Download Event Information
Origin
PublicID |
2017p770741 |
UTC Time |
2017-10-13T04:11:11Z |
Latitude |
-40.62 (± 3.8
km)
|
Longitude |
174.87 (± 4.4
km)
|
Depth |
16 km (± 8 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
36 |
Used Station Count |
36 |
Standard Error |
0.95 (s) |
Azimuthal Gap |
71.06 (degrees) |
Minimum Distance |
0.25 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.2 |
|
ML |
2.6 (± 0.2) |
27 |
MLv |
2.2 (± 0.2) |
19 |
M |
2.2 |
19 |
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).