Understanding degradome-seq result

Question

[I0110]

I am trying to understand degradome-seq result. On GEO, many datasets are associated with processed files like with sequences and counts (see below). I was wondering how can I map those reads back to the genome to get the positions (e.g. on chr 1 and start from position 11111 to 11133)? Just BLAST each reads back to the genome to find the location of the reads? Thanks for any suggestions!