New identification of deep moonquakes in the Apollo lunar seismic data

A new computer search of the Apollo lunar seismic data set for identification of deep moonquakes using a combination of waveform cross-correlation and single-link cluster analysis has increased the number of positively identified deep moonquakes by more than a factor of five, from the previous 1360 to 7245. At least 88 new deep moonquake source regions (nests) have been discovered, while some source regions previously identified as separate entities are now determined to be identical, reducing the number of previously known source regions from 108 to 77. The newly identified deep moonquakes and their relationships to each other are likely to revise our understanding of their spatial and temporal distributions.