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i.feotio2 - Calculates the FeO or TiO2 contents from the Clementine project Moon data.


imagery, Moon, Clementine, Chandrayaan1, UVVIS, M3, FeO, TiO2, reflectance


i.feotio2 --help
i.feotio2 [-t] band0=name band1=name output=name [param0=float] [param1=float] eqname=type [--overwrite] [--help] [--verbose] [--quiet] [--ui]


TiO2 (refl@415, refl@750 & y0Ti, s0Ti)
Allow output files to overwrite existing files
Print usage summary
Verbose module output
Quiet module output
Force launching GUI dialog


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
Value of theta (FeO) or y0Ti (TiO2)
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)

Table of contents


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){

double feolawrence2002(double uvvis2, double uvvis4){

double feowilcox2005(double uvvis2, double uvvis4){

double omatlucey2000(double uvvis2, double uvvis4){

double omatwilcox2005(double uvvis2, double uvvis4){

double tio2lucey2000(double uvvis1, double uvvis2){


Initially created for Clementine data.


(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.


Available at: i.feotio2 source code (history)

Latest change: Monday Jan 30 19:52:26 2023 in commit: cac8d9d848299297977d1315b7e90cc3f7698730

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