• journal_title：Geophysics
• Contributor：Lasse Amundsen ; Arne Reitan
• Publisher：Society of Exploration Geophysicists
• Date：1995-
• Format：text/html
• Language：en
• Identifier：10.1190/1.1443794
• journal_abbrev：Geophysics
• issn：0016-8033
• volume：60
• issue：2
• firstpage：563
• section：Articles

A method for decomposing multicomponent sea-floor measurements into upgoing and downgoing P-and S-waves is presented. We assume that a marine survey employing a marine source in the water layer is conducted over a plane-layered medium. From recordings of the pressure just above the sea floor and the particle velocity vector just below the sea floor, decomposition filters can be determined by plane-wave analysis. The decomposition filter coefficients depend on the P- and S-wave velocities and the density at the sea bottom.We show how to decompose the multicomponent measurements into upgoing and downgoing P- and S-vertical traction components, vertical-particle velocity components, and horizontal particle velocity components. The decomposition filters are applied with good results to synthetic data modeled in a plane-layered medium.