Download Event Information
Origin
PublicID |
2015p650838 |
UTC Time |
2015-08-29T19:22:43Z |
Latitude |
-17.40 (± 13.6
km)
|
Longitude |
-175.16 (± 52.4
km)
|
Depth |
52 km (± 17 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
35 |
Used Station Count |
33 |
Standard Error |
1.45 (s) |
Azimuthal Gap |
344.31 (degrees) |
Minimum Distance |
12.07 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.3 |
|
mB |
5.0 (± 0.2) |
7 |
Mw(mB) |
4.3 (± 0.4) |
7 |
M |
4.3 |
7 |
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).