Download Event Information
Origin
PublicID |
2016p338173 |
UTC Time |
2016-05-05T02:57:56Z |
Latitude |
-34.00 (± 21.3
km)
|
Longitude |
-178.11 (± 29.2
km)
|
Depth |
55 km (± 56 km) |
Depth Type |
free |
Earth Model |
iaspei91 |
Used Phase Count |
30 |
Used Station Count |
17 |
Standard Error |
0.84 (s) |
Azimuthal Gap |
350.84 (degrees) |
Minimum Distance |
4.60 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.5 |
|
MLv |
4.7 (± 0.1) |
13 |
ML |
5.0 (± 0.2) |
13 |
mB |
5.0 (± 0.1) |
7 |
Mw(mB) |
4.3 (± 0.4) |
7 |
M |
4.5 |
13 |
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).