Posts Tagged ‘ earthquakes ’

Negros Quake Animation in R

June 17, 2012
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Negros Quake Animation in R

Taken from a previous post in other website, maps below show the locations of epicenters and sequence of earthquakes that struck Negros last February 6, 2012. The bottom image is the animation these maps using animation package in R. Data was taken fr...

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Earthquake Density in the Philippines (2011-2012)

June 7, 2012
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Earthquake Density in the Philippines (2011-2012)

 Using the same data and package from my previous post, but minor tweak on the code, I produced the map below:

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R-NOLD 2012-05-23 05:48:00

May 23, 2012
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R-NOLD 2012-05-23 05:48:00

Mapping Global Earthquake using XML and MaptoolsEveryday the US Geological Survey (USGS) publish earthquake data (http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/quakes_all.html) all over the globe. Using XML and maptool packages of R I d...

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R-NOLD 2012-05-21 04:46:00

May 21, 2012
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R-NOLD 2012-05-21 04:46:00

Mapping Philippines earthquake data from January 2011 to January 2012 collected by PHIVOLCS using R ggplot package.I tried to recreate the earthquake map of the Philippines created using maptool and R plot function using ggplot2. Earthquake map ...

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Earthquakes

November 30, 2011
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Earthquakes

> data(quakes)> head(quakes) lat long depth mag stations 1 -20.42 181.62 562 4.8 41 2 -20.62 181.03 650 4.2 15 3 -26.00 184.10 42 5.4 43 4 -17.97 181.66 626...

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Earthquakes

November 30, 2011
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Earthquakes

> data(quakes)> head(quakes) lat long depth mag stations 1 -20.42 181.62 562 4.8 41 2 -20.62 181.03 650 4.2 15 3 -26.00 184.10 42 5.4 43 4 -17.97 181.66 626...

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The Global Earthquake Desktop

November 25, 2011
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The Global Earthquake Desktop

One of the first things I do over coffee each morning is scroll through the USGS earthquake RSS feeds.  In the era of free data and open source computing I asked myself, "Wouldn't it be better to visualize all of the earthquakes around the world r...

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What the frack? Does hydraulic fracturing lead to increased earthquakes?

November 8, 2011
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What the frack?  Does hydraulic fracturing lead to increased earthquakes?

Earthquakes are normal occurrences along the boundaries of major plate margins, such as along the San Andreas fault system of California,  and are less common within plate interiors.  Try telling that, however, to the citizens of Oklahoma who...

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Circular or spherical data, and density estimation

March 17, 2011
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Circular or spherical data, and density estimation

I few years ago, while I was working on kernel based density estimation on compact support distribution (like copulas) I went through a series of papers on circular distributions. By that time, I thought it was something for mathematicians working ...

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