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VOA慢速英语[科技报道]美国大学研发出地震预警手机应用

2016-04-26    来源:普特英语编辑部    【      美国外教 在线口语培训
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 A new phone app uses vibrations from smartphones to alert people about earthquakes.

The phone app recognizes sudden shaking of the earth's surface through sensors in smartphones.
 
The new app is called MyShake. It is the work of four researchers at the University of California, Berkeley. They said they created a worldwide warning system that would inform people and give them time to prepare.
 
Other earthquake apps include QuakeFeed, Quakes and Earthquake. They show where earthquakes have happened, at what strength, and the aftershocks. Those use data from the U.S. Geological Survey.
 
The MyShake app is available only for Android phones.
Smart phones are equipped with accelerometers. These instruments measure movement, like that of a car or airplane. They can also measure the shaking of a machine, building or other structure.
 
Accelerometers are used in activity trackers and apps that count steps or other exercise. They also are used in global positioning system apps, also called GPS.
 
MyShake uses phone accelerometers to measure seismic activity. It has been programmed to know the difference between normal activity and earthquake movement. The software developers say their app is right 93 percent of the time.
 
A smartphone sends seismic information to the app developers. If the developers receive several notifications from one area, it recognizes that an earthquake may be taking place or will take place soon.
 
Using information sent from the app, the network then estimates the location and strength of the quake in real time. MyShake can record magnitude 5.0 earthquakes at distances of 10 kilometers or less.
 
MyShake uses very little power, according to its developers. Only when seismic activity is sensed by the app does it become active and sends data to the network.
 
 
The app works best when your phone is resting on a flat surface, like a table.
 
The developers hope that MyShake can add to information collected by the U.S. Geological Survey. That U.S. agency has created the Earthquake Early Warning System, also known as the EEW. The EEW has deployed sensors for measuring quakes in many areas. In places where no such equipment exists, MyShake may be the only method of early quake detection. 
 
The app also shows ways to stay safer during an earthquake. The developers say it will become more effective as more people use it.
 
"Our goal is to build a worldwide seismic network and use the data to reduce the effects of earthquakes on us as individuals and on society as a whole," say the researchers.
 
The developers say they hope to add a feature that would warn people about a possible tsunami, or the huge waves after an earthquake.
 
I’m Kathleen Struck.
 (文本来源于普特论坛[report整理] SENEWS-2016-03-14)

一项新的手机应用可通过智能手机的振动,提醒人们地震的发生。

 
该款手机应用通过智能手机的传感器可识别地表突然的震动。
 
该款手机应用被称为MyShake,是加州大学伯克利分校的四名研究人员的研发成果。他们称创造了全球预警系统,该系统可提醒人们,让人们有时间准备。
 
其它地震应用包括QuakeFeed、Quakes 和Earthquake。它们可显示已发生地震的地点、强度和余震。这些数据均来自美国地质调查局。
 
MyShake应用仅适用于安卓手机。
 
智能手机内置加速计,这类仪器可测量如汽车或飞机的运动,也能测量机器、建筑或其它结构的振动。
 
加速计用于活动追踪器及统计步数或其它运动的应用,还可以用于全球定位系统(也称GPS)。
 
MyShake利用手机加速计测量地震活动,设定的程序使之可区分正常活动和地震运动。该软件研发者称其应用的准确率达93%。
 
智能手机向应用研发者发送地震信息,如果研发者接收到同一地区的数条通知信息,就可判断可能正在发生地震或即将发生地震。
 
通过软件发送的信息,网络将实时估算出地震位置和强度。MyShake可记录10公里内的5级地震。
 
研发者称MyShake耗电低。只在应用感知地震活动时才被激活并向网络发送数据。
 
当手机放置于桌面之类的平面,该应用最管用。
 
研发者希望MyShake可以补充美国地质调查局搜集的数据。该机构已经创建了地震早期预警系统(也称作EEW)。该系统在许多地区安置了测量地震的传感器,在没有这类设备的地区,MyShake可作为地震早期监测的唯一途径。
 
该款应用还展示了地震中如何自保的方法,研究者称随着越来越多的人使用,该应用将更有效。
 
研究人员称:“我们致力构建全球地震网络,利用数据降低地震对个人和整个社会的影响。”
 
研发人员称,希望增加一个提醒人们震后可能发生海啸的功能。
 
我是Kathleen Struck。


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