...six weeks ago but did not report it.Columbia County Emer gency and Operations Division Director Pam Tucker said that a seismologist ruled out an earthquake and that there was no quarry blasting during the dates and times reported. "It's crazy," Tucker...

...tremor struck at 1:36 a.m. Sunday about 6 miles northwest of Napa near the small town of Yountville -- an area that seismologists hadn't even mapped for faults. "As far as we know now, it's a previously unknown fault," said Pat Jorgenson, a...

...of the 7.1-magnitude Hector earthquake still fresh, seismologists in Southern California are shaking up the ground themselves...6 Tuesday morning and another of 4.0 Tuesday night. Seismologists said three aftershocks of 5.0 or greater occurred shortly...

...Changes in groundwater levels cause Los Angeles to rise and fall by more than 4 inches every year, complicating the work of seismologists studying the risk of earthquakes. The human pumping and recharging of drinking water cause the spongelike ground to breathe...

...Reitz has installed all over California in the past several months. "I can almost do it in my sleep now," says Reitz, a seismologist with the California Department of Conservation Division of Mines and Geology. Just 6 inches tall and a couple of feet wide...

...could cause severe damage to the Aiken-Augusta area, some seismologists said. "The potential for damage is really a repeat of...have more potential to cause damage, said Tim Long, a seismologist at the Georgia Institute of Technology in Atlanta. Although...

...Aiken County to Augusta experienced a sonic boom - possibly from a plane - around 9:45 a.m., said Don Stevenson, a seismologist at Savannah River Site. The sound was recorded by seismographs at the site. "We're confident it's not an earthquake...

...area said they had not been blasting, Tucker said, so she checked with a seismologist Wednesday morning to see if there had been an earthquake detected."The seismologist just notified me that after checking his equipment (that) there was no...

...Emergency Services Director Pam Tucker said.The temblor was not listed on national earthquake monitors, but was confirmed by a seismologist at Savannah River Site, she said."This would explain the loud boom and shaking that many residents felt," she said...

...scale, according to seismologists at the University of...Edgefield and Modoc, USC seismologist Dr. Pradeep Talwani said. Georgia Tech seismologist Tim Long said that...structural damage, said seismologist John Minsch of the...