Here are some of the articles that have been recently posted to the PASSCAL website:

Sercel L-28-3D High Frequency Sensor

  Salient Features:  This 3-channel sensor has a frequency of 4.5Hz, is critically damped at .707 and has a sensitivity of 30.4 V/m/s.  Used for (but not limited to) active source (land and off-shore excitations), glacial movements, local earthquake and aftershock studies. Manufacturer Documents  http://www.sercel.com/products/Lists/ProductSpecification/Geophones_brochure_Sercel_EN.pdf

Download the Brochure to obtain information about the L-28 geophones.

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Getting It Perfect at OIINK

Gary Pavlis and Terry Stigall of Indiana University are proud of their geophysics students. The students were helping them to deploy some new direct-burial stations with Trillium broadband sensors for the OIINK project (a.k.a. SDYNAC, "Structure and Dynamics of the North American Craton"), and Terry directed them to get them perfectly level and lined up to north accurately. The students outdid themselves, and helped to make this a superb installation.

These students are from Gary Pavlis' Applied Geophysics class. They spent a weekend installing stations for the OIINK project.

Clockwise from upper right: Tyler Merrell, Steven Downey, Crystal Wespestad, and Brenden Fenerty.

Photographs courtesy Terry Stigall.

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NSF/EarthScope/EPIC Supports Chile RAMP

The National Science Foundation, using its Rapid Response Research (RAPID) funding mechanism, is supporting a project to collect an open community dataset from a portable seismograph deployment in an aftershock study following the magnitude 8.8 earthquake that occurred off the coast of Chile on February 27, 2010. The EarthScope Consortium, on behalf of its Member Institutions, will work with scientists from US universities and the University of Chile to deploy 60 broadband seismic instruments to record aftershocks for approximately six months. This community-wide coordinated approach will provide the best quality dataset that can be utilized immediately by a wide range of researchers from around the world.

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EPIC Student Employees

Just who are those energetic students padding the halls of EarthScope/EPIC? Here are our student interns and emergency hires.

 

 

 

Mia Cordova

Warehouse Lab Tech

 

 

 

Tyler Davis

Warehouse Lab Tech

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SEIS-UK joins EarthScope/EPIC on Support Effort for Antarctic Projects

 

 

SEIS-UK Director Dr. Alex Brisbourne accompanies the staff of the EPIC  to gain experience working in polar environments while supporting the POLENET and Whillans Ice Sheet projects for a month and a half during this year's field season.

Nature Magazine Marks Transportable Array Milestone

A November 5th article in the prestigious journal Nature discusses a major milestone in the Transportable Array project. In her article "US seismic array eyes its final frontier," Nature's Alexandra Witze writes

On Maine’s rugged coast, just north of the tourist town of Boothbay, an underground seismometer is listening for earthquakes. Engineers activated it on 26 September, completing the US$90-million Transportable Array, an ambitious effort to blanket the contiguous United States with a moveable grid of seismic monitors ... "As the array has moved, the whole picture of what’s under North America has gotten much sharper," says Andy Frassetto, a seismologist at the Incorporated Research Institutions for Seismology (EarthScope) in Washington DC, which operates the stations.

Batteries for Year Round Polar Programs

Rechargeable batteries:

Rechargeable batteries are used for projects using solar and/or wind charging systems. EPIC's Polar Group has used SunXtender AGM batteries by Concord succesfully for many deployments. These batteries, aside from being reliable, offer several advantages. They are sealed and non-spillable, which makes then safer and easier to handle in the field; they have a low self discharge rate, which is important for a low power system, with extended periods of time between charges (arctic conditions); and they are exempt of DOT HazMat requirements (49 CFR Section 173.159) provided that they are shipped in their original package or in a package that satisfies the requirements of 49 CFR 173.159(d).

Geode Datalogger

GEODE 24-CHANNEL IN-FIELD SEISMOGRAPH.

System consists of one 24-channel Geodes, with two built-in high-speed connections to interface with other Geodes and a PC-compatible controller or the StrataVisor NZ seismograph.

Suitable for reflection, refraction, downhole, crosshole, surface wave, and tomography surveys, and seismic monitoring.

EarthScope/EPIC profiled in the Socorro Newspaper

 

The August 16th, 2018 edition of Socorro's El Defensor Chieftain featured a cover story describing the EarthScope/EPIC located at New Mexico Tech. Reporter John Larson's piece says "Tucked away on a hilltop in the backyard of Tech’s campus is the Incorporated Research Institutions for Seismology Portable Array Seismic Studies of the Continental Lithosphere Instrument Center – EarthScope/EPIC for short – the largest facility of its kind in the world. 

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