Phase one of our updated website is now live. Explore GeoNet beta and let us know what you think. Read this news article to find out what's happening.
| PublicID | 2024p128957 |
| UTC Time | 2024-02-17T17:01:04Z |
| Latitude | -22.07 (± 6.6 km) |
| Longitude | -174.94 (± 12.1 km) |
| Depth | 258 km (± 12 km) |
| Depth Type | free |
| Earth Model | iasp91 |
| Used Phase Count | 23 |
| Used Station Count | 18 |
| Standard Error | 5.50 (s) |
| Azimuthal Gap | 141.49 (degrees) |
| Minimum Distance | 5.56 (degrees) |
| Type | Magnitude | Station Count |
| Preferred (mB) | 3.9 | |
| mB | 3.9 | 1 |
| Mw(mB) | 2.9 (± 0.4) | 1 |
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.