Multiangular reflectance of Olivine Hawaii in 5 Vis bands (250-500 µm grain size)

Spectrum

Title: Multiangular reflectance of Olivine Hawaii in 5 Vis bands (250-500 µm grain size)

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Angular geometry

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Data

Unit: Range: Valid spectral range(s): 9523.80952380952 - 22222.2222222222 micron

X Axis

Scale: Inverted:

Y Axis

Scale:

Legend

Position: Visibility:

References

Data reference

Daydou, Yves (2007): Multiangular reflectance of Olivine Hawaii Forsterite Fo88 sand in 5 visible spectral bands for 6 different grain sizes. SSHADE/PaSSTEL (OSUG Data Center). Dataset/Spectral Data.

Publications

Souchon, 2012, 1 - 217

Owner

Database

PaSSTEL

Experimentalists

Yves Daydou

Spectrum type

Experiment type: laboratory measurement
Type: reflectance factor
Intensity unit: no unit

Instrument #1

Instrument: ISEP narrow-band filters imaging - bidirectional reflection Vis-NIR

Spectral parameters

Standard medium

air

Observation mode

multi wavelengths

Spectral range type(s)

Vis

Valid spectral range(s)

	Min - Max (${\mu}m$)	Sampling (${\mu}m$)	Resolution (${\mu}m$)	Position accuracy (${\mu}m$)	Absorption edge
#1	0.45 - 1.05

Filters

	Type	Center/Edge (${\mu}m$)
#1	narrow bandpass	0.559
#2	narrow bandpass	0.699
#3	narrow bandpass	0.791
#4	narrow bandpass	0.88
#5	narrow bandpass	0.96

Comments

5 filters from 0.559 to 0.960 µm

Angular parameters

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: three variable angles

Comments: incidence 10 to 60°, emergence 0 to 70°, azimuth 0, 135, 180, 270, 315°, phase 25 to 130°

Spatial parameters

Observation mode: roi averaged

Angular geometries

Number of geometries: 23

Incidence	Emergence	Azimuth	Phase
10.0°	35.0°	0.0°	25.0°
30.0°	0.0°	0.0°	30.0°
30.0°	60.0°	0.0°	30.0°
50.0°	0.0°	0.0°	50.0°
50.0°	25.0°	0.0°	25.0°
30.0°	30.0°	135.0°	55.0247°
30.0°	60.0°	135.0°	82.7138°
50.0°	30.0°	135.0°	73.3914°
50.0°	60.0°	135.0°	98.4943°
55.0°	65.0°	135.0°	106.413°
60.0°	60.0°	135.0°	106.28°
10.0°	35.0°	180.0°	45.0°
30.0°	20.0°	180.0°	50.0°
30.0°	40.0°	180.0°	70.0°
30.0°	60.0°	180.0°	90.0°
50.0°	70.0°	180.0°	120.0°
60.0°	70.0°	180.0°	130.0°
45.0°	55.0°	270.0°	66.0725°
30.0°	60.0°	315.0°	42.3368°
50.0°	30.0°	315.0°	34.1564°
50.0°	60.0°	315.0°	37.7679°
55.0°	65.0°	315.0°	39.8824°
60.0°	60.0°	315.0°	38.7092°

Sample

Name: Olivine Hawaii Forsterite Fo88 sand 250-500 µm grains (C4)

Spectrum history

Experiment

Multiangular reflectance of Olivine Hawaii Forsterite Fo88 sand in 5 visible spectral bands for 6 different grain sizes

Date begin

2007-04-12

Date end

2009-09-30

Release date

2018-01-31 23:51:01 UTC+0000

Version (Date)

#1 (2018-01-31 23:51:01 UTC+0000, Updated: 2020-01-26 14:48:47 UTC+0000)

History

Date	Mode	Version	Status	Comments
2017-09-14 11:35:15 UTC+0000	first import	#1	valid version	first import

Spectrum analysis

Analysis: Reflectances are median values over an extended area in order to minimize specular effects on individual grains
Quality flag: 3