PublicID | 2023p674163 |
UTC Time | 2023-09-07T10:34:05Z |
Latitude | -40.76 (± 2.8 km) |
Longitude | 176.13 (± 2.9 km) |
Depth | 27 km (± 5 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 31 |
Used Station Count | 20 |
Standard Error | 0.28 (s) |
Azimuthal Gap | 105.22 (degrees) |
Minimum Distance | 0.12 (degrees) |
Type | Magnitude | Station Count |
Preferred (MLv) | 2.9 (± 0.2) | |
ML | 3.2 (± 0.2) | 10 |
MLv | 2.9 (± 0.2) | 45 |
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.