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@ -4,7 +4,7 @@
<head>
<meta charset="utf-8" /><meta name="viewport" content="width=device-width, initial-scale=1" />
<title>MLv &#8212; SeisComP Release documentation</title>
<title>MLv &#8212; SeisComP Development 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/pygments.css?v=72bcf2f2" />
@ -12,7 +12,7 @@
<link rel="stylesheet" type="text/css" href="../_static/graphviz.css?v=eafc0fe6" />
<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>
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<link rel="index" title="Index" href="../genindex.html" />
@ -25,8 +25,8 @@
<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">6.9.0</span>
<!-- span class="title">SeisComP Development</span -->
<span class="version">7.0.0</span>
</div>
</div>
</div>
@ -77,14 +77,15 @@
<p>Local (Richter) magnitude measured on the vertical component</p>
<section id="description">
<h2>Description<a class="headerlink" href="#description" title="Permalink to this heading"></a></h2>
<p>MLv is the local (Richter) magnitude (<span id="id1">Richter [<a class="reference internal" href="../base/references.html#id62" title="C.F. Richter. An instrumental earthquake magnitude scale. Bull. Seismol. Soc. Am., 1:1 - 32, 1935. URL: https://resolver.caltech.edu/CaltechAUTHORS:20140804-143558638, doi:10.1785/BSSA0250010001.">57</a>]</span>) computed from amplitudes measured on the
vertical component.</p>
<p>MLv is the local (Richter) magnitude (<span id="id1">Richter [<a class="reference internal" href="../base/references.html#id81" title="C.F. Richter. An instrumental earthquake magnitude scale. Bull. Seismol. Soc. Am., 1:1 - 32, 1935. URL: https://resolver.caltech.edu/CaltechAUTHORS:20140804-143558638, doi:10.1785/BSSA0250010001.">66</a>]</span>) computed from
amplitudes measured on the vertical component.</p>
<p>General (default) conditions apply:</p>
<ul class="simple">
<li><p>Amplitude unit in SeisComP: <strong>millimeter</strong> (mm) by simulation of a <a class="reference internal" href="../base/glossary.html#term-Wood-Anderson-seismometer"><span class="xref std std-term">Wood-Anderson seismometer</span></a>.</p></li>
<li><p>Amplitude unit in SeisComP: <strong>millimeter</strong> (mm) by simulation of a
<a class="reference internal" href="../base/glossary.html#term-Wood-Anderson-seismometer"><span class="xref std std-term">Wood-Anderson seismometer</span></a>.</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, configurable.</p></li>
<li><p>Default distance range: 0 - 8 deg, maximum is configurable
<a class="reference internal" href="global.html#confval-magnitudes.MLv.maxDistanceKm"><code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.MLv.maxDistanceKm</span></code></a>, measurements beyond 8 deg will be
<code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.MLv.maxDist</span></code>, measurements beyond 8 deg will be
strictly ignored.</p></li>
<li><p>Depth range: no limitation.</p></li>
</ul>
@ -97,17 +98,17 @@ for measuring amplitudes are configurable in the global bindings.</p>
<section id="station-magnitudes">
<h3>Station Magnitudes<a class="headerlink" href="#station-magnitudes" title="Permalink to this heading"></a></h3>
<p>The individual station MLv is calculated up to the epicentral distance
<a class="reference internal" href="global.html#confval-magnitudes.MLv.maxDistanceKm"><code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.MLv.maxDistanceKm</span></code></a> using the following formula:</p>
<code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.MLv.maxDist</span></code> using the following formula:</p>
<div class="math">
<p><img src="../_images/math/f73f0c80f57e4c0aa9f75af47267f7aa55522b40.png" alt="MLv = \log10(A) - \log10(A0)"/></p>
<p><img src="../_images/math/f73f0c80f57e4c0aa9f75af47267f7aa55522b40.svg" alt="MLv = \log10(A) - \log10(A0)"/></p>
</div><p>A is the MLv Wood-Anderson amplitude in millimeters. The second term
is the empirical calibration function, which in turn is a function
of the epicentral distance (see <span id="id2">Richter [<a class="reference internal" href="../base/references.html#id62" title="C.F. Richter. An instrumental earthquake magnitude scale. Bull. Seismol. Soc. Am., 1:1 - 32, 1935. URL: https://resolver.caltech.edu/CaltechAUTHORS:20140804-143558638, doi:10.1785/BSSA0250010001.">57</a>]</span>). This calibration
of the epicentral distance (see <span id="id2">Richter [<a class="reference internal" href="../base/references.html#id81" title="C.F. Richter. An instrumental earthquake magnitude scale. Bull. Seismol. Soc. Am., 1:1 - 32, 1935. URL: https://resolver.caltech.edu/CaltechAUTHORS:20140804-143558638, doi:10.1785/BSSA0250010001.">66</a>]</span>). This calibration
function can be configured globally or per station using global
bindings or the global module configuration variable
module.trunk.global.magnitudes.MLv.logA0 in <code class="file docutils literal notranslate"><span class="pre">global.cfg</span></code>, e.g.</p>
<div class="highlight-default notranslate"><div class="highlight"><pre><span></span><span class="n">module</span><span class="o">.</span><span class="n">trunk</span><span class="o">.</span><span class="k">global</span><span class="o">.</span><span class="n">magnitudes</span><span class="o">.</span><span class="n">MLv</span><span class="o">.</span><span class="n">logA0</span> <span class="o">=</span> <span class="s2">&quot;0:-1.3,60:-2.8,100:-3.0,400:-4.5,1000:-5.85&quot;</span>
