Wednesday, September 20, 2017

Did California's small earthquakes cause Mexico's big one?

[USA Today] A series of earthquakes plagued Southern California in the past 30 days. Then on Tuesday, a 7.1-magnitude temblor rocked Mexico City. Does this mean The Big One could hit the Golden State next? Experts say no, reiterating that earthquakes happen without warning and it is still impossible to predict the big one. "(Magnitude 3) quakes happen somewhere in the world every few mins. 6 in SoCaL last week. No connection to Mexico," seismologist Lucy Jones said in a barrage of tweets following Mexico's earthquake. It was centered near the Puebla state town of Raboso, about 76 miles southeast of Mexico City. At least 226 were killed in the earthquake, which occurred exactly 32 years after the 1985 quake that ravaged the city. The quake followed the Sept. 7 magnitude 8.1 earthquake that destroyed a large part of Juchitan and killed dozens of people.
Tuesday's earthquake was preceded by about 12 hours by a magnitude 3.6 earthquake that was centered west of Los Angeles in Westwood.  In the past 30 days, there have been about 10 small earthquakes near the Coachella Valley. They were as far southeast as the Salton Sea's southern end and as far northeast as Big Bear. Read More

New Zealand Rocked by Strong 6.1 Magnitude Earthquake: New Zealand has been rocked by a 6.1 magnitude earthquake which struck southwest of Invercargill, followed by a 5.1 magnitude quake northeast of Seddon. The quake caused 'moderate shaking' reported Geonet. Initial classifications called it a strong quake, hitting 585km southwest of Invercargill at a depth of 10km. Tremors may have been felt in Balclutha, Gore, Invercargill, Lumsden, Roxburgh, Te Anau and Tuatapere, while the Seddon quake was felt strongly in Wellington. New Zealand authorities have issued a reminder to 'drop, cover, and hold' in the event of an earthquake. Read More

Magnitude 5.7 hits Eastern Taiwan: A magnitude 5.7 earthquake struck eastern Taiwan at 10:29 p.m. Wednesday, creating intensity-five jolts in Taitung County's Changbin and intensity-four quakes in Guangfu, Hualien County, according to the Central Weather Bureau. The bureau data showed that the epicenter of the temblor lied at a depth of 15.3 km in the Pacific Ocean 74.6 km east-southeast of the Hualien City Hall. Read More