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Paper Seismograph

Paper Seismograph

DENSITY MATTERS SHORT PERIOD SEISMOMETERS IMPROVE SPEED & ACCURACY For as long as seismologists can remember They have spent fortunes on Ever-broader broadband seismometers. This drained budgets and kept coverage low. No longer. With the newest version of the Darien strong motion seismometer, You can install 50 […]

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Visit us at AGU!

Visit us at AGU!

Hi all: Visit the Seismo Guys next week at AGU. Ángel, Nicholas and Branden can be found at the OSOP Booth (#506) in front of Google. Richard will be at Nanometrics. We hope to see many of you there! –Branden

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A noble attempt at earthquake prediction

A noble attempt at earthquake prediction

Hello all. OSOP is very excited to announce the development of a new addition to our early warning system. Our new sensors will not only be able to locate and measure the magnitude of events but we are testing their ability to predict events before they occur. […]

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What’s inside a Lennartz 3D-Lite

What's inside a Lennartz 3D-Lite

“PLEASE, BY ALL MEANS RESIST THE TEMPTATION OF OPENING THE SENSOR! As we have stated previously, there are (very literally!) no user serviceable parts inside, and you will only make things worse. Once the sensor has been opened, the average user is unable to reseal the sensor […]

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The Mother of All Seismometers

The Mother of All Seismometers

Last week Richard and I traveled to Martinique for a meeting of a Caribbean seismic and tsunami monitoring group (the CARIBE-EWS WG1). The planning meeting was led by Jean-Marie Saurel of the Martinique Volcano Observatory (OVSM). After the meeting Jean-Marie invited us to visit the observatory. And […]

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scwfparam versus gmew

scwfparam versus gmew

When it comes to generating shake maps with the USGS ShakeMap program there are two main ways to get the job done: 1) Earthworm’s gmew + localmag modules; or 2) SeisComP’s scwfparam module. Last week a client asked me which I recommended. I responded that though both […]

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Those Pesky Earthquakes

Those Pesky Earthquakes

A quick post on some recent earthquake news you may or may not have heard about. This past week it was predicted that the West Coast of the US would be suffering a major earthquake yesterday, of magnitude 9.7 to be exact.  As we all know, seismologists […]

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hubs, switches, routers

hubs, switches, routers

I was asked to take a look at a wireless seismic network that was slow. The network had about 30 nodes. Several of the nodes were configured as access points, several as backbones and all of them in bridge mode. I suspect that most radios in the […]

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SeisComP Tricks: The Poor Man’s Focal Mechanism

SeisComP Tricks: The Poor Man's Focal Mechanism

SeisComPers: Since installing TOAST on our new Tsunami modelling server and the SeisComp Moment Tensor module (scmt), I have been experimenting a lot with focal mechanisms. If you have not upgraded your SeisComP to the professional version, the free version still allows you to play around. Here […]

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What’s inside a 1 HZ L4 geophone?

What's inside a 1 HZ L4 geophone?

Well, we all know what is inside a geophone, coils and magnets. Here is a look at the insides and a little movie of what I am pretty sure is a Mark Products L4. The pictures and video speak for themselves. The video: Link: What’s inside a […]

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Tweets outrun quakes

Tweets outrun quakes

Richard Allen opens his paper in Science, Transforming Earthquake Detection?, by observing that “Earthquake-related Twitter messages can outrun the shaking…”: In his article, Richard provides us with a glimpse into what the future of seismology could look like. The propects of integrating Twitter streams and data from […]

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Redefining how we feel the world

Redefining how we feel the world

Ever wonder how big a magnitude 5 earthquake really was, or ponder over how much energy a magnitude 3 quake released? Well I am not saying I have the answers but I did construct this table relating joules released by varying magnitude earthquakes to more ‘tangible’ things. […]

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NPR asks some pretty provocative questions about earthquakes

NPR asks some pretty provocative questions about earthquakes

Bravo NPR! The press might have a long history of offering the public some pretty screwy analyses of recent earthquake activity, blowing things out of proportion and generally misunderstanding the fundamentals but today’s “Morning Edition of NPR: Can A Big Earthquake Trigger Another One?” knocks the ball […]

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Short Period Sensors Improve SeisComP Performance (LARGE N!!!!)

