PublicID | 2023p855710 |
UTC Time | 2023-11-13T14:42:36Z |
Latitude | -38.36 (± 11.4 km) |
Longitude | 176.62 (± 11.6 km) |
Depth | 120 km (± 17 km) |
Depth Type | free |
Earth Model | nz3drx |
Used Phase Count | 126 |
Used Station Count | 126 |
Standard Error | 2.93 (s) |
Azimuthal Gap | 174.00 (degrees) |
Minimum Distance | 0.08 (degrees) |
Type | Magnitude | Station Count |
Preferred (M) | 4.1 | |
MLv | 4.0 (± 0.4) | 82 |
M | 4.1 | 82 |
mB | 5.1 (± 0.2) | 4 |
Mw(mB) | 4.5 (± 0.4) | 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.