|
|
|
|
|
<!DOCTYPE html>
|
|
|
|
|
|
|
|
|
|
|
|
<html >
|
|
|
|
|
|
<head>
|
|
|
|
|
|
<meta charset="utf-8" />
|
|
|
|
|
|
<title>MLh — SeisComP Release documentation</title>
|
|
|
|
|
|
<link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
|
|
|
|
|
|
<link rel="stylesheet" href="../_static/seiscomp.css" type="text/css" />
|
|
|
|
|
|
<link rel="stylesheet" type="text/css" href="../_static/graphviz.css" />
|
|
|
|
|
|
<script type="text/javascript" src="../_static/seiscomp.js"></script>
|
|
|
|
|
|
<script type="text/javascript" id="documentation_options" data-url_root="../" src="../_static/documentation_options.js"></script>
|
|
|
|
|
|
<script src="../_static/jquery.js"></script>
|
|
|
|
|
|
<script src="../_static/underscore.js"></script>
|
|
|
|
|
|
<script src="../_static/doctools.js"></script>
|
|
|
|
|
|
<script src="../_static/language_data.js"></script>
|
|
|
|
|
|
<link rel="shortcut icon" href="../_static/favicon.ico"/>
|
|
|
|
|
|
<link rel="index" title="Index" href="../genindex.html" />
|
|
|
|
|
|
<link rel="search" title="Search" href="../search.html" />
|
|
|
|
|
|
<link rel="next" title="Hypo71" href="global_hypo71.html" />
|
|
|
|
|
|
<link rel="prev" title="NonLinLoc" href="global_nonlinloc.html" />
|
|
|
|
|
|
</head>
|
|
|
|
|
|
<body>
|
|
|
|
|
|
<div class="header">
|
|
|
|
|
|
<div class="container">
|
|
|
|
|
|
<div class="brand">
|
|
|
|
|
|
<img class="logo" src="../_static/brands/seiscomp/text/white.svg"/>
|
|
|
|
|
|
<!-- span class="title">SeisComP Release</span -->
|
|
|
|
|
|
<span class="version">5.3.0</span>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="nav">
|
|
|
|
|
|
<div class="container">
|
|
|
|
|
|
<div class="content"><a class="pull-right" id="sidebar-toggle">TOC</a>
|
|
|
|
|
|
|
|
|
|
|
|
<div class="related" role="navigation" aria-label="related navigation">
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
<li class="right">
|
|
|
|
|
|
<a href="../genindex.html" title="General Index"
|
|
|
|
|
|
accesskey="I">
|
|
|
|
|
|
index
|
|
|
|
|
|
</a>
|
|
|
|
|
|
</li>
|
|
|
|
|
|
<li class="right">
|
|
|
|
|
|
<a href="global_hypo71.html" title="Hypo71"
|
|
|
|
|
|
accesskey="N">
|
|
|
|
|
|
next
|
|
|
|
|
|
</a>
|
|
|
|
|
|
</li>
|
|
|
|
|
|
<li class="right">
|
|
|
|
|
|
<a href="global_nonlinloc.html" title="NonLinLoc"
|
|
|
|
|
|
accesskey="P">
|
|
|
|
|
|
previous
|
|
|
|
|
|
</a>
|
|
|
|
|
|
</li>
|
|
|
|
|
|
<li class="nav-item nav-item-0">
|
|
|
|
|
|
<a href="../index.html">Home</a>
|
|
|
|
|
|
</li>
|
|
|
|
|
|
<li class="nav-item nav-item-1">
|
|
|
|
|
|
<a href="../toc/extensions.html" >Extensions</a>
|
|
|
|
|
|
</li>
|
|
|
|
|
|
<li class="nav-item nav-item-2">
|
|
|
|
|
|
<a href="../toc/extensions/global.html" accesskey="U">global</a>
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="container">
|
|
|
|
|
|
<div class="fitted content" id="anchors-container">
|
|
|
|
|
|
<div class="body" role="main">
|
|
|
|
|
|
|
|
|
|
|
|
<div class="section" id="mlh">
|
|
|
|
|
|
<span id="global-mlh"></span><h1>MLh<a class="headerlink" href="#mlh" title="Permalink to this headline">¶</a></h1>
|
|
|
|
|
|
<p>The MLh plugin (previously MLsed) is designed to compute amplitudes
|
|
|
|
|
|
and magnitudes according to the Swiss Seismological Service (SED)
|
|
|
|
|
|
standards.</p>
|
|
|
|
|
|
<div class="section" id="description">
|
|
|
|
|
|
<h2>Description<a class="headerlink" href="#description" title="Permalink to this headline">¶</a></h2>
|
|
|
|
|
|
<div class="section" id="amplitude">
|
|
|
|
|
|
<h3>Amplitude<a class="headerlink" href="#amplitude" title="Permalink to this headline">¶</a></h3>
|
|
|
|
|
|
<p>The MLh amplitude calculation is very similar to the original <a class="reference internal" href="global_ml.html#global-ml"><span class="std std-ref">ML</span></a>.
