Visible and Near-infrared BRDF spectra of synthetic volcanic glass: 70% crystals (N11)
- Title
- Visible and Near-infrared BRDF spectra of synthetic volcanic glass: 70% crystals (N11)
- DOI
- 10.26302/SSHADE/EXPERIMENT_BS_20260323_001
- Data reference
- Pisello, Alessandro; Fastelli, Maximiliano; Baroni, Marco; Schmitt, Bernard; Poch, Olivier; Beck, Pierre (2022): Visible and Near-infrared BRDF spectra of synthetic volcanic glasses with different glass/crystal ratios. SSHADE/CSS (OSUG Data Center). Dataset/Spectral Data. https://doi.org/10.26302/SSHADE/EXPERIMENT_BS_20260323_001
- Publications
- Database
- Experimentalists
- Experiment type
- laboratory measurement
- Type
- reflectance factor
- Intensity unit
- no unit
- Comments
- Data in Fig. 4 of the paper
- Instrument
- SHINE Spectro-Gonio bidirectional reflection Vis-NIR
- Sample holder
- Cylindrical aluminum sample holder
- Standard medium
- vacuum
- 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 #1 400.0 - 670.0 10.0 3.84 1.0 #2 680.0 - 1590.0 10.0 7.6 1.0 #3 1600.0 - 2830.0 10.0 15.3 1.5 #4 2840.0 - 3200.0 10.0 31.0 3.0 #5 3220.0 - 4180.0 20.0 31.0 3.0 - Scan number
- 10
- Comments
- A series of high pass filters is used to remove high orders of the gratings
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
- two variable angles
- Resolution illumination
- 5.8°
- Resolution observation
- 4.1°
- Comments
- 'Gognito' illumination attachment with focused beam.
Illumination
Observation
- Comments
- Partial polarization variable with wavelength (from the 3 monochromator gratings used)
- Observation mode
- single spot
- Resolutions
- 7.5 $mm$
- Comments
- spatial resolution at nadir illumination
- Number of geometries
- 25
| Incidence | Emergence | Azimuth | Phase |
|---|---|---|---|
| 0.0° | 20.0° | 0.0° | 20.0° |
| 0.0° | 40.0° | 0.0° | 40.0° |
| 0.0° | 60.0° | 0.0° | 60.0° |
| 0.0° | 70.0° | 0.0° | 70.0° |
| 30.0° | 0.0° | 0.0° | 30.0° |
| 30.0° | 20.0° | 0.0° | 10.0° |
| 30.0° | 40.0° | 0.0° | 10.0° |
| 30.0° | 60.0° | 0.0° | 30.0° |
| 30.0° | 70.0° | 0.0° | 40.0° |
| 60.0° | 0.0° | 0.0° | 60.0° |
| 60.0° | 20.0° | 0.0° | 40.0° |
| 60.0° | 40.0° | 0.0° | 20.0° |
| 60.0° | 70.0° | 0.0° | 10.0° |
| 0.0° | 20.0° | 180.0° | 20.0° |
| 0.0° | 40.0° | 180.0° | 40.0° |
| 0.0° | 60.0° | 180.0° | 60.0° |
| 0.0° | 70.0° | 180.0° | 70.0° |
| 30.0° | 20.0° | 180.0° | 50.0° |
| 30.0° | 40.0° | 180.0° | 70.0° |
| 30.0° | 60.0° | 180.0° | 90.0° |
| 30.0° | 70.0° | 180.0° | 100.0° |
| 60.0° | 20.0° | 180.0° | 80.0° |
| 60.0° | 40.0° | 180.0° | 100.0° |
| 60.0° | 60.0° | 180.0° | 120.0° |
| 60.0° | 70.0° | 180.0° | 130.0° |
- Experiment
- Visible and Near-infrared BRDF spectra of synthetic volcanic glasses with different glass/crystal ratios
- Date begin
- 2022-06-20
- Date end
- 2022-06-21
- Release date
- 2026-08-17 09:31:44+0000 UTC
- Version (Date)
- #1 (2026-08-17 09:31:44+0000 UTC, Updated: 2026-08-17 09:31:44+0000 UTC)
- History
-
Date Mode Version Status Comments 2026-07-18 14:15:04+0000 UTC first import #1 valid version
- Analysis
- Raw bidirectional reflectance spectrum calibrated: 1) with "Spectralon 99%" measured under same geometry using its absolute BRDF (400-1300nm) and 2) with "Infragold" using its relative spectral reflectance (1300-4200nm). Residual water vapor lines are observed.
- Quality flag
- 4
- Validator(s)