Download Event Information
Origin
PublicID |
2016p403544 |
UTC Time |
2016-05-29T07:27:20Z |
Latitude |
-30.85 (± 5.9
km)
|
Longitude |
-178.00 (± 13.8
km)
|
Depth |
276 km (± 7 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
77 |
Used Station Count |
51 |
Standard Error |
2.25 (s) |
Azimuthal Gap |
198.48 (degrees) |
Minimum Distance |
1.59 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
4.4 |
|
MLv |
5.1 (± 0.1) |
12 |
ML |
5.2 (± 0.2) |
14 |
mB |
4.9 (± 0.1) |
23 |
Mw(mB) |
4.2 (± 0.4) |
23 |
M |
4.4 |
23 |
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).