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Dude, What’s Eating My Hard Disk?

Dude, What's Eating My Hard Disk?

Like our closets (well hers, not mine) and mid sections (…), hard disks fill up with time. For the seismologist working with an automated processing system, the major culprits are often: 1. Continuous data 2. Log files 3. Automatically generated image files (ShakeMap, helis, sgram) … Numbers […]

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What’s Inside a Geophone?

What's Inside a Geophone?

The geophone is an ingenious but simple device common to most seismic instruments. In this Seismo Guys video, I cut a geophone open and take a look inside: For pictures of the insides of a geophone, see the What’s Inside a Geophone photos page –Branden

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Data QC on the Moon

Data QC on the Moon

Data Quality Control – A new blog series discussing the Why’s, What’s and How’s of Data Quality Assessment.  First the Why: A planetary body shakes and this signal is recorded for later analysis.  But getting from ground motion to its digital representation is fraught with potential issues all along the way: all […]

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Advertised and Effective Bits: Don’t Be Fooled

Advertised and Effective Bits: Don't Be Fooled

Hello from the Seismo Guys in Panama. Today we open a discussion on 24-bit digitizers. Nowadays, seismologists are OBSESSED with 24-bits. But we find that few seismologists understand the reason for their obsession and even fewer know the right questions to ask manufacturers. We hope the Seismo […]

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“Depth 10 km” What gives?

"Depth 10 km" What gives?

Automated systems often declare seismic events with fixed depths. In SeisComP, for example, scautoloc fixes the depth at 10 km when it determines that the depth resolution is poor. What gives? Well, automated processing is all about the P’s: P distribution, P proximity and P density. Robust picking […]

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What’s inside an STS-2 Seismometer? Ants!

What's inside an STS-2 Seismometer? Ants!

I am starting a new section on the OSOP page. It will be called What’s Inside. It will mostly be seismometers but surely not limited to that. You just never know that the things you learn dissembling that Mikrotik Groove radio will come in handy when you […]

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Too Many Mini-SEED Files?

Too Many Mini-SEED Files?

Good day!  I’m a software guy who’s been busy slaying seismology problems on and off since the mid ‘80’s.  As a Seismo-Guy blogger, I’ll be mostly addressing issues related to software, programming and data. For the first post, something lightweight that falls into the “Did You Know?” […]

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All seismicity is local

All seismicity is local

I have been preparing for a presentation that I have been asked to give at the other private seismic observatory in this hemisphere. Observatorio San Calixto of La Paz Bolivia is celebrating their 100th birthday. Gotta love those Jesuits. I hope OSOP will do the same some […]

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Python bindings for Earthworm

Python bindings for Earthworm

Hi all: Buenos días. I’m a software developer at OSOP SA. Last year I worked on a number of modules that enable OSOP to access (read/write) Earthworm’s shared memory rings from a Python application. We have chosen to release the sources under GPL v3.0. We hope that […]

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My $70,000 thermometer

My $70,000 thermometer

For those interested in studying the earth modes, teleseismic events, volcanic slugs and other “VLP” events, properly insulating your broadband against thermal fluctuations is easy. Let’s take the Nanometrics Trillium Compact as an example. This beer can-sized broadband unit has little mass and no thermal insulation. When […]

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Welcome to The Seismo Guys Blog!

Welcome to The Seismo Guys Blog!

Seismology secrets revealed. Subscribe to encounter industry secrets, seismic news, serious and not-so-serious content. May you be enlightened, entertained and contribute often! Suggest new topics by sending us a request at [email protected]   Secretos sobre sismología revelados. Siguenos para encontrar secretos de la industria, noticias sobre sismicidad, […]

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