Download Event Information
Origin
PublicID |
2015p430431 |
UTC Time |
2015-06-09T06:13:39Z |
Latitude |
-44.56 (± 5.8
km)
|
Longitude |
168.88 (± 9.7
km)
|
Depth |
7 km (± 8 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
21 |
Used Station Count |
20 |
Standard Error |
0.70 (s) |
Azimuthal Gap |
138.03 (degrees) |
Minimum Distance |
0.29 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.9 |
|
MLv |
3.9 (± 0.1) |
16 |
ML |
4.0 (± 0.1) |
16 |
M |
3.9 |
16 |
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).