Earthquake Detection
Earthquakes, even if they were thousands of miles away, did cause strong enough movements in the magnets to negatively affect the beam quality and even disrupt it. Therefore tiltmeters were installed on Tevatron's magnets to monitor minute movements and to help identify the cause of problems quickly. The first known earthquake to disrupt the beam was the 2002 Denali earthquake, with another collider shutdown caused by a moderate local quake on June 28, 2004. Since then, the minute seismic vibrations emanating from over 20 earthquakes were detected at the Tevatron without a shutdown, like the 2004 Indian Ocean earthquake, the 2005 Sumatra earthquake, New Zealand's 2007 Gisborne earthquake, the 2010 Haiti earthquake and the 2010 Chile earthquake.
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“Through the din and desultoriness of noon, even in the most Oriental city, is seen the fresh and primitive and savage nature, in which Scythians and Ethiopians and Indians dwell. What is echo, what are light and shade, day and night, ocean and stars, earthquake and eclipse, there? The works of man are everywhere swallowed up in the immensity of nature. The AEgean Sea is but Lake Huron still to the Indian.”
—Henry David Thoreau (1817–1862)