PublicID | 2021p254914 |
UTC Time | 2021-04-05T07:37:53Z |
Latitude | -37.59 (± 5.2 km) |
Longitude | 179.74 (± 7.2 km) |
Depth | 33 km (± 0 km) |
Depth Type | operator assigned |
Earth Model | iasp91 |
Used Phase Count | 36 |
Used Station Count | 25 |
Standard Error | 0.40 (s) |
Azimuthal Gap | 288.39 (degrees) |
Minimum Distance | 1.07 (degrees) |
Type | Magnitude | Station Count |
Preferred (MLv) | 6.0 (± 0.2) | |
ML | 6.0 (± 0.2) | 19 |
MLv | 6.0 (± 0.2) | 19 |
mB | 6.7 | 1 |
Mw(mB) | 6.5 (± 0.4) | 1 |
M | 6.0 | 19 |
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.