PublicID | 2021p461387 |
UTC Time | 2021-06-20T17:05:47Z |
Latitude | -30.44 (± 2.9 km) |
Longitude | -177.36 (± 7.2 km) |
Depth | 15 km (± 13 km) |
Depth Type | free |
Earth Model | tab |
Used Phase Count | 39 |
Used Station Count | 36 |
Standard Error | 3.10 (s) |
Azimuthal Gap | 120.49 (degrees) |
Minimum Distance | 1.27 (degrees) |
Type | Magnitude | Station Count |
Preferred (mB) | 6.5 (± 0.2) | |
mB | 6.5 (± 0.2) | 34 |
Mw(mB) | 6.3 (± 0.4) | 90 |
ML | 6.4 (± 0.1) | 9 |
MLv | 6.8 (± 0.1) | 10 |
M | 6.3 | 90 |
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.