Short Period Sensors Improve SeisComP Performance (LARGE N!!!!)

Yesterday was an epic day for automated event detection throughout Central America. Over the years, Angel and I have installed SeisComP’s at nearly every geophysical institute from Southern Mexico to the Colombian border. We spend a lot of time with clients tuning their SeisComPs to ensure that […]

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Guatemala shares broadband data with IRIS

Guatemala shares broadband data with IRIS

Estimados: Buenos días. Durante esta semana OSOP trabajó conjúntamente con INSIVUMEH para compartir los datos al dominio público de las cinco (5) estaciones de banda ancha de la Red Sísmica Guatemala hacia IRIS-DMC. Los sensores de movimiento fuerte y débil ahora se encuentran disponibles para obtener su […]

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The Ultimate Building Inspection

The Ultimate Building Inspection

Why wait for an earthquake to test building guidelines, construction techniques and retrofit technology when you can simulate earthquakes on an enormous shake table so MASSIVE NASA could launch a space ship from it? Don’t be fooled, this is no launch pad: You are looking at the […]

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GPS versus NTP timing- splitting hairs?

GPS versus NTP timing- splitting hairs?

If not, can someone help me better understand how accurate digitizer sampling has to be? I have been working on making a seismometer that meets a bunch of specs and one of the specs is that the timing accuracy of the instrument was to be sub millisecond. […]

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Meta-Data QC – Response Files Part 2

Meta-Data QC - Response Files Part 2

In my last QC-related post, I looked at response files and the particular problem of supplying an incorrect gain.  But as we know, it’s not just the gain that can be wrong in a response file, other culprits abound. In this post, I’ll look at two other […]

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Volcanic Scream

Volcanic Scream

Volcanoes produce a wide variety of seismic signatures of which harmonic tremor is easily the most famous. Research into another popular signature, Drumbeats (aka repeaters or multiplets), has been in vogue since seismometers at Mount Saint Helens started recording them by the thousands last decade. In a […]

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SeisComP & Seisan Updates Now Available!

SeisComP & Seisan Updates Now Available!

Hi all: Good news. In addition to the ShakeMap update, new versions of SeisComP and Seisan are now available for download. SeisComP SeisComP Version Seattle 2013.200 can be downloaded here. Highlights: As if SeisComP was not fast enough already, it just got turbo-charged with the new Virtual […]

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ShakeMap Update r687 Released!

ShakeMap Update r687 Released!

Hi all: Bruce Worden recently announced a new ShakeMap release. The Seismo Guys tip their hats to Bruce et al. for continuously improving ShakeMap and for their rapid-response to inquiries at shake-dev. In the past 12 months Bruce has announced 4 revisions (!) (r620,r623,r639,r687), and as the […]

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The Virtual Seismic Community

The Virtual Seismic Community

When you need help, you just need help! Here are a list of seismic software mailing lists (in alphabetical order). “The [seismic community] is greater than the sum of its parts.” -Aristotle. So contribute often! AQMS Antelope Earthworm– Questions on the Winston Wave Server or Swarm? Send […]

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Understanding flows where artistic energy goes

Understanding flows where artistic energy goes

Seismo Guys (and gals): Big data has been big media this year- through our drones, mobile devices and other gadgets we are producing an epic amount of data. What are we to do with all of this information? How are we to use it to improve our […]

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Seiches: Panama Canal & Norwegian Fjords

Seiches: Panama Canal & Norwegian Fjords

After the great tsunami of 2004, much-needed new attention was placed on the destructive force of large earthquakes, especially those capable of producing large tsunami events.  As a result of this increased awareness, many projects were begun to address the lack of tsunami warning systems around the […]

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