PublicID | 2020p327278 |
UTC Time | 2020-05-01T02:13:10Z |
Latitude | -31.83 (± 76.8 km) |
Longitude | 179.02 (± 120.3 km) |
Depth | 447 km (± 132 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 9 |
Used Station Count | 9 |
Standard Error | 0.65 (s) |
Azimuthal Gap | 216.36 (degrees) |
Minimum Distance | 3.68 (degrees) |
Type | Magnitude | Station Count |
Preferred (mB) | 4.0 (± 0.1) | |
ML | 3.8 (± 0.1) | 7 |
MLv | 4.0 (± 0.1) | 3 |
mB | 4.0 (± 0.1) | 4 |
Mw(mB) | 3.1 (± 0.4) | 4 |
M | 3.8 | 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.