Abstract

The components of an object and the moisture in it can be estimated by measuring the degree of spectral polarization of scattered light from that object. In this paper the degree of spectral polarization of scattered light from CuSO4, CuCl2, Fe2O3, SiC, S, NiCl2, and CoCl2 as models of soil was measured and compared with that of volcanic ash and natural soil. From these results it is estimated that Fe appears in natural soil and Si appears in volcanic ash. The field capacity point of soil was obtained from measurements of the degree of spectral polarization, and it was detected more clearly in a shorter wavelength region (about 400 nm).

© 1978 Optical Society of America

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References

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  1. R. G. Reeves et al., Manual of Remote Sensing (American Society of Photogrammetry, New York, 1975).
  2. H. Genda, H. Okayama, Appl. Opt. 17, 807 (1978).
    [CrossRef] [PubMed]
  3. D. Clarke et al., Polarized Light and Optical Measurement (Pergamon, New York, 1971).
  4. S. Chandrasekhar, Radiative Transfer (Dover, New York, 1960).
  5. M. Kerker, M. I. Hampton, J. Opt. Soc. Am. 43, 370 (1953).
    [CrossRef]
  6. H. H. Blau, E. L. Gray, G. M. Bourioius, Appl. Opt. 6, 1899 (1967).
    [CrossRef] [PubMed]
  7. D. M. Gates, H. J. Keegan, J. C. Schleter, V. R. Weidner, Appl. Opt. 4, 11 (1965).
    [CrossRef]
  8. R. M. Hoffer, C. J. Johannsen, LARS Information Note 011069, Purdue University (1969).
  9. B. Inoue, M. Kotani, B. Tamamushi, K. Tomiyama, Ed., Physical and Chemical Dictionary (Iwanami, Japan, 1964).

1978 (1)

1967 (1)

1965 (1)

1953 (1)

Blau, H. H.

Bourioius, G. M.

Chandrasekhar, S.

S. Chandrasekhar, Radiative Transfer (Dover, New York, 1960).

Clarke, D.

D. Clarke et al., Polarized Light and Optical Measurement (Pergamon, New York, 1971).

Gates, D. M.

Genda, H.

Gray, E. L.

Hampton, M. I.

Hoffer, R. M.

R. M. Hoffer, C. J. Johannsen, LARS Information Note 011069, Purdue University (1969).

Johannsen, C. J.

R. M. Hoffer, C. J. Johannsen, LARS Information Note 011069, Purdue University (1969).

Keegan, H. J.

Kerker, M.

Okayama, H.

Reeves, R. G.

R. G. Reeves et al., Manual of Remote Sensing (American Society of Photogrammetry, New York, 1975).

Schleter, J. C.

Weidner, V. R.

Appl. Opt. (3)

J. Opt. Soc. Am. (1)

Other (5)

R. G. Reeves et al., Manual of Remote Sensing (American Society of Photogrammetry, New York, 1975).

D. Clarke et al., Polarized Light and Optical Measurement (Pergamon, New York, 1971).

S. Chandrasekhar, Radiative Transfer (Dover, New York, 1960).

R. M. Hoffer, C. J. Johannsen, LARS Information Note 011069, Purdue University (1969).

B. Inoue, M. Kotani, B. Tamamushi, K. Tomiyama, Ed., Physical and Chemical Dictionary (Iwanami, Japan, 1964).

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Figures (11)

Fig. 1
Fig. 1

Degree of spectral polarization of CuSO4 having water of crystallization.

Fig. 2
Fig. 2

Degree of spectral polarization of CuSO4 and CuCl2 having water of crystallization.

Fig. 3
Fig. 3

Degree of spectral polarization of SiC #500 and #1000.

Fig. 4
Fig. 4

Degree of spectral polarization of volcanic ash from the crater on Mt. Usu and the Kinomi housing area.

Fig. 5
Fig. 5

Degree of spectral polarization and absorbance of Fe2O3.

Fig. 6
Fig. 6

Degree of spectral polarization of red soil (Kanto loam layer) in several degrees of moisture content.

Fig. 7
Fig. 7

Degree of polarization vs percentage moisture of red soil in several wavelengths.

Fig. 8
Fig. 8

Degree of spectral polarization of Kiryu sand, Kanuma soil, and sand of the Yahagi River.

Fig. 9
Fig. 9

Degree of polarization vs percentage moisture of Kiryu sand at 405 nm.

Fig. 10
Fig. 10

Degree of spectral polarization of sulfur.

Fig. 11
Fig. 11

Degree of spectral polarization of NiCl2·6H2O and CoCl2·6H2O.

Tables (1)

Tables Icon

Table I Stokes Vectors of Scattered Light from CuSO4·5H2O, CuCl2·2H2O, Fe2O3, and Red Soil.

Equations (4)

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P = I p / ( I p + I u ) .
P = I max I min I max + I min ,
I = E x 2 + E y 2 , Q = E x 2 E y 2 , U = 2 E x E y cos 2 δ , V = 2 E x E y sin 2 δ = I sin 2 β ,
( Q 2 + U 2 + V 2 ) 1 / 2 = I · P .

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