Geological officials said Wednesday they are considering putting a
seismometer in a Wisconsin city where a small earthquake was recorded
last week after strong booms and rumblings shook residents once again. Clintonville
police received 65 calls Tuesday night between 10:35 p.m. and 11:40
p.m. and another 19 calls came in between 3:25 a.m. and 11:30 a.m.
Wednesday, Clintonville Police Chief Terry Lorge said. Several of the
booms were heard by officials at City Hall, he said.

Residents
reported the most recent booming as the worst yet, city administrator
Lisa Kuss said. Most of the previous calls came in from March 18 to
March 20, when a 1.5-magnitude earthquake was detected by the U.S.
Geological Survey. The calls had since decreased. Jordan
Pfeiler, 21, said the booms had been getting weaker so Tuesday night's
big boom — followed by smaller ones into Wednesday morning — really
scared her. "People
started living their lives again because they were getting little," she
said. "After last night I don't know what people are doing." The
U.S. Geological Survey was unable to detect anything Tuesday night and
is considering putting a seismometer in Clintonville to get a better
reading of potential activity, said Geophysicist John Bellini, who is in
Golden, Colo. He
said he suspects it's a swarm of small earthquakes. That's because the
agency has ruled out human-made causes, there was one detectable
earthquake and multiple events are occurring.While
such events are unusual in Wisconsin in recent history, Bellini said it
happens several times a year in different parts of the country. He said
quake swarms last anywhere from a few days to a few months. He said
experts know about the larger ones that are near populated areas with
seismometers, but they likely also happen in places without equipment or
people to feel them. - Post Crescent.
After more than a week of strange sounds and sensations – the residents
of “normally quiet” Clintonville, Wisconsin hope to get more answers.
They have already been stunned to learn that a 1.5 magnitude earthquake
caused at least some of the vibrations, but they continue. A team of scientists is preparing to install seismometers in the community 40 miles west of Green Bay. The delicate devices register “shifts” in the earth. WUWM Environmental Reporter Susan Bence spoke with a few of the experts
hoping to narrow down the location and source of the continuing seismic
activity. Greg Waite is on the road when I reach him. He figures the trip from his lab in Michigan to Clintonville will take about four hours. He is less sure what is causing the seismic activity in the small Wisconsin town. It’s not that Waite doesn’t know his earthquakes. The Michigan Tech assistant professor of geophysics spends most of his time studying them. “Well actually most of my work is in other countries, in Central
America and South America, I study volcanic seismicity mostly,” Waite
says. Something as small as Clintonville’s 1.5 “rumbling” would normally be a
blip on a monitor, but Waite’s interest was piqued by the continuing
“swarm” of seismic activity. “It’s so rare to have earthquakes in the upper Midwest,” Waite says.
Waite will not only monitor ground vibration, he’s hoping special
microphones will pick up the low frequency sounds residents are
reporting – the creaks, cracks and rumbles. “It’s rare that there are good recordings of those sounds, so I thought
it would be a good opportunity to try to collect good data to get a
better of that phenomenon,” Waite says. Everything Waite’s equipment detects will be funneled to U.S.
Geological Survey scientists in Golden, Colorado. Dr. Harley Benz is
shipping is “cell modums” to Clintonville, to link Waite’s system with
the Colorado facility. “It’s kind of a fancy cell phone in that it’s always on and it’s always
transmitting data. So it connects to cell towers and so we can take
data straight out of these seismograph stations. And if people feel
something or hear something, we can look at the data immediately and
figure out what it might have been,” Benz says. Benz echoes Greg Waite’s words - that a quake as small as
Clintonville’s would normally go unnoticed, but the mystery of what is
happening there, is worth investigating. - WUVM.
WATCH: Mysterious booms return to Clintonville louder than before.