PublicID | 2015p728408 |
UTC Time | 2015-09-27T12:15:50Z |
Latitude | -45.29 (± 3.7 km) |
Longitude | 166.78 (± 5.5 km) |
Depth | 6 km (± 6 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 41 |
Used Station Count | 35 |
Standard Error | 0.90 (s) |
Azimuthal Gap | 221.04 (degrees) |
Minimum Distance | 0.88 (degrees) |
Type | Magnitude | Station Count |
Preferred (M) | 4.1 | |
MLv | 4.1 (± 0.2) | 25 |
ML | 4.3 (± 0.2) | 27 |
mB | 5.1 | 1 |
Mw(mB) | 4.5 (± 0.4) | 1 |
M | 4.1 | 25 |
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.