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{"cells": [{"cell_type": "markdown", "metadata": {}, "source": ["<div style='background-image: url(\"../share/images/header.svg\") ; padding: 0px ; background-size: cover ; border-radius: 5px ; height: 250px'>\n", " <div style=\"float: right ; margin: 50px ; padding: 20px ; background: rgba(255 , 255 , 255 , 0.7) ; width: 50% ; height: 150px\">\n", " <div style=\"position: relative ; top: 50% ; transform: translatey(-50%)\">\n", " <div style=\"font-size: xx-large ; font-weight: 900 ; color: rgba(0 , 0 , 0 , 0.8) ; line-height: 100%\">ObsPy Tutorial</div>\n", " <div style=\"font-size: large ; padding-top: 20px ; color: rgba(0 , 0 , 0 , 0.5)\">Exercise: Event Detection and Magnitude Estimation in an Aftershock Series</div>\n", " </div>\n", " </div>\n", "</div>"]}, {"cell_type": "markdown", "metadata": {}, "source": ["Seismo-Live: http://seismo-live.org\n", "\n", "##### Authors:\n", "* Tobias Megies ([@megies](https://github.com/megies))\n", "* Lion Krischer ([@krischer](https://github.com/krischer))\n", "---"]}, {"cell_type": "markdown", "metadata": {}, "source": [""]}, {"cell_type": "markdown", "metadata": {}, "source": ["# Exercise -- The 2008 Mt. Carmel, Illinois, Earthquake and Aftershock Series\n", "\n", "Introduction from \n", "[\"The April 18, 2008 Illinois Earthquake: An ANSS Monitoring Success\" by Robert B. Herrmann, Mitch Withers, and Harley Benz, SRL 2008](http://srl.geoscienceworld.org/content/79/6/830.extract):\n", "\n", "*\"The largest-magnitude earthquake in the past 20 years struck near **Mt. Carmel in southeastern Illinois** on Friday morning, 18 April 2008 at 09:36:59 UTC (04:37 CDT). **The Mw 5.2 earthquake was felt over an area that spanned Chicago and Atlanta**, with about 40,000 reports submitted to the U.S. Geological Survey (USGS) \u201cDid You Feel It?\u201d system. There were at least six felt aftershocks greater than magnitude 3 and 20 aftershocks with magnitudes greater than 2 located by regional and national seismic networks. **Portable instrumentation was deployed** by researchers of the University of Memphis and Indiana University (the first portable station was installed at about 23:00 UTC on 18 April). The portable seismographs were deployed both to capture near-source, high-frequency ground motions for significant aftershocks and to better understand structure along the active fault. [...]\"*\n", "\n", "<img src=\"http://earthquake.usgs.gov/images/globes/40_-90.jpg\" alt=\"World map\" style=\"width: 250px;\"/>\n", "<img src=\"http://earthquake.usgs.gov/earthquakes/dyfi/events/us/2008qza6/us/us2008qza6_ciim_zoomout.jpg\" alt=\"Felt report map\" style=\"width: 700px;\"/>\n", "\n", "Web page hits at USGS/NEIC during 24 hours after the earthquake:\n", "\n", " - peak rate: **3,892 hits/second**\n", " - **68 million hits** in the 24 hours after the earthquake\n", "\n", "<img src=\"http://www.geophysik.uni-muenchen.de/~megies/.iris/.mtcarmel_figure1.jpg\" alt=\"USGS/NEIC web page hits\" style=\"width: 500px;\"/>\n", "\n", "Some links:\n", "\n", " - http://earthquake.usgs.gov/earthquakes/dyfi/events/us/2008qza6/us/index.html\n", " - http://earthquake.usgs.gov/earthquakes/eqinthenews/2008/us2008qza6/#summary\n", " - http://srl.geoscienceworld.org/content/79/6/830.extract\n", " - http://srl.geoscienceworld.org/content/82/5/735.short"]}, {"cell_type": "code", "execution_count": null, "metadata": {}, "outputs": [], "source": ["%matplotlib inline"]}, {"cell_type": "markdown", "metadata": {}, "source": ["### Use the search on the [ObsPy docs](http://docs.obspy.org/) for any functionality that you do not remember/know yet..!\n", "### E.g. [searching for \"filter\"](http://docs.obspy.org/search.html?q=filter)..."]}, {"cell_type": "markdown", "metadata": {}, "source": ["## 1. Download and visualize main shock\n", "\n", "Request information on stations recording close to the event from IRIS using the [`obspy.fdsn Client`](http://docs.obspy.org/packages/obspy.fdsn.html), print the requested station information."]}, {"cell_ty
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