Presentation on theme: "P-Wave and S-Wave Chart"— Presentation transcript:
1 P-Wave and S-Wave Chart Working WiththeP-Wave and S-Wave Chart
2 Things found using the Chart Travel time – time a seismic wave takes to travel from epicenter to city (seismic station).Epicenter distance – The distance in kilometers (km) between the city and the epicenter (radius of the circle drawn on map).When given or using the travel time for one wave to travel the distance.When given or using Difference in arrival time between P & S waves (lag time).
3 This represents TIME (in minutes!) Notice the vertical axisThis represents TIME (in minutes!)Let’s enlarge a small section
4 20 Between each minute, we notice that there are 3 segments. If there are 60 seconds in a minute, each one of these segments must be ________seconds.20
12 Another example... Go to the chart! The recording station at a city tells us it took 6 minutes and 20 seconds for the P-Wave to reach that city. How far away from the epicenter (epicenter distance) must the seismograph in this city be?Go to the chart!