PublicID | 2018p848708 |
UTC Time | 2018-11-11T00:28:18Z |
Latitude | -20.48 (± 19.1 km) |
Longitude | -172.28 (± 40.4 km) |
Depth | 10 km (± 0 km) |
Depth Type | operator assigned |
Earth Model | iasp91 |
Used Phase Count | 52 |
Used Station Count | 43 |
Standard Error | 2.00 (s) |
Azimuthal Gap | 345.27 (degrees) |
Minimum Distance | 10.13 (degrees) |
Type | Magnitude | Station Count |
Preferred (mB) | 5.4 (± 0.2) | |
mB | 5.4 (± 0.2) | 24 |
Mw(mB) | 4.8 (± 0.4) | 24 |
M | 4.8 | 24 |
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.