PublicID | 2023p068781 |
UTC Time | 2023-01-26T10:45:50Z |
Latitude | -30.62 (± 3.8 km) |
Longitude | -178.16 (± 8.3 km) |
Depth | 111 km (± 8 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 34 |
Used Station Count | 30 |
Standard Error | 2.46 (s) |
Azimuthal Gap | 110.28 (degrees) |
Minimum Distance | 1.37 (degrees) |
Type | Magnitude | Station Count |
Preferred (mB) | 5.8 (± 0.2) | |
MLv | 6.2 (± 0.3) | 7 |
ML | 6.3 (± 0.4) | 8 |
mB | 5.8 (± 0.2) | 102 |
Mw(mB) | 5.4 (± 0.4) | 24 |
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.