|
|
|
|
|
|
The two differences are:</p>
|
|
|
|
|
|
<ul class="simple">
|
|
|
|
|
|
<li><p>It uses the maximum of the two horizontal components (average can be configured if necessary)</p></li>
|
|
|
|
|
|
<li><p>It uses zero-to-peak in stead of peak-to-peak values</p></li>
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
<p>Zero-to-peak is calculated by just dividing the peak-to-peak amplitude by two.
|
|
|
|
|
|
This is not exact for unsymmetrical signals, but that doesn’t matter because the
|
|
|
|
|
|
code actually generates zero-to-peak amplitudes internally and multiplies them
|
|
|
|
|
|
with two. So in the end we get real zero-to-peak values.</p>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="section" id="station-magnitude">
|
|
|
|
|
|
<h3>Station Magnitude<a class="headerlink" href="#station-magnitude" title="Permalink to this headline">¶</a></h3>
|
|
|
|
|
|
<p>The MLh plugin calculates the individual station magnitude using the following formula:</p>
|
|
|
|
|
|
<div class="math">
|
|
|
|
|
|
<p><img src="../_images/math/4cfbd65af2e9b33bf217b7f95d186fabbf6a6db7.png" alt="mag = \log10(waamp1) + A \times hypdistkm + B"/></p>
|
|
|
|
|
|
</div><p>waampl is the amplitude produced by the MLh plugin. Hypdistkm is the distance
|
|
|
|
|
|
from the sensor to the hypocenter in kilometers. A and B are parameters that
|
|
|
|
|
|
can be configured in a config file. Several pairs of A and B can be configured
|
|
|
|
|
|
for different ranges of hypocenter distance.</p>
|
|
|
|
|
|
<ul class="simple">
|
|
|
|
|
|
<li><p>Amplitude unit in SeisComP: <strong>millimeter</strong> (mm)</p></li>
|
|
|
|
|
|
<li><p>Time window: 150 s by <a class="reference internal" href="scautopick.html#scautopick"><span class="std std-ref">scautopick</span></a> or distance dependent</p></li>
|
|
|
|
|
|
<li><p>Distance range: 0 - 20 deg</p></li>
|
|
|
|
|
|
<li><p>Depth range: 0 - 80 km</p></li>
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="section" id="network-magnitude">
|
|
|
|
|
|
<h3>Network Magnitude<a class="headerlink" href="#network-magnitude" title="Permalink to this headline">¶</a></h3>
|
|
|
|
|
|
<p>To compute the network magnitude from station magnitudes the SED standard is applied
|
|
|
|
|
|
by computing the median value of all contributing station magnitudes without any trimming.</p>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="section" id="configuration">
|
|
|
|
|
|
<h3>Configuration<a class="headerlink" href="#configuration" title="Permalink to this headline">¶</a></h3>
|
|
|
|
|
|
<p>Add the <em>mlh</em> plugin to the existing plugins in the global configuration.
