Rescue Work Continues after Mexico City Earthquake
The earthquake that struck near Mexico City Tuesday came exactly 32 years after an 8.0 magnitude quake hit the area.
The 1985 earthquake killed nearly 10,000 people.
Mexican officials say more than 200 people are confirmed dead following Tuesday's quake. Many buildings were damaged, while others were destroyed.
Rescue workers searched the capital and other areas on Wednesday in hopes of finding survivors.
Mexican Interior Minister Miguel Osorio Chong says his country's armed forces and police will continue working until they explore all possibilities of finding more people alive.
Civilians joined the search and rescue teams shortly after the quake. They used heavy machinery and, in some cases their hands, to clear away wreckage from homes, schools and other buildings.
Scientists say the earthquake had a magnitude of 7.1. The United States Geological Survey defines magnitude as a number that represents the relative size of a quake.
The quake's epicenter was near the city of Puebla, 120 kilometers southeast of Mexico City.
Ken Hudnut is a science adviser with the U.S. Geological Survey in Pasadena, California. He told VOA that the land on which the buildings were set up could be a reason for the collapses.
"Some of the buildings are on old lake beds, and that can amplify the shaking and cause the shaking to last longer, and that can make for more damage."
On Tuesday, U.S. President Donald Trump sent a message of support on Twitter. He wrote, "God bless the people of Mexico City. We are with you and will be there for you."
On Wednesday, Israel announced plans to send 70 people to Mexico to help with rescue efforts. A military spokesman said the team will help examine buildings to identify their damage and safety levels.
The earthquake hit less than two weeks after another quake killed more than 90 people in southern Mexico. The U.S. Geological Survey said the two quakes appeared to be unrelated.
The Earth's outermost surface is made up of large tectonic plates. As many as 20 tectonic plates cover the planet. They move slowly, sometimes sliding under one another. When that happens, earthquakes can take place.
Ken Hudnut says the two recent quakes in Mexico have similarities.
"So both of them occurred within the plate that's going down underneath the plate that is overriding up on top. And both of them had some extensional movement, which is unusual. The more typical thing is like the 1985 earthquake that did much more damage in Mexico City than either of these..."
I'm Ashley Thompson.
1.Rescue workers 救援人员
Rescue workers are digging through the rubble in search of other victims.
2.going down 停止；下沉
Small local stores are going down the drain.
3.made up of 由...组成
Food is made up of carbohydrates, proteins and fats.
4.lake bed 湖床
The heart of the city is built on landfill over an ancient lake bed.
1.They move slowly, sometimes sliding under one another. When that happens, earthquakes can take place.
take place 发生
A total solar eclipse is due to take place some time tomorrow.
Elections were postponed the day before polling was due to take place.
2.As many as 20 tectonic plates cover the planet.
As many as 多达
There are as many as 300 new products on show.
As many as ten-million children will have been infected with the virus by the end of the decade.
墨西哥官员表示，周二的地震发生后，经确认有200多人死亡 。多处建筑受损，有的建筑坍塌 。
地震发生后不久，民众也纷纷加入搜寻的工作中 。他们动用了重型机械，甚至徒手清理民居、学校和其他建筑的废墟 。
科学家指出，这次地震震级达7.1级 。美国地质调查局将震级定义为：能代表地震相对规模的数字 。
肯恩·哈德纳特（Ken Hudnut）是美国加州帕萨迪纳市地质调查局的科学顾问 。他对VOA表示，这些建筑下的地面可能是其坍塌的原因 。
周二，美国总统特朗普在推特上发声支援 。他写道，“愿上帝保佑墨西哥人民 。我们与你们同在，始终支持你们 。”
周三，以色列宣布向墨西哥派70人员协助援救工作 。军方发言人表示，这支援救小组将协助监测楼房，确定其受损程度和安全程度 。
该地震发生约两周前，墨西哥南部发生的一场地震导致90多人死亡 。美国地质调查局表示，这两场地震似乎并无关联 。
地球最外层由大型的地壳板块构成 。地表覆盖有至少20个地壳板块 。它们移动缓慢，有时候板块会沉降到其他板块下方 。这种情况出现时会发生地震 。
“两次地震都是因向下运动的地壳板块与向上运动的地壳板块发生撞击而形成 。另外，两次地震都出现拉张运动的迹象，这一现象很不寻常 。更典型的案例是1985年的那场地震，其对墨西哥造成的损害更大”