PublicID | 2016p136759 |
UTC Time | 2016-02-20T14:26:54Z |
Latitude | -38.33 (± 2.8 km) |
Longitude | 176.27 (± 3.7 km) |
Depth | 8 km (± 7 km) |
Depth Type | free |
Earth Model | iasp91 |
Used Phase Count | 18 |
Used Station Count | 15 |
Standard Error | 0.44 (s) |
Azimuthal Gap | 57.17 (degrees) |
Minimum Distance | 0.03 (degrees) |
Type | Magnitude | Station Count |
Preferred (M) | 3.4 | |
MLv | 3.4 (± 0.2) | 13 |
ML | 3.7 (± 0.3) | 13 |
M | 3.4 | 13 |
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.