Dark fiber covers much of the country, and stretches across the ocean basins-which are hard to study using traditional seismometers.

暗光纤覆盖了全美大部分地区，并延伸至整个海洋盆地地区，而海洋盆地很难用传统的地震仪来研究。

A seismometer will look for Mars quakes.

地震检波器可以检测火星的地震。

A seismometer, this is the high-resolution, very sensitive instrument.

这是地震器，它的分辨率很高，精密度也高。

That is a part of Mars where some kinds of seismic waves cannot travel directly to InSight's seismometer.

这是火星的一部分，在那里，某些类型的地震波无法直接到达“洞察号”的地震仪。

The snag lies with the seismometer, capable of measuring group movement as small as the diameter of an atom.

问题出现在了地震仪，它可以检测小至原子级别的地面运动。

They got into a debate with the Soviet delegation over which nation's seismometers were superior.

他们与苏联代表团就哪个国家的地震仪更先进进行了辩论。

29 small, underwater observatories, equipped with pressure sensors, seismometers and accelerometers, are installed directly on the fault-line off the coast of Osaka.

29个小型水下观测站，装备有压力传感器、地震仪和加速度计，直接安装在大阪海岸的断层线上。

It's got an arm… It can listen with its seismometer.

它有一只手臂… … 它可以用它的地震仪听。

That sounds a silly suggestion, but that was precisely the idea adopted in some of the early instruments (seismometers) for recording earthquake waves.

这听起来似乎是一种愚蠢的想法，但是早期记录地震波的仪器（地震仪）正是采用了这种思路。

Geologists have long used seismometers to track and map these tiny shifts in the earth's crust.

地质学家早已使用地震仪来追踪、绘制地壳中的这些微小变化。

In an earthquake, some vibrations bounce off the seafloor and turn into sound waves that get picked up by seismometers and underwater microphones.

在地震中，一些振动从海底反射回来，转化为声波，被地震仪和水下麦克风接收。

Here's an example seismometer signal and its Fourier transform.

这是一个地震仪信号及其傅里叶变换的示例。

NASA's InSight mission, which landed on the Red Planet about a year ago, placed a seismometer on the planet's surface to listen for quakes.

一年前，美国国家航空航天局（NASA）的“洞察”号探测器在火星登陆，并在火星表面放置了地震仪来监测地震。

Even though a seismometer signal looks smooth and continuous, it doesn't record ground motion with infinite precision.

尽管地震仪信号看起来平滑且连续，但它并不能以无限的精度记录地面运动。

But the seismometer signal depends not only on the yield of the device but also on how deep it was buried.

但地震仪信号不仅取决于设备的产量，还取决于它埋藏的深度。

NASA's InSight mission, which landed on the Red Planet about a year ago, placed a seismometer on the planet's surface to listen for quakes.

大约一年前降落在这颗红色星球上的 NASA 洞察号任务在火星表面放置了一个地震仪以侦听地震。

Scientists use a range of tools, from seismometers to satellite imagery, to track signs of unrest such as seismic activity, ground deformation, and gas emissions.

科学家使用从地震仪到卫星图像等一系列工具来追踪地震活动、地面变形和气体排放等动乱迹象。

They knew that all this information was contained in the seismometer signal but it couldn't just be read off by looking at the squiggles.

他们知道所有这些信息都包含在地震仪信号中，但不能仅通过查看波形曲线来读取。

Ajo-Franklin points out that seismometers are pretty sparse in the world's oceans: " It's a big blank spot." So these cables could really come in handy.

Ajo-Franklin 指出，世界海洋中的地震仪非常稀少：“这是一个很大的空白点。”所以这些电缆真的可以派上用场。

The real obstacle to detecting underground explosions wasn't the accuracy of the seismometers, it was the vast amounts of computation required to Fourier transform the seismometer signals.

探测地下爆炸的真正障碍不是地震仪的精度，而是对地震仪信号进行傅立叶变换所需的大量计算。