Download Event Information
Origin
PublicID |
2017p155046 |
UTC Time |
2017-02-27T08:48:27Z |
Latitude |
-34.13 (± 16.8
km)
|
Longitude |
179.72 (± 23.1
km)
|
Depth |
311 km (± 14 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
59 |
Used Station Count |
42 |
Standard Error |
1.26 (s) |
Azimuthal Gap |
337.57 (degrees) |
Minimum Distance |
3.61 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.5 |
|
ML |
3.9 (± 0.4) |
7 |
MLv |
4.1 (± 0.3) |
24 |
mB |
4.2 (± 0.3) |
12 |
Mw(mB) |
3.2 (± 0.4) |
12 |
M |
3.5 |
24 |
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).