CLINTONVILLE, Wis. (AP) — Clintonville now has four seismometers and four specialized sound sensors to help experts better understand the rumbling and booms over the last couple weeks.
City Administrator Lisa Kuss said Friday officials from Michigan Technological University borrowed the equipment to them temporarily. She says the readings will be fed to the National Earthquake Information Center through cell towers or the Internet.
Residents started reporting the sounds and shaking March 18 and experts detected a 1.5-magnitude earthquake about two days later. The reports started to die down until another big boom Tuesday night. There have been few reports since then.
Geophysicist John Bellini has said he suspects the events are a swarm of small earthquakes — which are not unusual across the nation and can last up to a few months.
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