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Dirk Rössler
2025-10-30 12:04:59 +01:00
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share/doc/seiscomp/html/apps/global_ms_20.html
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@ -4,7 +4,7 @@
<head>
<meta charset="utf-8" /><meta name="viewport" content="width=device-width, initial-scale=1" />
<title>Ms_20 &#8212; SeisComP Release documentation</title>
<title>Ms_20 &#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>
<script data-url_root="../" id="documentation_options" src="../_static/documentation_options.js?v=823bb831"></script>
<script data-url_root="../" id="documentation_options" src="../_static/documentation_options.js?v=744d344a"></script>
<script src="../_static/doctools.js?v=888ff710"></script>
<script src="../_static/sphinx_highlight.js?v=4825356b"></script>
<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>
@ -87,24 +87,24 @@ corrected for the instrument response of a <a class="reference internal" href=".
<section id="station-magnitude">
<h3>Station Magnitude<a class="headerlink" href="#station-magnitude" title="Permalink to this heading"></a></h3>
<p>Ms_20 is the surface-wave magnitude at 20 s period based on the recommendations
by the IASPEI magnitude working group issued on 27 March, 2013 (<span id="id1">IASPEI [<a class="reference internal" href="../base/references.html#id40" title="IASPEI. Summary of magnitude working group recommendations on standard procedures for determining earthquake magnitudes from digital data. IASPEI Website, 2013. URL: http://www.iaspei.org/commissions/commission-on-seismological-observation-and-interpretation/Summary_WG_recommendations_20130327.pdf.">46</a>]</span>).</p>
by the IASPEI magnitude working group issued on 27 March, 2013 (<span id="id1">IASPEI [<a class="reference internal" href="../base/references.html#id55" title="IASPEI. Summary of magnitude working group recommendations on standard procedures for determining earthquake magnitudes from digital data. IASPEI Website, 2013. URL: http://www.iaspei.org/commissions/commission-on-seismological-observation-and-interpretation/Summary_WG_recommendations_20130327.pdf.">54</a>]</span>).</p>
<div class="math">
<p><img src="../_images/math/e09fa212079ab87241b0d94c484f2a485283c708.png" alt="M_s = \log \left(\frac{A}{T}\right) + 1.66 \log(\Delta) + 0.3"/></p>
<p><img src="../_images/math/e09fa212079ab87241b0d94c484f2a485283c708.svg" alt="M_s = \log \left(\frac{A}{T}\right) + 1.66 \log(\Delta) + 0.3"/></p>
</div><p>with</p>
<p>A: <a class="reference internal" href="../base/glossary.html#term-WWSSN_LP"><span class="xref std std-term">WWSSN_LP</span></a> corrected ground displacement in units of nm measured on the vertical-component
seismogram as the maximum absolute trace amplitude of a surface wave at periods between
18 s and 22 s,</p>
<p>T: period of the surface wave in seconds.</p>
<p>The term <em>Ms_20</em> is chosen in accordance with the IASPEI standard as of 2013 (<span id="id2">IASPEI [<a class="reference internal" href="../base/references.html#id40" title="IASPEI. Summary of magnitude working group recommendations on standard procedures for determining earthquake magnitudes from digital data. IASPEI Website, 2013. URL: http://www.iaspei.org/commissions/commission-on-seismological-observation-and-interpretation/Summary_WG_recommendations_20130327.pdf.">46</a>]</span>).
<p>The term <em>Ms_20</em> is chosen in accordance with the IASPEI standard as of 2013 (<span id="id2">IASPEI [<a class="reference internal" href="../base/references.html#id55" title="IASPEI. Summary of magnitude working group recommendations on standard procedures for determining earthquake magnitudes from digital data. IASPEI Website, 2013. URL: http://www.iaspei.org/commissions/commission-on-seismological-observation-and-interpretation/Summary_WG_recommendations_20130327.pdf.">54</a>]</span>).
Alternatively, the term <em>Ms(20)</em> may be used.</p>
<ul class="simple">
<li><p>Amplitude unit in <cite>SeisComP</cite>: <strong>nanometer</strong> (nm)</p></li>
<li><p>Time window: 0 s - distance (km) / 3.5 km/s + 30 s</p></li>
<li><p>Period range: 18 s - 22 s, configurable: <a class="reference internal" href="global.html#confval-magnitudes.Ms_20.lowerPeriod"><code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.lowerPeriod</span></code></a>,
<a class="reference internal" href="global.html#confval-magnitudes.Ms_20.upperPeriod"><code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.upperPeriod</span></code></a></p></li>
<li><p>Default distance range: 20 - 160 deg, configurable: <a class="reference internal" href="global.html#confval-magnitudes.Ms_20.minDist"><code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.minDist</span></code></a>,
<a class="reference internal" href="global.html#confval-magnitudes.Ms_20.maxDist"><code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.maxDist</span></code></a></p></li>
<li><p>Depth range: &lt;= 100 km, configurable: <a class="reference internal" href="global.html#confval-magnitudes.Ms_20.maxDepth"><code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.maxDepth</span></code></a></p></li>
<li><p>Period range: 18 s - 22 s, configurable: <code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.lowerPeriod</span></code>,
<code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.upperPeriod</span></code></p></li>
<li><p>Default distance range: 20 - 160 deg, configurable: <code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.minDist</span></code>,
<code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.maxDist</span></code></p></li>
<li><p>Depth range: &lt;= 100 km, configurable: <code class="xref std std-confval docutils literal notranslate"><span class="pre">magnitudes.Ms_20.maxDepth</span></code></p></li>
</ul>
</section>
<section id="network-magnitude">
@ -184,7 +184,7 @@ Ms_20 to the list of computed amplitudes and magnitudes in the configuration of
</a>
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<div>
Version <b>6.9.0</b> Release
Version <b>7.0.0</b> Development
</div>
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