<span class="n">module</span><span class="o">.</span><span class="n">trunk</span><span class="o">.</span><span class="k">global</span><span class="o">.</span><span class="n">magnitudes</span><span class="o">.</span><span class="n">MLv</span><span class="o">.</span><span class="n">maxDistanceKm</span> <span class="o">=</span> <span class="s2">&quot;-1&quot;</span>
<span class="n">module</span><span class="o">.</span><span class="n">trunk</span><span class="o">.</span><span class="k">global</span><span class="o">.</span><span class="n">magnitudes</span><span class="o">.</span><span class="n">MLv</span><span class="o">.</span><span class="n">maxDist</span> <span class="o">=</span> <span class="mi">1000</span><span class="n">km</span>
</pre></div>
</div>
<p>The logA0 configuration string consists of an arbitrary number of
@ -117,13 +118,13 @@ and the value corresponds to the <em>log10(A0)</em> term above.</p>
interpolation. E.g. for the above default specification, at a
distance of 80 km the <em>log10(A0)</em> value would be</p>
<div class="math">
<p><img src="../_images/math/6e45a883605015d556a6b6fe63821c64d8263242.png" alt="\log10(A0) &amp;= ((-3.0)-(-2.8))*(80-60)/(100-60)-2.8 \\
<p><img src="../_images/math/6e45a883605015d556a6b6fe63821c64d8263242.svg" alt="\log10(A0) &amp;= ((-3.0)-(-2.8))*(80-60)/(100-60)-2.8 \\
&amp;= -2.9"/></p>
</div><p>In other words, at 80 km distance the magnitude would be</p>
<div class="math">
<p><img src="../_images/math/e43775c444e67a786957a45f52e1b6a4b4d757a8.png" alt="MLv &amp;= \log10(A) - (-2.9) \\
<p><img src="../_images/math/e43775c444e67a786957a45f52e1b6a4b4d757a8.svg" alt="MLv &amp;= \log10(A) - (-2.9) \\
&amp;= \log10(A) + 2.9"/></p>
</div><p>which is according to the original Richter formula <span id="id3">[<a class="reference internal" href="../base/references.html#id62" title="C.F. Richter. An instrumental earthquake magnitude scale. Bull. Seismol. Soc. Am., 1:1 - 32, 1935. URL: https://resolver.caltech.edu/CaltechAUTHORS:20140804-143558638, doi:10.1785/BSSA0250010001.">57</a>]</span> if the
</div><p>which is according to the original Richter formula <span id="id3">[<a class="reference internal" href="../base/references.html#id81" title="C.F. Richter. An instrumental earthquake magnitude scale. Bull. Seismol. Soc. Am., 1:1 - 32, 1935. URL: https://resolver.caltech.edu/CaltechAUTHORS:20140804-143558638, doi:10.1785/BSSA0250010001.">66</a>]</span> if the
amplitude is measured in millimeters.</p>
</section>
<section id="network-magnitude">
@ -141,18 +142,18 @@ per network or per station using the configuration variables. Instead configurin
lots of global bindings profiles or station bindings one line per parameter can be
added to the global module configuration (<code class="file docutils literal notranslate"><span class="pre">global.cfg</span></code>), e.g.</p>
<p>global:</p>
<div class="highlight-params notranslate"><div class="highlight"><pre><span></span>module.trunk.global.magnitudes.MLv.logA0 = &quot;0:-1.3,60:-2.8,100:-3.0,400:-4.5,1000:-5.85&quot;
module.trunk.global.magnitudes.MLv.maxDistanceKm = -1
<div class="highlight-properties notranslate"><div class="highlight"><pre><span></span><span class="na">module.trunk.global.magnitudes.MLv.logA0</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;0:-1.3,60:-2.8,100:-3.0,400:-4.5,1000:-5.85&quot;</span>
<span class="na">module.trunk.global.magnitudes.MLv.maxDist</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">1000km</span>
</pre></div>
</div>
<p>or per network:</p>
<div class="highlight-params notranslate"><div class="highlight"><pre><span></span>module.trunk.GR.magnitudes.MLv.logA0 = &quot;0:-1.3,60:-2.8,100:-3.0,400:-4.5,1000:-5.85&quot;
module.trunk.GR.magnitudes.MLv.maxDistanceKm = -1
<div class="highlight-properties notranslate"><div class="highlight"><pre><span></span><span class="na">module.trunk.GR.magnitudes.MLv.logA0</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;0:-1.3,60:-2.8,100:-3.0,400:-4.5,1000:-5.85&quot;</span>
<span class="na">module.trunk.GR.magnitudes.MLv.maxDist</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">1000km</span>
</pre></div>
</div>
<p>or per station:</p>
<div class="highlight-params notranslate"><div class="highlight"><pre><span></span>module.trunk.GR.MOX.magnitudes.MLv.logA0 = &quot;0:-1.3,60:-2.8,100:-3.0,400:-4.5,1000:-5.85&quot;
module.trunk.GR.MOX.magnitudes.MLv.maxDistanceKm = -1
<div class="highlight-properties notranslate"><div class="highlight"><pre><span></span><span class="na">module.trunk.GR.MOX.magnitudes.MLv.logA0</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">&quot;0:-1.3,60:-2.8,100:-3.0,400:-4.5,1000:-5.85&quot;</span>
<span class="na">module.trunk.GR.MOX.magnitudes.MLv.maxDist</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="s">1000km</span>
</pre></div>
</div>
<p>Set the configuration and calibration parameters in the global bindings. By
@ -223,7 +224,7 @@ default MLv is computed by <a class="reference internal" href="scautopick.html#s
</a>
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<div>
Version <b>6.9.0</b> Release
Version <b>7.0.0</b> Development
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