles
- Resolution illumination
- 0.5°
- Resolution observation
- 25.0°
- Comments
- variable illumination and observation angles (not measured) depending of the time in the day (outdoor measurements)
- Observation mode
- single spot
- Experiment
- Visible near infrared spectra of salt crusts in Andean Salars, Chile
- Date begin
- 2015-02-27
- Release date
- 2021-06-07 11:20:35 UTC+0000
- Version (Date)
- #1 (2021-06-07 11:20:35 UTC+0000, Updated: 2021-06-07 11:20:35 UTC+0000)
- History
-
Date Mode Version Status Comments 2021-01-26 18:35:40 UTC+0000 first import #1 valid version
- Analysis
- The spectrum has been calibrated using a white reference (spectralon-99) measured in the same geometry and illumination conditions. Note that the provided data have not been corrected for the detector boundary artefacts which may trigger abrupt changes in reflectanceat 1000 nm and 1800 nm
- Quality flag
- 4
- Validator(s)