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Transportable Array


The Transportable Array (TA) is a gridwork of broadband seismic instruments that are being installed across the continental United States (see a map of TA stations that have been installed to date).  They are laid out in a rectangular array with approximately 75 kilometer spacing between stations stretching from Canada to Mexico and from the Pacific Ocean eastward.

Three-component, 40 samples-per-second data is broadcast to the internet by each active station.  The Array Network Facility (ANF) at UCSD in San Diego receives the data from the TA seismic stations in near realtime and reports on the Array's realtime state of health. The ANF then transmits data to the IRIS Data Management Center for archiving as part of the USArray Transportable Array (EarthScope) network.

The PASSCAL Instrument Center houses the Transportable Array Coordinating Office (TACO) and the Earthscope USArray Array Operation Facility (AOF). The TACO coordinates all siting, permitting, and construction of TA stations. The AOF houses, tests, and constructs much of the equipment used in TA stations. The AOF also coordinates the logistics of shipping seismic equipment to all regions of the United States.

To learn more about the specifics of contruction and installation of a TA station a website has been built to be a step by step guild on every aspect of the TA project. This website is made up of linkable objects and clicking anywhere on any page will lead to another page.  Clicking on an object will zoom into more detailed information about that object.  Clicking off any object will return to the previous, more general page.  Watch this 3-minute movie to learn how to get the information you're looking for on the TA Instrumentation website



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