Atlantis Online
May 17, 2022, 09:38:58 am
Welcome, Guest. Please login or register.

Login with username, password and session length
News: Ruins of 7,000-year-old city found in Egypt oasis
http://news.yahoo.com/s/afp/20080129/wl_mideast_afp/egyptarchaeology
 
  Home Help Arcade Gallery Links Staff List Calendar Login Register  

EXPLORING THE OCEAN BASINS WITH SATELLITE ALTIMETER DATA

Pages: [1] 2   Go Down
  Print  
Author Topic: EXPLORING THE OCEAN BASINS WITH SATELLITE ALTIMETER DATA  (Read 2031 times)
Karissa Oleyanin
Superhero Member
******
Posts: 4127



« on: February 01, 2009, 02:15:39 am »

Plate Tectonics
These satellite altimeter data provide an important and definitive confirmation of the theory of plate tectonics. Indeed, almost everything apparent in the marine gravity field was created by the formation and motion of the plates. The Indian Ocean Triple junction (27 deg S latitude, 70 deg E longitude) is a textbook example of seafloor spreading. Spreading ridges are characterized by an orthogonal pattern of ridges and transform faults. The scar produced in the active transform valley is carried by seafloor spreading out onto older seafloor leaving evidence of the past plate motions. At this Indian Ocean site, three spreading ridges intersect forming a triple junction as described by plate tectonic theory. The theory predicts that the ridges would intersect at 120° angles if the three ridges were spreading at exactly the same rate. In this case, one can measure the intersection angles and infer the relative spreading rates of each ridge.

Report Spam   Logged


Pages: [1] 2   Go Up
  Print  
 
Jump to:  

Powered by EzPortal
Bookmark this site! | Upgrade This Forum
SMF For Free - Create your own Forum
Powered by SMF | SMF © 2016, Simple Machines
Privacy Policy