Magnitude 4.9, Sun Feb 8 1914 11:31 AM


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Origin


PublicID 2178092
UTC Time 1914-02-08T00:01:00Z
Latitude -41.00 (± 0.0 km)
Longitude 175.00 (± 0.0 km)
Depth 45 km (± 0 km)
Depth Type operator assigned
Earth Model
Used Phase Count 0
Used Station Count 0
Standard Error 0.00 (s)
Azimuthal Gap 0.00 (degrees)
Minimum Distance 0.00 (degrees)

Magnitudes


Type Magnitude Station Count
Preferred (MS) 4.9  
MS 4.9 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 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


residual (s)Distance (degrees)Pick Residuals