PublicID | 2022p651347 |
UTC Time | 2022-08-29T23:54:23Z |
Latitude | -22.28 (± 23.8 km) |
Longitude | 179.33 (± 125.1 km) |
Depth | 300 km (± 0 km) |
Depth Type | operator assigned |
Earth Model | iasp91 |
Used Phase Count | 19 |
Used Station Count | 18 |
Standard Error | 0.86 (s) |
Azimuthal Gap | 353.24 (degrees) |
Minimum Distance | 15.48 (degrees) |
Type | Magnitude | Station Count |
Preferred (mB) | 4.4 (± 0.2) | |
mB | 4.4 (± 0.2) | 10 |
Mw(mB) | 3.5 (± 0.4) | 7 |
M | 3.5 | 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.