PublicID | 2023p319607 |
UTC Time | 2023-04-29T06:00:46Z |
Latitude | -23.04 (± 16.9 km) |
Longitude | -175.57 (± 23.5 km) |
Depth | 300 km (± 0 km) |
Depth Type | operator assigned |
Earth Model | iasp91 |
Used Phase Count | 19 |
Used Station Count | 14 |
Standard Error | 0.91 (s) |
Azimuthal Gap | 212.65 (degrees) |
Minimum Distance | 6.58 (degrees) |
Type | Magnitude | Station Count |
Preferred (M) | 5.4 | |
MLv | 5.6 | 1 |
mB | 4.3 (± 0.8) | 3 |
Mw(mB) | 3.4 (± 0.8) | 3 |
M | 5.4 | 3 |
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.