PublicID | 2019p662455 |
UTC Time | 2019-09-03T02:36:07Z |
Latitude | -35.99 (± 6.4 km) |
Longitude | 178.02 (± 7.0 km) |
Depth | 224 km (± 7 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 86 |
Used Station Count | 69 |
Standard Error | 0.89 (s) |
Azimuthal Gap | 260.43 (degrees) |
Minimum Distance | 1.59 (degrees) |
Type | Magnitude | Station Count |
Preferred (M) | 4.3 | |
ML | 4.6 (± 0.3) | 24 |
MLv | 4.3 (± 0.2) | 48 |
M | 4.3 | 48 |
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.