Download Event Information
Origin
PublicID |
2019p351961 |
UTC Time |
2019-05-11T05:23:24Z |
Latitude |
-30.93 (± 6.3
km)
|
Longitude |
-178.50 (± 16.5
km)
|
Depth |
367 km (± 9 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
40 |
Used Station Count |
27 |
Standard Error |
1.44 (s) |
Azimuthal Gap |
181.85 (degrees) |
Minimum Distance |
1.73 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
5.2 (± 0.2) |
|
MLv |
5.5 (± 0.4) |
9 |
M |
4.8 |
18 |
Mw(mB) |
4.6 (± 0.4) |
18 |
mB |
5.2 (± 0.2) |
18 |
ML |
5.5 (± 0.3) |
5 |
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).