PublicID | 2019p188081 |
UTC Time | 2019-03-11T14:07:53Z |
Latitude | -30.22 (± 10.7 km) |
Longitude | -178.80 (± 28.1 km) |
Depth | 312 km (± 10 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 42 |
Used Station Count | 23 |
Standard Error | 1.41 (s) |
Azimuthal Gap | 174.68 (degrees) |
Minimum Distance | 1.22 (degrees) |
Type | Magnitude | Station Count |
Preferred (M) | 4.1 | |
MLv | 4.2 (± 0.6) | 5 |
ML | 4.8 (± 0.2) | 6 |
mB | 4.1 (± 0.1) | 3 |
Mw(mB) | 3.1 (± 0.4) | 3 |
M | 4.1 | 5 |
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.