Download Event Information
Origin
PublicID |
2018p203569 |
UTC Time |
2018-03-17T07:42:01Z |
Latitude |
-38.06 (± 12.8
km)
|
Longitude |
177.56 (± 8.2
km)
|
Depth |
10 km (± 9 km) |
Depth Type |
free |
Earth Model |
nz3drx |
Used Phase Count |
50 |
Used Station Count |
50 |
Standard Error |
1.95 (s) |
Azimuthal Gap |
141.73 (degrees) |
Minimum Distance |
0.13 (degrees) |
Magnitudes
Type |
Magnitude |
Station Count |
Preferred (M) |
3.2 |
|
ML |
3.6 (± 0.5) |
38 |
MLv |
3.2 (± 0.5) |
34 |
M |
3.2 |
34 |
mB |
5.9 |
1 |
Mw(mB) |
5.5 (± 0.4) |
1 |
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).