| PublicID | 2012p710605 |
| UTC Time | 2012-09-19T22:10:45Z |
| Latitude | -43.55 (± 0.7 km) |
| Longitude | 172.27 (± 1.0 km) |
| Depth | 10 km (± 2 km) |
| Depth Type | free |
| Earth Model | nz3drx |
| Used Phase Count | 37 |
| Used Station Count | 29 |
| Standard Error | 0.50 (s) |
| Azimuthal Gap | 79.48 (degrees) |
| Minimum Distance | 0.13 (degrees) |
| Type | Magnitude | Station Count |
| Preferred (M) | 3.6 | |
| MLv | 3.6 (± 0.3) | 17 |
| ML | 3.8 (± 0.3) | 12 |
| M | 3.6 | 17 |
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.