Magnitude 6.5, Mon Mar 28 1960 11:29 AM


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Origin


PublicID 1546103
UTC Time 1960-03-27T23:29:45Z
Latitude -39.04 (± 0.3 km)
Longitude 174.77 (± 0.5 km)
Depth 209 km (± 35 km)
Depth Type free
Earth Model nz1d
Used Phase Count 7
Used Station Count 6
Standard Error 1.20 (s)
Azimuthal Gap 227.00 (degrees)
Minimum Distance 0.63 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (ML) 6.5  
ML 6.5 0

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).

Origin Map


Map of New Zealand.

Map showing stations with picks used to locate the earthquake. Stations with picks that have a zero weight in the solution are shown as small grey circles. Those with a higher weight are shown as larger circles. The quake is shown by the largest circle.

Pick Residuals


-5.0-3.0-1.01.03.05.0residual (s)01234Distance (degrees)Pick Residuals