Download Event Information
Origin
PublicID |
2014p547557 |
UTC Time |
2014-07-22T14:18:54Z |
Latitude |
-39.17 (± 59.4
km)
|
Longitude |
176.41 (± 1782.8
km)
|
Depth |
0 km (± 15 km) |
Depth Type |
free |
Earth Model |
iaspei91 |
Used Phase Count |
22 |
Used Station Count |
22 |
Standard Error |
1.77 (s) |
Azimuthal Gap |
191.13 (degrees) |
Minimum Distance |
0.06 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
2.7 |
|
ML |
3.0 (± 0.4) |
12 |
MLv |
2.7 (± 0.4) |
12 |
M |
2.7 |
12 |
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).