PublicID | 2020p423244 |
UTC Time | 2020-06-05T14:23:46Z |
Latitude | -31.67 (± 22.5 km) |
Longitude | 178.94 (± 52.9 km) |
Depth | 418 km (± 49 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 30 |
Used Station Count | 17 |
Standard Error | 0.48 (s) |
Azimuthal Gap | 349.81 (degrees) |
Minimum Distance | 6.14 (degrees) |
Type | Magnitude | Station Count |
Preferred (M) | 4.3 | |
MLv | 4.3 (± 0.2) | 6 |
ML | 4.2 (± 0.2) | 11 |
mB | 4.3 | 1 |
Mw(mB) | 3.4 (± 0.4) | 1 |
M | 4.3 | 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.