Download Event Information
Origin
PublicID |
2017p012082 |
UTC Time |
2017-01-05T11:17:34Z |
Latitude |
-41.81 (± 3.1
km)
|
Longitude |
174.04 (± 2.1
km)
|
Depth |
14 km (± 3 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
42 |
Used Station Count |
28 |
Standard Error |
0.84 (s) |
Azimuthal Gap |
135.40 (degrees) |
Minimum Distance |
0.14 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
5.4 |
|
MLv |
5.4 (± 0.2) |
22 |
ML |
5.7 (± 0.1) |
22 |
M |
5.4 |
22 |
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).