EarthScope Primary Instrument Center

[1] The facility provides instrumentation and support services for seismology experiments around the world, as well as those for the National Science Foundation and the U.S. Department of Energy.

It was originally the Program for Array Seismic Studies of the Continental Lithosphere (PASSCAL) instrument center, an IRIS (Incorporated Research Institutions for Seismology) facility program dedicated to seismographic data collection associated with research deployments using highly portable seismology instrumentation.

[3] EPIC was formerly the IRIS Program for Array Seismic Studies of the Continental Lithosphere (PASSCAL) Instrument Center.

Starting in 2005, the following facilities were added to PASSCAL from what was then EarthScope (2003–2018), a preceding organization to Earthscope Primary Instrument Center (EPIC):[5][6] In 2006, a polar support group provided instrumentation and support for portable seismic experiments to projects in the polar regions.

Examples are of polar projects that PASSCAL had assisted on are the following:[5] Later, IRIS (Incorporated Research Institutions for Seismology) merged with UNAVCO (University Navstar Consortium) on January 1, 2023, to form Earthscope Consortium, 20 years after the separate organization of Earthscope (2003–2018) had been created.