Download Event Information
Origin
PublicID |
2015p216905 |
UTC Time |
2015-03-22T06:07:16Z |
Latitude |
-39.41 (± 51.8
km)
|
Longitude |
173.62 (± 77.7
km)
|
Depth |
9 km (± 158 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
18 |
Used Station Count |
18 |
Standard Error |
1.36 (s) |
Azimuthal Gap |
279.77 (degrees) |
Minimum Distance |
1.45 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.9 |
|
ML |
3.0 (± 0.3) |
11 |
MLv |
2.9 (± 0.3) |
11 |
M |
2.9 |
11 |
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).