Underground Valleys Will Intensify the Shaking in the Next Big One

There’s a basin (a dip in crustal rocks) filled with 65 million years worth of sediments, beneath Cupertino. The basin could focus waves in a big quake.

But sometimes, a basin can act as a lens to focus shear waves — the most dangerous form of shaking in an earthquake. These waves shake in several directions — up and down and sideways — and wrench buildings apart.

Link

Possibly Related posts (machine generated):

  1. 5.0 Tremblor in Marin
  2. A Big One near the Central Coast
  3. Don’t be at Costco when the Big One hits
  4. Upcoming LA Quake ‘Will Be Huge,’ Insiders Say
  5. I Feel The Earth Move Under My Feet

More like this: , .

This entry was written by Bill Humphries and posted on November 3, 1998 at 12:00 am and filed under Uncategorized. Bookmark the permalink. Follow any comments here with the Atom feed for this post. Both comments and trackbacks are currently closed.