PublicID | 2012p834364 |
UTC Time | 2012-11-04T17:07:11Z |
Latitude | -24.88 (± 10.6 km) |
Longitude | -177.16 (± 29.9 km) |
Depth | 458 km (± 10 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 48 |
Used Station Count | 43 |
Standard Error | 1.25 (s) |
Azimuthal Gap | 337.06 (degrees) |
Minimum Distance | 4.40 (degrees) |
Type | Magnitude | Station Count |
Preferred (MLv) | 5.6 (± 0.2) | |
MLv | 5.6 (± 0.2) | 2 |
mB | 5.4 (± 0.2) | 26 |
Mw(mB) | 4.8 (± 0.4) | 26 |
GeoNet combines magnitudes into a summary magnitude, M, which consists of a weighted average of the individual magnitudes and attempts to be a best possible compromise between all magnitudes for a range of earthquake sizes.
Summary magnitude for GeoNet is then defined as:
M = (2 * MLv + (0.4 * number_of stations(Mw(mB)) - 1) * Mw(mB)) / (2 + (0.4 * number_of_stations(Mw(mB)) - 1))
Where MLv is local magnitude calculated on the vertical component and Mw(mB) is a Mw estimation based of mB by Bormann and Saul (2008).
Map showing stations with picks used to locate the earthquake. Stations with picks that have a zero weight in the solution are shown as small grey circles. Those with a higher weight are shown as larger circles. The quake is shown by the largest circle.