"" Occupational Safety And Health For Engineers: Mexico's earthquake

Saturday 9 September 2017

Mexico's earthquake

People gather on a street in downtown Mexico City during the quake.

Mexico Earthquake, Strongest in a Century, Kills Dozens
By PAULINA VILLEGAS, ELISABETH MALKIN and KIRK SEMPLE
SEPT. 8, 2017
JUCHITÁN DE ZARAGOZA, Mexico — Thousands of homes in this city were severely damaged. Half of the 19th-century city hall, with its 30 arches, collapsed. The main hospital here was so devastated that staff members evacuated patients to an empty lot and worked by the light of their cellphones.
By the time the earthquake’s tremors finally faded, at least 36 people in Juchitán de Zaragoza were dead.
“It’s a truly critical situation,” Óscar Cruz López, the city’s municipal secretary, said Friday. “The city,” he said, and then paused. “It’s as if it had been bombed.”
Over all, the earthquake — the most powerful to hit the country in a century — killed at least 61 people in Mexico, all of them in the southern part of the country that was closer to the quake’s epicenter off the Pacific Coast.
The earthquake, which had a magnitude of 8.2 and struck shortly before midnight on Thursday, was felt by tens of millions of people in Mexico and in Guatemala, where at least one person died as well.
In Mexico City, the capital, which still bears the physical and psychological scars of a devastating earthquake in 1985 that killed as many as 10,000 people, alarms sounding over loudspeakers spurred residents to flee into the streets in their pajamas.
The city seemed to convulse in terrifying waves, making street lamps and the Angel of Independence monument, the capital’s signature landmark, sway like a metronome’s pendulum.
But this time, the megalopolis emerged largely unscathed, with minor structural damage and only two of its nearly nine million people reporting injuries, neither serious, officials said... read more



Read more...
Mexico's earthquake...leaves dozens dead
(CNN)At least 61 people have died after the most powerful earthquake to hit Mexico in a century struck off the southern coast.
The magnitude 8.1 quake, which was felt as far as Mexico City and Guatemala City, was registered off Mexico's southern coast just as heavy rains from Hurricane Katia lashed the east. The epicenter was in the Pacific Ocean, some 600 miles (1,000 kilometers) southeast of the capital and 74 miles (120 kilometers) off the coast.
What is earthquake...
(1) a sudden and violent shaking of the ground, sometimes causing great destruction, as a result of movements within the earth's crust or volcanic action.
Synonym s: earth tremor, tremorshockforeshockaftershockconvulsion, seismic activity; Informal quake. "assessing the damage from the earthquake" (or) a great upheaval. “a political earthquake”
(2) An earthquake is a shaking of the ground caused by the sudden breaking and movement of large sections (tectonic plates) of the earth's rocky outermost crust. The edges of the tectonic plates are marked by faults (or fractures). Most earthquakes occur along the fault lines when the plates slide past each other or collide against each other.

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