文件列表:

LICENSE (1080, 2015-03-13)
data (0, 2015-03-13)
data\earthquake_states.csv (18918565, 2015-03-13)
data\stateshapes (0, 2015-03-13)
data\stateshapes\arkansas (0, 2015-03-13)
data\stateshapes\arkansas\tl_2010_05_state10.dbf (660, 2015-03-13)
data\stateshapes\arkansas\tl_2010_05_state10.prj (165, 2015-03-13)
data\stateshapes\arkansas\tl_2010_05_state10.shp (294732, 2015-03-13)
data\stateshapes\arkansas\tl_2010_05_state10.shp.xml (21045, 2015-03-13)
data\stateshapes\arkansas\tl_2010_05_state10.shx (108, 2015-03-13)
data\stateshapes\kansas (0, 2015-03-13)
data\stateshapes\kansas\tl_2010_20_state10.dbf (660, 2015-03-13)
data\stateshapes\kansas\tl_2010_20_state10.prj (165, 2015-03-13)
data\stateshapes\kansas\tl_2010_20_state10.shp (217212, 2015-03-13)
data\stateshapes\kansas\tl_2010_20_state10.shp.xml (21040, 2015-03-13)
data\stateshapes\kansas\tl_2010_20_state10.shx (108, 2015-03-13)
data\stateshapes\oklahoma (0, 2015-03-13)
data\stateshapes\oklahoma\tl_2010_40_state10.dbf (660, 2015-03-13)
data\stateshapes\oklahoma\tl_2010_40_state10.prj (165, 2015-03-13)
data\stateshapes\oklahoma\tl_2010_40_state10.shp (353164, 2015-03-13)
data\stateshapes\oklahoma\tl_2010_40_state10.shp.xml (21046, 2015-03-13)
data\stateshapes\oklahoma\tl_2010_40_state10.shx (108, 2015-03-13)
data\stateshapes\texas (0, 2015-03-13)
data\stateshapes\texas\tl_2010_48_state10.dbf (660, 2015-03-13)
data\stateshapes\texas\tl_2010_48_state10.prj (165, 2015-03-13)
data\stateshapes\texas\tl_2010_48_state10.shp (940924, 2015-03-13)
data\stateshapes\texas\tl_2010_48_state10.shp.xml (21037, 2015-03-13)
data\stateshapes\texas\tl_2010_48_state10.shx (108, 2015-03-13)
notebooks (0, 2015-03-13)
notebooks\earthquake-state-analysis.ipynb (201955, 2015-03-13)
notebooks\make-state-maps.ipynb (4910015, 2015-03-13)
output (0, 2015-03-13)
output\ar-after.svg (390880, 2015-03-13)
output\ar-before.svg (383871, 2015-03-13)
output\ks-after.svg (290296, 2015-03-13)
output\ks-before.svg (285727, 2015-03-13)
output\ok-after.svg (561656, 2015-03-13)
output\ok-before.svg (462580, 2015-03-13)
... ...

# Earthquake Frequency Analysis and Maps *Quick link: [See the analysis](http://nbviewer.ipython.org/github/buzzfeednews/2015-03-earthquake-maps/blob/master/notebooks/earthquake-state-analysis.ipynb).* This repository contains: - Data and code used to analyze the decade-over-decade percentage change in earthquake frequency in each state in the United States. - Code to create SVG maps of earthquakes in four states: Arkansas, Kansas, Oklahoma, and Texas. The analysis and maps are referenced in the March 6, 2015 BuzzFeed News article, "[Midwestern States Are Having Big Earthquakes Like Never Before](http://www.buzzfeed.com/danvergano/midwestern-states-are-having-big-earthquakes-like-never-befo)." ## Data The [data/earthquake_states.csv](data/earthquake_states.csv) file contains information about all earthquakes of magnitude three or greater detected in the United States from 1975 through February 2015. The data were obtained via the [U.S. Geological Survey](http://earthquake.usgs.gov/earthquakes/search/) and preprocessed in [PostGIS](http://postgis.net/) to match each quake to the state containing its epicenter. The [stateshapes](data/stateshapes/) directory contains shapefiles for Arkansas, Kansas, Oklahoma, and Texas, [obtained from the U.S. Census Bureau](https://www.census.gov/cgi-bin/geo/shapefiles2010/main). ## Analysis Analysis for this project was conducted in an IPython notebook, the raw version of which can be found [here](notebooks/earthquake-state-analysis.ipynb). A rendered version of the notebook, which doesn't require installing or running any software, can be [viewed here](http://nbviewer.ipython.org/github/buzzfeednews/2015-03-earthquake-maps/blob/master/notebooks/earthquake-state-analysis.ipynb). The maps were also generated in an IPython notebook, the raw version of which can be found [here](notebooks/make-state-maps.ipynb). ## Output The code in [notebooks/make-state-maps.ipynb](notebooks/make-state-maps.ipynb) saves SVG maps to the [output](output) directory. There are two maps for each state: a "before" map, which contains all earthquakes of magnitude three or greater in the state between 1995-2004, and an "after" map, which contains all earthquakes of magnitude three or greater in the state between 2005-2014.

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