PublicID | 2023p012475 |
UTC Time | 2023-01-05T14:47:18Z |
Latitude | -37.53 (± 7.2 km) |
Longitude | 179.22 (± 7.4 km) |
Depth | 12 km (± 0 km) |
Depth Type | operator assigned |
Earth Model | iasp91 |
Used Phase Count | 25 |
Used Station Count | 21 |
Standard Error | 0.48 (s) |
Azimuthal Gap | 281.39 (degrees) |
Minimum Distance | 0.70 (degrees) |
Type | Magnitude | Station Count |
Preferred (MLv) | 3.7 (± 0.2) | |
MLv | 3.7 (± 0.2) | 42 |
ML | 3.6 (± 0.2) | 17 |
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.