Download Event Information
Origin
PublicID |
2015p332712 |
UTC Time |
2015-05-04T02:29:10Z |
Latitude |
-44.54 (± 2.9
km)
|
Longitude |
168.84 (± 2.6
km)
|
Depth |
4 km (± 3 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
34 |
Used Station Count |
27 |
Standard Error |
0.97 (s) |
Azimuthal Gap |
97.61 (degrees) |
Minimum Distance |
0.32 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (Mw(mB)) |
5.8 (± 0.4) |
|
MLv |
6.0 (± 0.2) |
30 |
ML |
6.2 (± 0.1) |
30 |
mB |
6.1 (± 0.2) |
9 |
Mw(mB) |
5.8 (± 0.4) |
9 |
M |
5.9 |
30 |
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).