The Alaska Fisheries Science Center website is now part of the NOAA Fisheries website.
Some information may not be up to date. Join us at our new location, www.Fisheries.NOAA.gov/region/alaska.
Please contact afsc.webmaster@noaa.gov with any questions.




link to AFSC home page
Mobile users can use the Site Map to access the principal pages

link to AFSC home page link to NMFS home page link to NOAA home page

Alaska Bathymetry: Central Gulf of Alaska Seafloor Changes(pg 1, 2, 3, 4, 5, 6, 7, 8, 9, 10)

Seafloor Changes of Central Gulf of Alaska

Great Alaska Earthquake of 1964

An added difficulty in describing bathymetry across this vast area is that it is changing faster than it is being surveyed. The best known example of seafloor change is the great Alaska earthquake of 1964 (magnitude 9.2), centered near Valdez, which abruptly altered the seascape across a large expanse of the CGOA (National Research Council 1972). A comparison of smooth sheet surveys conducted before and after the 1964 earthquake showed sinking of 0.2 to 9.8 m in Resurrection Bay, rising of 6.1 m at Cape Clear, and rising of 1.6 to 4.2 m at Middleton Island.

earthquake

References
National Research Council. 1972. The great Alaska earthquake of 1964: Seismology and geodesy. National Academy of Sciences, Washington, D.C., 596 p.

<<<

>>>


            | Home | Site Map | Contact Us | FOIA | Privacy | Disclaimer | USA.gov | Accessibility | Print |           doc logo