| PublicID | 2021p715493 |
| UTC Time | 2021-09-22T17:33:00Z |
| Latitude | -29.87 (± 0.0 km) |
| Longitude | -177.38 (± 0.0 km) |
| Depth | 10 km (± 0 km) |
| Depth Type | free |
| Earth Model | |
| Used Phase Count | 0 |
| Used Station Count | 0 |
| Standard Error | 6.32 (s) |
| Azimuthal Gap | 0.00 (degrees) |
| Minimum Distance | 0.00 (degrees) |
| Type | Magnitude | Station Count |
| Preferred (mB) | 5.1 (± 0.1) | |
| ML | 5.3 (± 0.3) | 5 |
| MLv | 5.5 (± 0.1) | 5 |
| mB | 5.1 (± 0.1) | 8 |
| Mw(mB) | 4.5 (± 0.4) | 8 |
| M | 4.9 | 8 |
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.