| PublicID | 2017p621854 |
| UTC Time | 2017-08-19T02:00:45Z |
| Latitude | -17.66 (± 18.0 km) |
| Longitude | -176.92 (± 80.3 km) |
| Depth | 540 km (± 0 km) |
| Depth Type | operator assigned |
| Earth Model | iasp91 |
| Used Phase Count | 50 |
| Used Station Count | 49 |
| Standard Error | 0.96 (s) |
| Azimuthal Gap | 346.92 (degrees) |
| Minimum Distance | 11.58 (degrees) |
| Type | Magnitude | Station Count |
| Preferred (M) | 5.5 | |
| Mwp | 5.8 (± 0.1) | 10 |
| Mw(Mwp) | 5.7 (± 0.4) | 10 |
| mB | 5.9 (± 0.2) | 36 |
| Mw(mB) | 5.5 (± 0.4) | 36 |
| M | 5.5 | 36 |
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.
