| PublicID | 2021p333944 |
| UTC Time | 2021-05-04T13:25:47Z |
| Latitude | -43.51 (± 2.5 km) |
| Longitude | 170.24 (± 2.9 km) |
| Depth | 5 km (± 0 km) |
| Depth Type | operator assigned |
| Earth Model | iasp91 |
| Used Phase Count | 17 |
| Used Station Count | 12 |
| Standard Error | 0.42 (s) |
| Azimuthal Gap | 60.92 (degrees) |
| Minimum Distance | 0.13 (degrees) |
| Type | Magnitude | Station Count |
| Preferred (M) | 2.3 | |
| MLv | 2.3 (± 0.2) | 6 |
| ML | 2.2 (± 0.1) | 7 |
| M | 2.3 | 6 |
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.
