PublicID | 2023p919964 |
UTC Time | 2023-12-07T09:17:10Z |
Latitude | -41.44 (± 5.3 km) |
Longitude | 174.55 (± 2.9 km) |
Depth | 19 km (± 7 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 20 |
Used Station Count | 15 |
Standard Error | 0.25 (s) |
Azimuthal Gap | 138.18 (degrees) |
Minimum Distance | 0.23 (degrees) |
Type | Magnitude | Station Count |
Preferred (MLv) | 1.8 (± 0.1) | |
ML | 1.7 (± 0.2) | 10 |
MLv | 1.8 (± 0.1) | 4 |
M | 1.8 | 4 |
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.