Download Event Information
Origin
PublicID |
2019p358571 |
UTC Time |
2019-05-13T16:02:55Z |
Latitude |
-30.31 (± 14.0
km)
|
Longitude |
-178.74 (± 36.9
km)
|
Depth |
310 km (± 11 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
44 |
Used Station Count |
29 |
Standard Error |
1.81 (s) |
Azimuthal Gap |
187.53 (degrees) |
Minimum Distance |
1.27 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
4.5 (± 0.2) |
|
MLv |
4.0 (± 1.1) |
2 |
mB |
4.5 (± 0.2) |
7 |
Mw(mB) |
3.7 (± 0.4) |
7 |
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).