Download Event Information
Origin
PublicID |
2017p219529 |
UTC Time |
2017-03-23T05:25:15Z |
Latitude |
-41.72 (± 8.0
km)
|
Longitude |
174.35 (± 7.5
km)
|
Depth |
10 km (± 6 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
45 |
Used Station Count |
45 |
Standard Error |
1.73 (s) |
Azimuthal Gap |
143.27 (degrees) |
Minimum Distance |
0.11 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.7 |
|
ML |
2.9 (± 0.2) |
21 |
MLv |
2.7 (± 0.2) |
24 |
M |
2.7 |
24 |
mB |
6.4 |
1 |
Mw(mB) |
6.1 (± 0.4) |
1 |
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).