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The ''Parkfield Interventional EQ Fieldwork'' also known as ''PIEQF'' 〔Mudie, Ella.("The Spectacle of Seismicity: Making Art From Earthquakes" ), Leonardo, Volume 43, Number 2, April 2010, pp. 133-139〕 can be seen as the seminal work of New Zealand born installation and performance artist D.V. Rogers. This early 21st century example of land art was installed temporarily in the remote township of Parkfield,〔Petray, Josh.("Seismic Land Art Comes to Parkfield" ). ''Paso Robles Gazette'', 25 September 2008.〕 Central California. A geologically interactive installation, this machine earthwork operated autonomously for a total of 91 days between 18 August and 16 November 2008. An earthquake shaking table was used in this seismic art intervention which was controlled by realtime reported Californian earthquakes detected by the US Geological Survey seismic monitoring network. ==Construction== Rogers selected the location of Parkfield for its significance as the most densely monitored earthquake region in the world. USGS Seismologist Andy Micheal originally suggested the location. Parkfield is also the home of the USGS Parkfield Earthquake Experiment〔("Parkfield Earthquake Experiment" ). USGS, 23 November 2009〕 and the San Andreas Fault Observatory at Depth (SAFOD). The region of Parkfield is located on the central section of the San Andreas Fault. The work consisted of installing a re-engineered earthquake shake table in a crudely excavated trench in a vacant field between the Parkfield Cafe and Parkfield CAL FIRE Station. Local contractors Frank Parlot and John Jamrog used a bulldozer and excavator to displace 125 cubic yards of earth on 9 June 2008 from the site. Rogers originally intended to have the installation operational between 28 June and 28 September. Extreme hot weather, natural dust devils, software development and financial constraints pushed the system switch on date to 18 August 2008. Software for the installation was developed by Dr. Geo Homsy (US), Stock Plum (NL), Mr. Snow (NZ), Andy Michael (USGS) and Peter Luka (US). The installation was two years in planning, culminating in 77 days of assembly, and resulted in 91 days of continuous seismic data connectivity. The seismic interface control system was shut down on 16 November 2008. Eight days later the shake table was removed from site. Rogers and local landowner John Varian filled in the excavated trench and repatriated the site. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Parkfield Interventional EQ Fieldwork」の詳細全文を読む スポンサード リンク
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