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Iron mineralogy of the martian surface with OMEGA spectrometer

Goal of this paper is mapping the 1 μm from the OMEGA spectra in order to study the Martian iron mineralogy. This study is based on the results of Carrozzo et al. [1]. Goal of this paper is to map the 1 μm absorption signature in OMEGA spectra, in order to study the Martian mineralogy. In particular, we search for new spectral indices around the 1-μm absorption and the correlations between them. Due to the misalignment of the OMEGA VNIR and SWIR channels, spectral indices related to the 1-μm absorption have been usually computed by using the left or right shoulders of the absorption [2,3], without considering he band as a whole. In this work we report on a method we used to co-register the VNIR and SWIR channels of the OMEGA instrument to properly compute the 1 μm band area, search for new spectral indices and possible correlations between them.