NAME
i.feotio2 - Calculates the FeO or TiO2 contents from the Clementine project Moon data.
KEYWORDS
imagery,
Moon,
Clementine,
Chandrayaan1,
UVVIS,
M3,
FeO,
TiO2,
reflectance
SYNOPSIS
i.feotio2
i.feotio2 --help
i.feotio2 [-t] band0=name band1=name output=name [param0=float] [param1=float] eqname=type [--overwrite] [--help] [--verbose] [--quiet] [--ui]
Flags:
- -t
- TiO2 (refl@415, refl@750 & y0Ti, s0Ti)
- --overwrite
- Allow output files to overwrite existing files
- --help
- Print usage summary
- --verbose
- Verbose module output
- --quiet
- Quiet module output
- --ui
- Force launching GUI dialog
Parameters:
- band0=name [required]
- reflectance band at 750 nm (UVVIS 2, M3 9)
- band1=name [required]
- reflectance band at 950 nm (UVVIS 4 for FeO/OMAT, M3 19) or at 415 nm (UVVIS 1 for TiO2)
- output=name [required]
- Name for output raster map
- param0=float
- Value of theta (FeO) or y0Ti (TiO2)
- param1=float
- Value of s0Ti (TiO2)
- eqname=type [required]
- Type of equation
- Options: feolucey2000, feolawrence2002, feowilcox2005_setparam, feowilcox2005, feozhang2013, omatlucey2000, omatwilcox2005, tio2lucey2000_setparam, tio2lucey2000
- Default: feolucey2000
- feolucey2000: FeO (Lucey et al., 2000)
- feolawrence2002: FeO (lawrence et al., 2002)
- feowilcox2005_setparam: FeO (Wilcox et al., 2005) set parameter theta
- feowilcox2005: FeO (Wilcox et al., 2005)
- feozhang2013: FeO (Zhang et al., 2013)
- omatlucey2000: OMAT (Lucey et al., 2000)
- omatwilcox2005: OMAT (Wilcox et al., 2005)
- tio2lucey2000_setparam: TiO2 (Lucey et al., 2000) set parameters
- tio2lucey2000: TiO2 (Lucey et al., 2000)
i.feo_tio2 calculates the FeO or TiO2 contents from Clementine data.
Clementine UVVIS sensor has five bands, UVVIS1 = 415, UVVIS2 = 750,
UVVIS3 = 900, UVVIS4 = 950 and UVVIS5 = 1000 nm.
wt%TiO2 = 3.708 arctan ((R415/R750)-y0Ti)/(R750-s0Ti) (1)
wt%FeO = -137.97 ( R750 sin(theta) + (R950/R750) cos(theta) ) + 57.46 (2)
with theta = 1.3885 rad, the 'average slope of the trends in the mare' from Wilcox et al (2005).
Map-a-Planet Explorer mentions
this set of equations:
double feolucey2000(double uvvis2, double uvvis4){
//\cite{lucey2000lunar}
return(17.427*(-atan2f(((uvvis4/uvvis2)-1.19)/(uvvis2-0.08)))-7.565);
}
double feolawrence2002(double uvvis2, double uvvis4){
//\cite{lawrence2002iron}
return(5.7*((-0.147+0.372*(-(uvvis4/uvvis2-1.22)/(uvvis2-0.04))+(-0.036)*pow((-(uvvis4/uvvis2-1.22)/(uvvis2-0.04)),2)))+2.15);
}
double feowilcox2005(double uvvis2, double uvvis4){
//\cite{wilcox2005mapping}
return(-137.97*((uvvis2*0.9834)+(uvvis4/uvvis2*0.1813))+57.46);
}
double omatlucey2000(double uvvis2, double uvvis4){
//\cite{lucey2000lunar}
return(sqrtf(pow((uvvis2-0.08),2)+pow(((uvvis4/uvvis2)-1.19),2)));
}
double omatwilcox2005(double uvvis2, double uvvis4){
//\cite{wilcox2005mapping}
return((uvvis2*0.1813)-((uvvis4/uvvis2)*0.9834));
}
double tio2lucey2000(double uvvis1, double uvvis2){
//\cite{lucey2000lunar}
return(3.708*pow((atan2f(((uvvis1/uvvis2)-0.42)/(uvvis2-0.0))),5.979));
}
Initially created for Clementine data.
REFERENCES
(1) Lucey, P.G., Blewett, D.T., Jolliff, B.L., 2000. Lunar iron and titanium abundance algorithms based on final processing of Clementine ultraviolet-visible images. J. Geophys. Res. 105(E8): 20297-20305.
(2) Wilcox, B.B., Lucey, P.G., Gillis, J.J., 2005. Mapping iron in the lunar mare: An improved approach. J. Geophys. Res. 110(E11):2156-2202.
(3) Lawrence, DJ and Feldman, WC and Elphic, RC and Little, RC and Prettyman, TH and Maurice, S and Lucey, PG and Binder, AB, 2002. Iron abundances on the lunar surface as measured by the Lunar Prospector gamma-ray and neutron spectrometers. Journal of Geophysical Research: Planets (1991--2012), 107(E12):13-1.
Yann Chemin (B.Sc. student), Birkbeck, University of London.
SOURCE CODE
Available at:
i.feotio2 source code
(history)
Latest change: Monday Jan 30 19:52:26 2023 in commit: cac8d9d848299297977d1315b7e90cc3f7698730
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