One must get the methods of measuring position and time working together if we are to obtain a reliable representation of motion. To that end we have developed a unique system composed of elements ...

A horizontal line on a distance-time graph close distance-time graphA graph with distance travelled plotted on the vertical axis against time taken on the horizontal axis. shows that the object is ...

Seismic velocity changes provide a window into the dynamic behaviour of the Earth’s crust and constitute a vital parameter in earthquake monitoring. Recent advances have refined methods for detecting ...