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Archived News

Here is a listing of PASSCAL News items from over 6 months ago. If you want to look up something newer, you should check Recent News.

IRIS/PASSCAL profiled in the Socorro Newspaper

 

The August 16th, 2018 edition of Socorro's El Defensor Chieftain featured a cover story describing the IRIS/PASSCAL Instrument Center 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 – IRIS/PASSCAL for short – the largest facility of its kind in the world. 

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"White Wanderer" Exhibit in Chicago joins Seismology and Art

An exhibit sponsored by the Natural Resources Defense Council has combined the work of University of Chicago seismological scientist Doug MacAyeal of with the art of Luftwerk, to produce an artistic rendition of the seismic "sounds" produced by climate change in the Antarctic. The exhibit opened with a live demonstration of seismic data acquisition, using instruments provided by IRIS/PASSCAL. The project was a collaboration with NRDC, with additional help from the University of Chicago, and was on display at Two Riverside Plaza, Chicago IL from Sept 7th – Oct 1st. 

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Pre-AGU PASSCAL Users PH5 Workshop 2017

Late-stage graduate students! Postdocs! Researchers and faculty!

IRIS PASSCAL Instrument Center would like to invite you to register for our PASSCAL Users Workshop to be held on Sunday December 10th, 2017 (the day before the beginning of the AGU Fall meeting). 

This year's workshop will be a hands-on training session covering the complete process to build a PH5 archive, starting from 'raw' data and moving to a complete archive ready to be shipped to the PIC. We will provide a standard data set for the hands-on exercise so that participants can familiarize themselves with procedures for building and verifying a PH5 archive from raw data.

Transportable Array demonstrates its new drilling rig and sensor emplacement routine for PASSCAL.

March 7th, 2017

With the expansion of TA Alaska into even more remote regions of Alaska and Canada it was necessary to develop and construct an extremely lightweight, high performance helicopter portable air rotary drill weighing less than 1700 lbs and capable of installing a 6” steel casing 2.7m deep in any type of ground including solid rock, frost shattered overburden, cobbles and frozen soils.  Based on these parameters, a custom drill rig system was commissioned and tested by IRIS for specific use on the project.  At PASSCAL we had the opportunity to be among the first testing locations for the newly constructed third generation Purple Drill.  Ryan Bierma, and Max Enders along with Bob Busby from IRIS and Mike Lundgren  from Lundgren Systems (rig developer) operated the rig, and then Ryan and Max demonstrated a mock installation of an STS-5A seismic sensor at the test site behind PASSCAL in Socorro, NM.

 

December 31 2016 Leap Second

Leap Second's effect on PASSCAL RT-130 and Q330

Summary:

Q330:

Data time starting at 2017:001:00:00:00 is +1 second from truth for 1-2 minutes (seen in controlled tests) until a clock correction, followed by a gap of 2-40 seconds per channel depending on sample rate.

RT-130:

Data time starting at 2017:001:00:00:00 is +1 second from truth for 15min - 9:42hrs (seen in controlled tests) until a clock correction. Some data (~6secs in tests) around the time correction is mistimed, sometimes 11 years in the future, or missing.

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