PublicID | 2023p874193 |
UTC Time | 2023-11-20T10:50:25Z |
Latitude | -40.52 (± 48.0 km) |
Longitude | 175.84 (± 23.2 km) |
Depth | 6 km (± 26 km) |
Depth Type | free |
Earth Model | nz3drx |
Used Phase Count | 14 |
Used Station Count | 14 |
Standard Error | 0.94 (s) |
Azimuthal Gap | 105.69 (degrees) |
Minimum Distance | 0.14 (degrees) |
Type | Magnitude | Station Count |
Preferred (M) | 3.0 | |
MLv | 3.0 (± 0.3) | 11 |
M | 3.0 | 11 |
ML | 2.9 (± 0.3) | 7 |
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.