Download Event Information
Origin
PublicID |
2020p059320 |
UTC Time |
2020-01-22T22:45:51Z |
Latitude |
-39.66 (± 7.6
km)
|
Longitude |
175.36 (± 7.3
km)
|
Depth |
16 km (± 8 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
28 |
Used Station Count |
16 |
Standard Error |
0.23 (s) |
Azimuthal Gap |
201.54 (degrees) |
Minimum Distance |
0.29 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
1.6 |
|
ML |
1.5 (± 0.2) |
12 |
MLv |
1.6 (± 0.2) |
8 |
M |
1.6 |
8 |
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).