首页
登录
职称英语
How can the new technology predict the coming earthquake? [originaltext] Curr
How can the new technology predict the coming earthquake? [originaltext] Curr
游客
2025-03-28
31
管理
问题
How can the new technology predict the coming earthquake?
Currently, the most modern systems for predicting earthquakes find them only a short time before the event. Like most strong earthquakes, the one that hit southwestern China in May was not identified early enough for people to flee the area. That earthquake killed sixty-nine thousand people.
But scientists who study earthquakes are reporting that new technology could measure very small changes below ground in the Earth’s surface. Their report was published in September in Nature magazine.
Fenglin Niu is an earthquake expert with Rice University in Houston, Texas. He and his team performed experiments along California’s San Andreas Fault, an area famous for its many earthquakes.
The team placed highly sensitive electrical devices about one kilometer below ground in two different places. The devices were able to measure even small changes in air pressure below ground. The scientists say such changes are caused when rocks push together, forcing air out of small cracks in the rock. When this happens, earthquake waves travel faster than usual through the rock.
The experiment was performed near Parkfield, California. Two earthquakes hit the area in late two thousand five. The first took place on December twenty- fifth. A smaller earthquake struck five days later.
The scientists noted changes below ground about ten hours before the first quake struck. That quake measured three in intensity. They then found similar changes taking place two hours before the other quake struck five days later.
The earthquake in China rated seven point nine in intensity. If additional tests confirm the changes are linked to earthquakes, the scientists believe their equipment could be used for early warning systems. A system that provides a signal ten hours before a major earthquake could help move people from the area and save lives.
The scientists now hope they can find earthquakes with even greater intensity by placing their equipment deeper in the ground.
选项
A、It can find small changes below ground before the earthquake.
B、The devices are placed much deeper below ground.
C、The new electrical devices are highly sensitive.
D、It can help find the earthquake-prone are
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/4015821.html
相关试题推荐
Whywasthewomanwatchingare-runprogramonTV?[br][originaltext]Woman:He
Whywasthewomanwatchingare-runprogramonTV?[br][originaltext]Woman:He
Whatdoesthewomanmean?[br][originaltext]Man:Ireallycan’tdecidewhichc
Whatdoesthewomanmean?[br][originaltext]Man:Ireallycan’tdecidewhichc
Whatdoesthewomanmean?[originaltext]Man:Ireallycan’tdecidewhichcourse
Whatdoesthemanmean?[br][originaltext]Man:Nancy,howisyourdaygoing?W
Howcanthenewtechnologypredictthecomingearthquake?[br][originaltext]
Howcanthenewtechnologypredictthecomingearthquake?[originaltext]Curr
Whatdoesthemanmean?[br][originaltext]Woman:WhydoyoutreatChrisliket
Whatdoesthemanmean?[originaltext]Woman:WhydoyoutreatChrislikethat?H
随机试题
Memoryisinvolvedwhenaratgivesupeatinggrainbecausehehassniffedsomet
[audioFiles]audio_ehaz200812_001(200812)[/audioFiles]A、Closethewindow.B、Open
按照贮存物品的火灾危险性分类,不燃烧物品属于()。A.乙类 B.丙类 C
维克多·雨果被人们称为“法兰西的莎士比亚”。()
根据《劳动合同法》,劳动者的下列情形中,用人单位不得解除劳动合同的是()。A.
依据结构材料不同,公路复合隔离栅立柱分为3类:TP型、KP型和BP型。()
神经细胞动作电位复极化的形成是A.主要是细胞外Cl内流 B.主要是细胞内K外流
项目管理方案的内容一般应包括()。A、对项目实施的环境和条件、项目定义与项目目标
2005年10月,国际金融公司和亚洲开发银行分别获准在我国银行间债券市场发行11
通常用于改善混凝土拌合物流动性的外加剂有()。A.缓凝剂 B.早强剂
最新回复
(
0
)