Unit 6 Assignment Tsunami
docx
keyboard_arrow_up
School
Eastern Gateway Community College *
*We aren’t endorsed by this school
Course
111
Subject
Geography
Date
Dec 6, 2023
Type
docx
Pages
2
Uploaded by MateStarlingPerson95
Nicole C. Douglas
November 27, 2023
GEL 111 Earth Science
Eastern Gateway Community College
Unit E5-4: Related Causes of Damage-Tsunamis
The tsunami travel-time map has lines and numbers (in hours) on it to indicate how long it took the
tsunami to travel through the Pacific Basin. What is the time interval between each pair of lines?
The time interval is 1 hour.
2. Click here to add 5 locations to our map. Examine the map carefully and determine how long it took
the tsunami to reach:
A. San Francisco, U.S.A.
5 hours and 30 minutes
B. Acapulco, Mexico
10 hours
C. Galapagos Islands
13 hours and 30 minutes
D. Tokyo, Japan
8 hours and 20 minutes
E. Sydney, Australia
16 hours and 40 minutes
3a. Use the distance measuring tool and determine the average speed of the tsunami wave for each
interval between the 5 hour and 10-hour lines.
Due to each time interval is 1 hour, measuring the distance will give a number for the average speed. The
value will depend on what part of the Pacific Ocean basin is measured.
3b. What do you observe?
Independent of where the distance is actually measured, the average speed of the tsunami wave is
slowly decreasing.
3c. Can you explain this?
Friction is the usual explanation for this.
4. Prince Rupert in British Columbia, Canada had a measured wave height of 1.4 m, while Astoria,
Washington further south had a measured wave height of 0.4 m. Why is this an expected result?
This is anticipated because increased separation from the earthquake hypocenter should develop into a
miniature tsunami wave as the wave grows dimmer due to friction.
5. Port Alberni in British Colombia, however, which is between Prince Rupert and Astoria had a wave
height of 6.4 m. Can you think of a reason why the tsunami wave was higher in Port Alberni than in
either of Prince Rupert or Astoria?
Click here
to travel to Port Alberni to give you a clue.
Port Alberni is at the end of a long, slender channel. The passage aids to funnel the water, expanding the
height of the tsunami wave.
Your preview ends here
Eager to read complete document? Join bartleby learn and gain access to the full version
- Access to all documents
- Unlimited textbook solutions
- 24/7 expert homework help