Illustration from Nishimura and Conlon, 1994, provided by
Clyde Nishimura, Naval Research Laboratory.
To obtain epicenter locations, visit the interactive GetPosit
map generation epicenter website, also known
as "autochart" is no longer available on our websites.
are derived from SOSUS and autonomous hydrophones located
in the NE Pacific, equatorial Pacific (EPR) and Mid-Atlantic
regions. This data is available via ftp. Please contact Andy.Lau@noaa.gov
for further information.