Download Event Information
Origin
PublicID |
2020p528930 |
UTC Time |
2020-07-14T16:53:11Z |
Latitude |
-31.85 (± 5.0
km)
|
Longitude |
179.69 (± 10.1
km)
|
Depth |
12 km (± 0 km) |
Depth Type |
operator assigned |
Earth Model |
iasp91 |
Used Phase Count |
38 |
Used Station Count |
26 |
Standard Error |
1.96 (s) |
Azimuthal Gap |
164.38 (degrees) |
Minimum Distance |
3.30 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (MLv) |
4.6 (± 0.2) |
|
ML |
4.3 (± 0.1) |
20 |
MLv |
4.6 (± 0.2) |
15 |
mB |
4.9 (± 0.2) |
13 |
Mw(mB) |
4.2 (± 0.4) |
13 |
M |
4.3 |
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).