1 / 5

Tsunami of December 2004

Tsunami of December 2004. Gravity Wave Propagation?. Background. Origin: 00:58:53 UTC on December 26, 2004 Earthquake with an epicenter off the west coast of Sumatra, Indonesia. Magnitude 9.1-9.3 second largest earthquake ever recorded on a seismograph.

ania
Télécharger la présentation

Tsunami of December 2004

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Tsunami of December 2004 Gravity Wave Propagation?

  2. Background • Origin: 00:58:53 UTC on December 26, 2004 • Earthquake with an epicenter off the west coast of Sumatra, Indonesia. • Magnitude 9.1-9.3 • second largest earthquake ever recorded on a seismograph. • longest duration of faulting ever observed, between 8.3 and 10 minutes. • Entire planet vibrated as much as 1 cm (0.5 inches) and triggered other earthquakes as far away as Alaska. • Sea bed estimated to have risen by several meters, displacing an estimated 30 km³ (7 cu mi) • The wave reached a height of 24 m when coming ashore along large stretches of the coastline, rising to 30 m (100 ft) in some areas when travelling inland. (Source: Wikipedia and references therein)

  3. Travel Times (Source: National Institute of Advanced Industrial Science and Technology, Japan Active Fault Research Center )

  4. Travel Times (Source: National Institute of Advanced Industrial Science and Technology, Japan Active Fault Research Center )

  5. 4 Tasks • Propagation to Sri Lanka – what is the depth of the ocean? • Propagation to Madagascar – consistent with being a gravity wave? • What’s going on in the (slow) propagation to Thailand? • Can we deduce the height of some mid-ocean ridges? (Figures source: National Institute of Advanced Industrial Science and Technology, Japan Active Fault Research Center )

More Related