Tsunami - PowerPoint PPT Presentation

About This Presentation
Title:

Tsunami

Description:

Tsunami Series of very long-wavelength waves on the ocean Tsunami = – PowerPoint PPT presentation

Number of Views:579
Avg rating:3.0/5.0
Slides: 28
Provided by: GregM181
Category:
Tags: tsunami

less

Transcript and Presenter's Notes

Title: Tsunami


1
Tsunami
Series of very long-wavelength waves on the ocean
2
(No Transcript)
3
Tsunami
  • "tidal wave"
  • Tsunami has nothing to do with tides

4
Video clipTsunamis
5
Tsunami waves
  • Very small out in the open ocean
  • Amplitude of only 1 meter
  • Very long wavelengths (up to 100 km)
  • Travel very fast (as much as 500 mph)

6
(No Transcript)
7
Tsunami waves
  • When waves reach shallow water, they "feel" the
    shallow bottom, just like ordinary waves, and
    they slow down (to 20-30 mph)
  • Because of the massive energy, this slowdown
    causes them to build up very high (up to 50-100
    m)

8
(No Transcript)
9
Tsunami can be generated by any process that
displaces a large amount of water
  • Sub-sea earthquakes
  • Giant landslides
  • Volcanic eruptions
  • Meteorite impacts

10
(No Transcript)
11
Runup
  • Maximum height above sea level reached by a
    tsunami when it reaches shore

12
Inundation
  • Horizontal distance from the normal water's edge
    reached by a tsunami

13
Hilo after 1946 tsunami
14
1952 Tsunami wave passing under bridge at Haleiwa
Kaiaka Bay
15
1946 tsunami -- Hilo harbor 159 fatalities
16
Beach in Laie, Oahu before tsunami generated by
1957 quake in Aleutians
17
(No Transcript)
18
(No Transcript)
19
1983 Japan tsunami -- water recedes
20
1983 tsunami in Japan 104 people drowned 700
boats, 59 houses destroyed 800 Million
property damage
21
(No Transcript)
22
(No Transcript)
23
(No Transcript)
24
2000
25
(No Transcript)
26
(No Transcript)
27
S.E. Oahu Field Trip
  • Saturday, October 30 Nov. 6
  • 830 am 3 pm
  • Meet Here at 830 am
  • We will see Diamond Head, Hanauma Bay, Koko
    Crater, Castle Junction
  • Bring water, hat, sun screen, walking shoes
  • Worth 30 pt. Additional Credit
Write a Comment
User Comments (0)
About PowerShow.com