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

Polar Programs

 

PASSCAL currently supports approximately 60 experiments per year worldwide, with 5-10% currently funded by the National Science Foundation (NSF) Office of Polar Programs (OPP). Polar projects commonly require a level of support that is several times that of seismic experiments in less demanding environments inclusive of very remote deployments (e.g. Tibet). In order to ensure OPP funded Antarctic projects the highest level of success, we have established a PASSCAL Polar Program and have secured funds from OPP to support new and ongoing experiments in Antarctica.

The primary focus of PASSCAL’s Polar support efforts are:

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General Information

Welcome to the EPIC General Information web pages. Here you will discover how to borrow EPIC equipment, learn about the equipment and services we provide, and browse past, current and future experiments scheduled to use our facility.

Borrowing Equipment Equipment Inventory Experiment+Schedules Training Shipping Information Governing Policies Meet the EPIC Standing Committee Contacts Visiting EPIC Acknowledgment, Citation, and Logos Employment at EPIC
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Seismic Community Responds to Virginia Earthquake in a Big Way

When the earth shook near Richmond, Virginia on August 23, 2011 at 1:51 PM EDT (17:51:04 UTC), millions of inhabitants of the eastern seaboard were surprised by the magnitude 5.8 tremor. The seismic community has responded in force, rapidly deploying dozens of new stations to record aftershocks of this rare event. (The largest previous earthquake in Virginia's history was a magnitude 5.9 event in 1897.)

This  image, provided by the National Park Service, is one of three or four "significant" new cracks in the Washington Monument. The picture was taken from a Park Service helicopter. The Monument is being closed to the public indefinitely.

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Governing Policies

A variety of policies govern the use of EPIC and EarthScope Flexible Array equipment, and the support provided by the EPIC. These policies are vetted by the EPIC Standing Committee and the USArray Advisory Committee (see http://www.iris.edu/hq/about_iris/governance for more information about EarthScope govenance and committee membership and charge). Links to EPIC policies are listed below:

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List of PASSOFT Applications

The 24 applications provided in the latest PASSOFT installation include the following.

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PH5: What is it?

 

 

PH5 is the recommended archival format for active source data sets.  EPIC has transitioned from SEG-Y to PH5, EPIC's implementation of the hierarchical data format, version 5 (HDF5) data model, as the preferred archival format for active source data sets.  The strengths of HDF5 made it an attractive model for an active source archival data format.

HDF5:

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Bighorn Arch Seismic Experiment: Results

In 2010, a group of seismologists deployed several hundred sensors across Wyoming and Montana as part of EarthScope's Bighorn Project and the Bighorn Arch Seismic Experiment (BASE). EarthScope/EPIC supplied instruments and expertise as part of this large effort, which included scientists from CIRES at University of Colorado Boulder(1), the Department of Geology at Colorado College(2), the Department of Geology and Geophysics at the University of Wyoming(3), and the Department of Geology and Geophysics at Texas A&M University(4). The Principal Investigators included Anne F. Sheehan(1), Megan L. Anderson(2), Eric A. Erslev(3), Kate C. Miller(4), and Christine S. Siddoway(2). William L. Yeck(1), the lead graduate student from UC Boulder, provided analysis and support included in this article. Additionally, numerous students contributed to the effort. The team's recent publication, "Structure of the Bighorn Mountain region, Wyoming, from teleseismic receiver function analysis: Implications for the kinematics of Laramide shortening," is available from AGU Publications (Full, PDF).

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Ensemble Cast Supports Socorro Magma Body Experiment

During February 2015, EPIC staff assisted Principal Investigators Sue Bilek, Rick Aster, Brandon Schmandt, and Lindsay Worthington with the installation of numerous single-channel nodes in conjunction with seven EPIC broadband stations (data) to image the Socorro Magma Body (SMB) beneath the Sevilleta National Wildlife Refuge in central New Mexico. 

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