PublicID | 2019p030923 |
UTC Time | 2019-01-12T10:35:19Z |
Latitude | -32.52 (± 18.6 km) |
Longitude | -179.88 (± 20.5 km) |
Depth | 442 km (± 44 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 26 |
Used Station Count | 20 |
Standard Error | 1.64 (s) |
Azimuthal Gap | 321.22 (degrees) |
Minimum Distance | 5.25 (degrees) |
Type | Magnitude | Station Count |
Preferred (mB) | 4.4 (± 0.3) | |
MLv | 4.7 (± 0.3) | 8 |
ML | 4.9 (± 0.4) | 7 |
mB | 4.4 (± 0.3) | 7 |
Mw(mB) | 3.5 (± 0.4) | 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.