| PublicID | 2021p022608 |
| UTC Time | 2021-01-09T08:44:34Z |
| Latitude | -31.15 (± 51.9 km) |
| Longitude | -179.99 (± 89.1 km) |
| Depth | 389 km (± 141 km) |
| Depth Type | free |
| Earth Model | iasp91 |
| Used Phase Count | 9 |
| Used Station Count | 6 |
| Standard Error | 0.51 (s) |
| Azimuthal Gap | 352.21 (degrees) |
| Minimum Distance | 6.84 (degrees) |
| Type | Magnitude | Station Count |
| Preferred (M) | 4.7 | |
| ML | 4.3 (± 0.4) | 4 |
| MLv | 4.7 | 1 |
| mB | 4.2 (± 0.6) | 2 |
| Mw(mB) | 3.3 (± 0.6) | 2 |
| M | 4.7 | 1 |
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.