|
|
|
|
|
|
Set the calibration parameters in the global bindings to compute MLh.
|
|
|
|
|
|
There exist no default configuration. Add MLh to the list of
|
|
|
|
|
|
amplitudes and magnitudes in the configuration of <a class="reference internal" href="scamp.html#scamp"><span class="std std-ref">scamp</span></a> and <a class="reference internal" href="scmag.html#scmag"><span class="std std-ref">scmag</span></a> for computation
|
|
|
|
|
|
and in <a class="reference internal" href="scesv.html#scesv"><span class="std std-ref">scesv</span></a> for visibility.</p>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<div id="anchors-bottom"></div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
<div class="sidebar" role="navigation" aria-label="main navigation">
|
|
|
|
|
|
<div id="anchors-top"></div>
|
|
|
|
|
|
<div id="anchors" class="content">
|
|
|
|
|
|
<div id="searchbox" style="display: none" role="search">
|
|
|
|
|
|
<h3 id="searchlabel">Quick search</h3>
|
|
|
|
|
|
<div class="searchformwrapper">
|
|
|
|
|
|
<form class="search" action="../search.html" method="get">
|
|
|
|
|
|
<input type="text" name="q" aria-labelledby="searchlabel" />
|
|
|
|
|
|
<input type="submit" value="Go" />
|
|
|
|
|
|
</form>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<script>$('#searchbox').show(0);</script>
|
|
|
|
|
|
<h3><a href="../index.html">Table of Contents</a></h3>
|
|
|
|
|
|
<ul>
|
|
|
|
|
|
<li><a class="reference internal" href="#">MLh</a><ul>
|
|
|
|
|
|
<li><a class="reference internal" href="#description">Description</a><ul>
|
|
|
|
|
|
<li><a class="reference internal" href="#amplitude">Amplitude</a></li>
|
|
|
|
|
|
<li><a class="reference internal" href="#station-magnitude">Station Magnitude</a></li>
|
|
|
|
|
|
<li><a class="reference internal" href="#network-magnitude">Network Magnitude</a></li>
|
|
|
|
|
|
<li><a class="reference internal" href="#configuration">Configuration</a></li>
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
</li>
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
|
|
|
|
|
|
<h4>Previous topic</h4>
|
|
|
|
|
|
<p class="topless"><a href="global_nonlinloc.html"
|
|
|
|
|
|
title="previous chapter">NonLinLoc</a></p>
|
|
|
|
|
|
<h4>Next topic</h4>
|
|
|
|
|
|
<p class="topless"><a href="global_hypo71.html"
|
|
|
|
|
|
title="next chapter">Hypo71</a></p>
|
|
|
|
|
|
<div role="note" aria-label="source link">
|
|
|
|
|
|
<h3>This Page</h3>
|
|
|
|
|
|
<ul class="this-page-menu">
|
|
|
|
|
|
<li><a href="../_sources/apps/global_mlh.rst.txt"
|
|
|
|
|
|
rel="nofollow">Show Source</a></li>
|
|
|
|
|
|
</ul>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="footer">
|
|
|
|
|
|
<div class="container">
|
|
|
|
|
|
<div class="horizontal layout content">
|
|
|
|
|
|
<a class="fade-in" href="https://www.gempa.de" target="_blank">
|
|
|
|
|
|
<img class="brand" src="../_static/brands/gempa.svg"/>
|
|
|
|
|
|
</a>
|
|
|
|
|
|
<div class="stretched align-center fitted content">
|
|
|
|
|
|
<div>
|
|
|
|
|
|
Version <b>5.3.0</b> Release
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<div class="copyright">
|
|
|
|
|
|
Copyright © gempa GmbH, GFZ Potsdam.
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<a class="fade-in" href="https://www.gfz-potsdam.de" target="_blank">
|
|
|
|
|
|
<img class="brand" src="../_static/brands/gfz.svg"/>
|
|
|
|
|
|
</a>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</body>
|
|
|
|
|
|
</html>
|
