An earthquake (also known as a quake, tremor or temblor) is the result of a sudden release of energy in the Earth’s crust that creates seismic waves. The largest earthquakes in historic times have been of magnitude slightly over 9, although there is no limit to the possible magnitude. Th...
earthquakes are recorded with a seismometer(地震检波器), also known as a seismograph(地震仪). the moment magnitude of an earthquake is conventionally reported, or the related and mostly obsolete richter magnitude(里氏量级), with magnitude 3 or lower earthquakes being mostly imperceptible 感觉不到的...
Focus of an earthquakeThe point where the rocks rupture is the focus of an earthquake. The geographic location on the surface of the Earth directly above the focus is the epicenter of an earthquake. P wavesAll earthquakes produce P waves and S waves that travel through the Earth. P waves ...
No, I don't think we have my name is li Xiao, my name is Fred Smith. Jimmy practice medicine hi, miss Watson a pleasure to meet you. Jack she is from England. Yes, I think we have met before. It's good to see you again. That's right. Mister li. Mister Fred Miller. Our ma...
at the earth's surface, earthquakes manifest themselves by a shaking and sometimes displacement (位移)of the ground. when a large earthquake epicenter (震中)is located offshore, the seabed sometimes suffers sufficient displacement to cause a tsunami(海啸). the shaking in earthquakes can also trigge...
An earthquake's point of initial rupture is called its focus or hypocenter. The term epicenter means the point at ground level directly above this.
Earthquakes can also have a range of magnitudes (震级) with the strongest having destructive consequences for the areas where they are centered, nearby areas, and even some far away areas in the case of earthquake-created tsunamis (海啸). Until relatively recently, geologists and other ...
If an earthquake strikes tonight, I used to worry, what will happen to our house? What will happen to my family? And the answer to those questions always took the form of a story. 要是在过去,如果今晚发生地震,我会很担心,我的房子...
What precisely triggered off yesterday's riot is still unclear... 究竟是什么引发了昨天的骚乱还不清楚。 柯林斯高阶英语词典 What I wanted, more than anything, was a few days' rest... 我最想要的就是能休息几天。 柯林斯高阶英语词典 She had been in what doctors described as an irreversible ve...
WhatIsanEarthquake?1❶AnearthquakeisthevibrationofEarthproducedbytherapidreleaseofenergy.Mostoften,earthquakesarecausedbyslippagealongafaultinEarth’scrust.Theenergyreleasedradiatesinalldirectionsfromitssource,calledthefocus,intheformofwaves.Thesewavesareanalogoustothoseproducedwhenastoneisdroppedintoacalmpond.Just...