This directory contains original and processed data from the 2021 Tiers survey together with some basic images.

The spectrometric data have been subjected to additional processing to remove terrain effects by Minty Geophysics, first with the global SRTM terrain model resampled to 30 metres, and also with the MRT 10 metre bare earth DEM, considered to be more accurate.  The latter version is in the directory 'Spec_TopoCorrected10m', while the former is within the SPEC directory as specTopoCorr30m.zip