# MN — SeisComP Release documentation

6.9.0

# MN

Nuttli magnitude for Canada and other Cratonic regions

## Description

MN is the Nuttli magnitude [53] for Canada and other Cratonic regions. It is implemented by the nuttli plugin according to the Geological Survey of Canada (NRCan).

For measuring AMN amplitudes and for computing MN magnitudes SeisComP provides regionalization.

### Amplitude

Amplitude unit in SeisComP: meter/second (m/s)

## Settings

Add the nuttli plugin to the list of loaded plugins e.g. in the global module configuration:

    plugins = ${plugins},nuttli

Adjust MN-specific global bindings parameters in the amplitude section and set the region-specific calibration parameters in the global module configuration.

### scamp

Add the Nuttli amplitude type, AMN, to the range of magnitudes for which the amplitudes are to be calculated by scamp, e.g.:

    amplitudes = AMN

Adjust MN-specific global bindings parameters in the amplitude section and set the region-specific calibration parameters in the global module configuration (amplitude section).

Note

Provide AMN for computing Nuttli-type amplitudes.

### scmag

Add the Nuttli magnitude type, MN, to the range of magnitudes to be calculated by scmag, e.g.:

    magnitudes = MN

Adjust MN-specific global bindings parameters in the magnitude section and define the region polygons in the global module configuration (magnitude section).

## Module Configuration

Note

amplitudes.MN.* Amplitude control parameters for MN (Nuttli magnitude).

amplitudes.MN.velocityModel

  Default: `iasp91`

  Type: string

  The travel time table set compiled for LocSAT. The tables are located in "share/locsat/tables/[vmodel].*".

Note

magnitudes.MN.* Regionalization of MN (Nuttli magnitude).

magnitudes.MN.region

  Default: `@DATADIR@/magnitudes/MN/MN.bna`

  Type: path

  The path to the BNA file which defines the valid region for the MN magnitude. Note that the entire path from source to receiver must lie entirely within the polygon(s).

magnitudes.MN.offsetMw

  Type: double

  The offset applied to the MN network magnitude to estimate Mw(MN). If not configured then no Mw estimation will be applied.