| PublicID | 2020p307333 |
| UTC Time | 2020-04-23T17:05:23Z |
| Latitude | -30.44 (± 28.2 km) |
| Longitude | -177.57 (± 28.7 km) |
| Depth | 296 km (± 35 km) |
| Depth Type | free |
| Earth Model | iasp91 |
| Used Phase Count | 28 |
| Used Station Count | 27 |
| Standard Error | 1.83 (s) |
| Azimuthal Gap | 216.73 (degrees) |
| Minimum Distance | 1.21 (degrees) |
| Type | Magnitude | Station Count |
| Preferred (mB) | 4.8 (± 0.1) | |
| ML | 4.8 (± 0.1) | 9 |
| MLv | 5.1 (± 0.1) | 12 |
| mB | 4.8 (± 0.1) | 15 |
| Mw(mB) | 4.0 (± 0.4) | 15 |
| M | 4.3 | 15 |
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.
