Download Event Information
Origin
PublicID |
2016p704563 |
UTC Time |
2016-09-17T16:31:31Z |
Latitude |
-37.16 (± 4.6
km)
|
Longitude |
179.02 (± 6.5
km)
|
Depth |
19 km (± 7 km) |
Depth Type |
free |
Earth Model |
iasp91 |
Used Phase Count |
63 |
Used Station Count |
53 |
Standard Error |
1.06 (s) |
Azimuthal Gap |
276.85 (degrees) |
Minimum Distance |
0.69 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.5 |
|
ML |
3.8 (± 0.3) |
41 |
MLv |
3.5 (± 0.2) |
30 |
M |
3.5 |
30 |
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).