john's picture

Tajikistan-Afghanistan-Pakistan Earthquakes

Recently there have been a series of M>6 earthquakes in Tajikistan-Afghanistan-Pakistan, Central Asia.  We can use the hazard viewer to evaluate the risk, which appears to be quite high at this time.  A screenshot of the selected region is below, together with 3 recent M~4 earthquakes.

john's picture

Markets and Earthquakes

A couple of years ago, a New York Times story described new research that indicates financial markets bear remarkable similarities to earthquakes.  Well, we took this idea and ran with it, the result being Seismic Funds LLC.  Open Hazards serves as an advisor to the trading arm at Seismic Funds.  I am happy to report that in 2012, trading real money, the fund was up about +14.5% (before fees).  In 2013, the fund was up about +32% (before fees).  And so far year to date (YT

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Los Angeles Earthquakes

On June 2 a news item in the LA Times described a recent increase in the number of magnitude > 4 earthquakes in the Los Angeles area.  I thought I would take a look at the situation using the hazard viewer on this site.  We can start by defining the circular selection region.

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Today, June 1, is the First Day of Hurricane Season 2014

This is supposed to be an El Nino year, as the forecast below for October-December 2014 shows.  Forecast is from the International Research Institute for Climate and Society of Columbia University.  Wind shear in El Nino years tends to be higher than average, and inhibits the formation of tropical cyclones.

Steve's picture

Roman Holiday

If you have ever holidayed in Rome, probably you took a side trip to the Alban Hills, 15 miles south of the City.  The Alban Volcano Complex has been a get away spot for Romans for 1000s of years. Emperor Caligula took his mammoth ‘pleasure ship’ out for summer night spins around Nemi Lake in one of the Alban craters.  To escape city heat, Popes have retreated to their summer home at Castel Gandolfo above Albano Lake since 1700.

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Earthquake Hazard in the San Francisco Bay, California, Region

Given the recent interest in major earthquakes in the Pacific Northwest, it is interesting to re-examine the earthquake potential of the San Francisco Bay region.  In particular, we examine the probability of earthquakes having magnitude M>6 and M>7 in the most populated region around San Francisco.  The map below shows San Francisco bay, the latest WGCEP/UCERF2 earthquake fault map, and a rectangular selection region.  The figure was produced using the polygon selection with the Hazard Viewer.

john's picture

Earthquakes in Oklahoma

The Oklahoma Geological Survey and the US Geological Survey recently released a statement on the ongoing earthquake activity in that state.  They noted that the rate of earthquake activity has increased remarkably in the state, with 145 earthquakes having magnitude M>3 since January, 2014.  That currently makes Oklahoma the most seismically active state in the US.  Below we reproduce an image from that report.

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Magnitude 6.7 Earthquake Vancouver Island, April 23, 2014

The earthquake was near the Haida Gwai area, that has been the site of several large earthquakes recently.  A map of the region with the earthquake and a selection circle is below:

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Magnitude 7.5 Earthquake near Papua, New Guinea April 19, 2014

A strong earthquake occurred near Papua New Guinea a few hours ago on Saturday Apr 19 2014 at 06:27:59 GMT-0700 (PDT).  From the Hazard Viewer we can do a simple but rapid analysis.  The forecast from the Hazard Viewer was computed last night at midnight, a few hours prior to the earthquake.  The earthquake locations are shown below, with the bright red event being the M7.5 mainshock:

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Mexico Earthquake Magnitude 7.2, April 18, 2014

Two hours ago a magnitude 7.2 earthquake struck near Galeana, Mexico.  It shook both the nearest city of substantial size, Tecpan, as well as the capital of Mexico city.  The latter is located on an old lake bed and is subject to amplified shaking due to the thick layer of sediments.

From the Hazard Viewer, it can be seen that the earthquake struck in an area of elevated probability:


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