JAPANESE SCIENTIFIC TEAM

EARTHQUAKES AND VOLCANOES NEAR OCEAN TRENCHES

SIMULATION GUIDE

Your team is led by Dr. Fujii of Tokyo University

You have been using seismographs to detect the location and depth of earthquakes near a large trench in the Western Pacific Ocean.  Your data is in the table below. 

Plot your data on the cross-section on the next page.  Discuss any patterns you find.  Draw the volcano Matamura on its location at the "surface" of the diagram at 530 kilomters from the recording station.

Event Number

Depth of Earthquake (km)

Distance from Recording Station (km)

Event Number Depth of Earthquake (km)

Distance from Recording Station (km)

 

1

397

400

13

20

90

2

NA

NA

14

220

340

3

NA

NA

15

340

395

4

195

295

16

475

455

5

545

520

17

80

190

6

50

200

18

15

50

7

95

210

19

400

425

8

300

350

20

530

475

9

30

150

21

105

260

10

630

520

22

30

105

11

235

305

23

50

190

12

150

230

24

600

520

Event Number

Depth of Earthquake (km)

Distance from Recording Station (km)

Event Number

Depth of Earthquake (km)

Distance from Recording Station (km)

1

397

400

13

20

90

2

NA

NA

14

220

340

3

NA

NA

15

340

395

4

195

295

16

475

455

5

545

520

17

80

190

6

50

200

18

15

50

7

95

210

19

400

425

8

300

350

20

530

475

9

30

150

21

105

260

10

630

520

22

30

105

11

235

305

23

50

190

12

150

230

24

600

520

Go to the website listed below and read the information that is there.

Subduction

Subduction

How a seismograph works

What is a seismograph?

How do we measure the size and intensity of earthquakes?
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