Download Event Information
Origin
PublicID |
2019p560986 |
UTC Time |
2019-07-27T13:33:47Z |
Latitude |
-43.62 (± 2.9
km)
|
Longitude |
172.60 (± 2.1
km)
|
Depth |
5 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
26 |
Used Station Count |
21 |
Standard Error |
0.30 (s) |
Azimuthal Gap |
81.52 (degrees) |
Minimum Distance |
0.10 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.4 |
|
MLv |
3.4 (± 0.2) |
8 |
ML |
3.7 (± 0.2) |
8 |
M |
3.4 |
8 |
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).