Download Event Information
Origin
PublicID |
2020p024454 |
UTC Time |
2020-01-10T01:05:40Z |
Latitude |
-21.86 (± 7.3
km)
|
Longitude |
-174.43 (± 7.4
km)
|
Depth |
33 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
13 |
Used Station Count |
9 |
Standard Error |
2.65 (s) |
Azimuthal Gap |
165.63 (degrees) |
Minimum Distance |
5.04 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (Mw(mB)) |
5.5 (± 0.5) |
|
M |
6.1 |
7 |
Mw(mB) |
5.5 (± 0.5) |
7 |
mB |
5.9 (± 0.5) |
7 |
ML |
6.5 (± 0.3) |
2 |
MLv |
6.6 (± 0.2) |
2 |
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).