Endmember spectra and classified mosaics derived from CRISM mapping data at the south pole of Mars ...

• Main Author: Cartwright, S. F. A.
• Format: Dataset
• Language: English
• Published: Zenodo 2023
• Subjects: Mars; polar; ice; spectroscopy; machine learning; South pole
• Online Access: https://dx.doi.org/10.5281/zenodo.8201616; https://zenodo.org/record/8201616

Overview Multispectral mapping data from the Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) provide a unique opportunity to characterize south polar ice deposits at higher spectral sampling, spatial resolution, or spatiotemporal coverage than previous work. This new perspective can help to constrain the nature and distribution of different mixtures of CO 2 ice, H 2 O ice, and dust that influence the formation, evolution, and preservation of Mars climate records. We processed 1103 CRISM observations spanning southern summer of six Mars Years through a combination of k -means clustering and random forest classification. Using a set of 12 spectral endmembers directly tied to previous work with high-resolution CRISM targeted data, we made a series of temporally restricted mosaics showing surface spectral variation over time. The endmember set and classified mosaics produced in this work can provide critical context for future studies of the dynamic processes that shape south polar ice deposits. ...