1. Publisher's announcement

   Announcement Pages: iv - iv

2. Editorial

   • Roger Searle
   • Ken MacDonald

   EditorialNotes Pages: v - v

3. Detailed study of the Brunhes/Matuyama reversal boundary on the east Pacific rise at 19°30′ S: Implications for crustal emplacement processes at an ultra fast spreading center

   • Jean-Christophe Sempere
   • Ken C. Macdonald
   • Loren Shure

   OriginalPaper Pages: 1 - 23

4. Tectonics of a fast spreading center: A Deep-Tow and sea beam survey on the East Pacific rise at 19°30′ S

   • John D. Bicknell
   • Jean-Christophe Sempere
   • P. J. Fox

   OriginalPaper Pages: 25 - 45

5. Optimum design of Ocean bottom seismometers

   • George H. Sutton
   • Frederick K. Duennebier

   OriginalPaper Pages: 47 - 65

6. A permanent seismic station beneath the Ocean Bottom

   • David Harris
   • Robert K. Cessaro
   • David A. Byrne

   OriginalPaper Pages: 67 - 94

7. Effect of dispersion on impulsive waves

   • Shen Wang
   • Bernard le Mehaute
   • Chia-Chi Lu

   OriginalPaper Pages: 95 - 111

8. Call of papers

   Announcement Pages: 113 - 113

9. Announcements

   Announcement Pages: 114 - 114