SeisComP3

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MLr

The MLr plugin is designed to use the MLv station amplitudes and provides a GNS/Geonet local magnitude (Jristau this study: - REF-). The magnitude uses a station correction term and the hypocentral distance Hard coded range are 0-20 degrees maximum distance, and 800 km max depth.

Description

Amplitude

The MLr amplitude calculation is that of the Mlv amplitude computation

Station Magnitude

The MLr plugin calculates the individual station local magnitude using the following formula:

//based on sed MLh magnitude: mag = \log10(waamp1) + A \times hypdistkm + B
mag = log10(waampl)-log10(waamplRef)
log10(waamplRef)= 0.2869 - 1.272*1e-3*(hypdistkm) -(1.493 * log10 (hypdistkm)) + (StationCorrection)
// A(station) Station correction - given by  module.trunk.NZ.WEL.MLR.params, A ;
// Sation Correction is set to be distance dependent;
// Option nomag disable the station magnitude.

waampl is the amplitude produced by the MLr plugin. Hypdistkm is the distance from the sensor to the hypocenter in kilometers.

Overall Event Magnitude

The GNS/Geonet Mlr local magnitude is using the default Sc3 behaviour for the automatic network magnitudes. Hard coded range are 0-20 degrees maximum distance, and 800 km max depth.