Question: Which of the following sequences correctly lists the different arrivals from first to last?
The correct sequence of earthquake wave arrivals from first to last as recorded on a seismograph at a station is as follows:
1. P-waves (Primary waves): These are the fastest seismic waves and are detected first when an earthquake occurs. P-waves move by alternately compressing and stretching materials in the direction of wave propagation³. They can travel through both solids and liquids.
2. S-waves (Secondary waves): S-waves move with a shearing motion, shaking particles from side to side. They are slowerthan P-waves and are detected after the P-waves have been measured. Unlike P-waves, S-waves cannot travel through liquids.
3. Surface waves: Surface waves travel along the Earth's surface. They decay more slowly with distance than body waves (P-waves and S-waves) and tend to cause more damage. There are two types of surface waves:
- Rayleigh waves: These move particles in an elliptical motion, causing both vertical and horizontal ground movement.
- Love waves: These move particles in a horizontal, side-to-side motion and are responsible for most of the damage during an earthquake².
Remember, the order of arrival is crucial for locating the earthquake's hypocenter accurately. If you have any more questions or need further clarification,
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