Learn More
A model for the high-frequency backscatter angular response of gassy sediments is proposed. For the interface backscatter contribution we adopted the model developed by Jackson et al. [J. Acoust. Soc. Am. 79, 1410-1422 (1986)], but added modifications to accommodate gas bubbles. The model parameters that are affected by gas content are the density ratio,(More)
At 5:04 P.M. on T u e s d a y , Oc tobe r 17, 1989 local t ime (10/18/89 00 :04 :15 .23 U T ) a la rge e a r t h q u a k e r u p t u r e d a 40 -km s e g m e n t of t h e San A n d r e a s fault in t he Santa C r u z M o u n t a i n s in n o r t h e r n California. T h e mag­ n i t u d e M s was calculated at 7.1 by the Na­ t ional E a r t h q u a k e I n f(More)
  • 1