Download Event Information
Origin
PublicID |
2015p645137 |
UTC Time |
2015-08-27T16:46:58Z |
Latitude |
-27.44 (± 11.8
km)
|
Longitude |
-179.43 (± 31.3
km)
|
Depth |
600 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
26 |
Used Station Count |
23 |
Standard Error |
3.22 (s) |
Azimuthal Gap |
338.92 (degrees) |
Minimum Distance |
9.80 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.1 |
|
mB |
4.1 (± 0.4) |
5 |
Mw(mB) |
3.1 (± 0.4) |
5 |
M |
3.1 |
5 |
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).