Download Event Information
Origin
PublicID |
2020p281209 |
UTC Time |
2020-04-14T01:06:42Z |
Latitude |
-30.45 (± 3.5
km)
|
Longitude |
-175.95 (± 5.8
km)
|
Depth |
33 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
40 |
Used Station Count |
27 |
Standard Error |
3.12 (s) |
Azimuthal Gap |
120.59 (degrees) |
Minimum Distance |
2.08 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (mB) |
6.1 (± 0.1) |
|
MLv |
6.8 (± 0.2) |
6 |
ML |
6.3 (± 0.2) |
6 |
mB |
6.1 (± 0.1) |
16 |
Mw(mB) |
5.8 (± 0.4) |
16 |
M |
6.1 |
16 |
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).