Download Event Information
Origin
PublicID |
2020p149461 |
UTC Time |
2020-02-25T07:13:04Z |
Latitude |
-36.48 (± 16.6
km)
|
Longitude |
177.51 (± 18.1
km)
|
Depth |
187 km (± 19 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
22 |
Used Station Count |
12 |
Standard Error |
0.55 (s) |
Azimuthal Gap |
313.77 (degrees) |
Minimum Distance |
1.25 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.6 |
|
MLv |
2.6 (± 0.4) |
6 |
ML |
2.5 (± 0.3) |
8 |
M |
2.6 |
6 |
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).