Download Event Information
Origin
PublicID |
2017p018044 |
UTC Time |
2017-01-07T16:14:09Z |
Latitude |
-37.04 (± 11.0
km)
|
Longitude |
179.19 (± 10.2
km)
|
Depth |
64 km (± 23 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
27 |
Used Station Count |
21 |
Standard Error |
0.51 (s) |
Azimuthal Gap |
312.50 (degrees) |
Minimum Distance |
0.99 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.6 |
|
MLv |
3.6 (± 0.2) |
15 |
ML |
3.8 (± 0.3) |
17 |
M |
3.6 |
15 |
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).