Sea Surface Shape Derivation above the Seismic Streamer

A-07 SEA SURFACE SHAPE DERIVATION ABOVE THE SEISMIC STREAMER E. KRAGH 1 R. LAWS 1 and L. COMBEE 2 1 1 Schlumberger Cambridge Research High Cross Madingley Road Cambridge CB3 OEL UK Summary: In this paper we show a method of deriving the shape of the time-variant sea surface above the seismic streamer. We record very low-frequency single-sensor data below 0.5 Hz using seismic hydrophones. We then invert the resulting pressure variations to give the wave heights and streamer displacement as functions of position and time. The concurrent recording of the conventional seismic data is unaffected by this method. The