PublicID | 2019p322842 |
UTC Time | 2019-04-30T10:50:41Z |
Latitude | -37.54 (± 11.9 km) |
Longitude | -179.20 (± 5.3 km) |
Depth | 33 km (± 0 km) |
Depth Type | operator assigned |
Earth Model | iasp91 |
Used Phase Count | 27 |
Used Station Count | 16 |
Standard Error | 0.37 (s) |
Azimuthal Gap | 254.71 (degrees) |
Minimum Distance | 1.91 (degrees) |
Type | Magnitude | Station Count |
Preferred (M) | 3.3 | |
MLv | 3.3 (± 0.2) | 6 |
ML | 3.6 (± 0.3) | 12 |
M | 3.3 | 6 |
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.