PublicID | 2023p676709 |
UTC Time | 2023-09-08T09:09:56Z |
Latitude | -33.04 (± 3.6 km) |
Longitude | -178.82 (± 6.8 km) |
Depth | 100 km (± 0 km) |
Depth Type | operator assigned |
Earth Model | iasp91 |
Used Phase Count | 28 |
Used Station Count | 23 |
Standard Error | 2.26 (s) |
Azimuthal Gap | 111.54 (degrees) |
Minimum Distance | 3.85 (degrees) |
Type | Magnitude | Station Count |
Preferred (Mw(mB)) | 6.8 (± 0.4) | |
mB | 6.9 (± 0.2) | 73 |
Mw(mB) | 6.8 (± 0.4) | 150 |
ML | 6.6 (± 0.3) | 12 |
MLv | 7.0 (± 0.2) | 12 |
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.