Download Event Information
Origin
PublicID |
2020p770963 |
UTC Time |
2020-10-12T06:05:16Z |
Latitude |
-23.13 (± 10.2
km)
|
Longitude |
-174.46 (± 13.3
km)
|
Depth |
216 km (± 8 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
44 |
Used Station Count |
33 |
Standard Error |
3.46 (s) |
Azimuthal Gap |
189.02 (degrees) |
Minimum Distance |
5.85 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
5.0 |
|
MLv |
5.6 (± 0.4) |
2 |
mB |
4.6 (± 0.1) |
5 |
Mw(mB) |
3.8 (± 0.4) |
5 |
M |
5.0 |
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).