Waves & Surfing Surfboard Design and Geometry Power Generation from Waves Tsunamis Sharks Ships.
Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by...
-
Upload
tabitha-gaines -
Category
Documents
-
view
222 -
download
2
Transcript of Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by...
![Page 1: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/1.jpg)
Tsunamis
open ocean waves caused by:
Tsunamis are not tidal waves.(The tides are caused mainly by the moon’s gravity and are not related to tsunamis).
![Page 2: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/2.jpg)
Indonesia tsunami(2004) caused bya M 9.0 quake along a subductionzone
(a 750-milesection of the fault moved 50 feet!)
![Page 3: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/3.jpg)
on the open ocean:
• tsunamis have wave heights of 3 ft and wavelengths of 60 miles
• Speed: +500 mph
![Page 4: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/4.jpg)
http://www.noaanews.noaa.gov/stories2005/s2365.htm
World propagation of tsunami:
![Page 5: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/5.jpg)
The height and the distance inland that tsunamis travel depends on the topography and the shape of coastline.
![Page 6: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/6.jpg)
globalsecurity.org
![Page 7: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/7.jpg)
Tsunami warning Sign: in some cases, tsunamis are preceded by a fall in sea level
![Page 8: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/8.jpg)
![Page 9: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/9.jpg)
Before
After
Before andafter tsunamisatelliteimages of Indonesiancoastline
Survivorstories
![Page 10: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/10.jpg)
Most people that died in the Asian tsunami drownedor were killed by floating debris. However, afterthe immediate disaster other hazards became apparent:
![Page 11: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/11.jpg)
Since there may be severalminutes between waves,survivor are often sweptback out to sea
![Page 12: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/12.jpg)
Tsunami relief efforts:
• relief aid for the tsunami victims came from all parts of the world
• former US Presidents Bush and Clinton are in charge of United Nations joint tsunami reliefeffort
Some problems with providing relief aid:
![Page 13: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/13.jpg)
Tsunami warning systems are composed of 3types of devices:
![Page 14: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/14.jpg)
Pacific Ocean Tsunami warning system
![Page 15: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/15.jpg)
Deep OceanTsunameter:
• uses a
on thebottom of the ocean todetect passingtsunami waves
![Page 16: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/16.jpg)
http://www.usgs.gov/hazards/tsunamis/
http://ioc3.unesco.org/indotsunami/
Indian Ocean tsunami warning system:
USGS tsunami hazard page:
![Page 17: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/17.jpg)
![Page 18: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/18.jpg)
The highestrisk area for tsunamisin the US is along the west coast
![Page 19: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/19.jpg)
Tsunami deposits (sand)along the west coast of US
![Page 20: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/20.jpg)
Hawaiian Islands are volcanic. As these volcanoescool they become weak and are subject to ‘flank collapse’.When geologists first mapped the ocean floor around Hawaiithey found evidence for these collapses.
Steven Earle, 2004. Malaspina University-College, Geology Department
![Page 21: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/21.jpg)
Steven Earle, 2004. Malaspina University-College, Geology Department
Last known collapse:110,000 years ago
• A tsunami generated in this way today would devastate coastal areasaround the Pacific.
![Page 22: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/22.jpg)
The Canary Islands are volcanic islands similar to Hawaii.Island flank collapse would threaten coastal areas around the Atlantic, including cities along US East Coast.
The last knownflank collapsein Canary Islands:
![Page 23: Tsunamis open ocean waves caused by: Tsunamis are not tidal waves. (The tides are caused mainly by the moon’s gravity and are not related to tsunamis).](https://reader036.fdocuments.us/reader036/viewer/2022062321/56649ec55503460f94bd09d1/html5/thumbnails/23.jpg)
Earth Sciences, Ga. Tech
Estimated tsunami travel time from Canary Islands to New York: