Detailed info, map, data, reports, updates about this earthquake: Moderate mag. 4.9 earthquake (unconfirmed) - Indian Ocean, 98 km south of Encounter Bay, Victor Harbor, South Australia, Australia, on ...
A number that characterizes the relative size of an earthquake. Different scales are used, but the most common is the logarithmic Richter scale. where most quakes are between 0 (tiny) and 9 (extremely ...