Continuous wavefields method - Insights from a shallow water field trial

In this paper we discuss the results from a shallow water 2D field test that PGS acquired in the autumn of 2019 offshore Malaysia using the continuous wavefields method. The primary purpose of this test was to demonstrate the continuous wavefields method in shallow water areas. In addition, different source configurations including tow depths, air pressures, gun volumes, number of air-guns perstring, and time intervals between consecutive actuations of air-guns were tested. After a discussion of the different source configurations, we present preliminary results. The overall sound exposure levels (SEL) are very similar for the different source configurations. The small differences are mainly related to trigger time intervals of the individual airguns, and to air-pressure. At lower frequencies the differences are mainly related to the volumes of the air guns used. Preliminary results achieved so far indicate that the continuous wavefields method works well in shallow water, and with relatively small differences between the different triggering schemes and source configurations.