Download Event Information
Origin
PublicID |
2019p005792 |
UTC Time |
2019-01-03T03:25:50Z |
Latitude |
-47.87 (± 8.0
km)
|
Longitude |
165.26 (± 6.0
km)
|
Depth |
33 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
24 |
Used Station Count |
18 |
Standard Error |
0.87 (s) |
Azimuthal Gap |
129.81 (degrees) |
Minimum Distance |
1.96 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.9 |
|
MLv |
4.9 (± 0.2) |
9 |
ML |
5.1 (± 0.3) |
10 |
M |
4.9 |
9 |
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).