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- W2897548022 abstract "The numerical modelling of seismic airgun sources, with a specific emphasis on the impact of sound on the marine ecosystem, is a challenging problem. In this paper, the simplified range-independent iso-velocity problem set up as part if the International Airgun Modelling Workshop (IAMW), is solved using the Parabolic Equation (PE). The acoustic pressure and particle acceleration are computed including the arrival time series and source energy level in deci-decade bands for ranges spanning from 30m to 30 km. The particle acceleration is computed by taking the spatial gradient of the pressure on the PE computational grid. The two significant challenges this problem poses to the PE solution are the very large bandwidth (5-4500 Hz) and the computational accuracy required for time-series and particle acceleration computations. Each of the metrics outlined in the statement of the problem are computed and presented. In addition to computing the required fields, the 17-gun volumetric array is placed in a 3D ocean environment in deep water in the Gulf of Mexico, with peak pressure computed out to 30km and the band integrated Signal Energy Level (SEL) computed to 400 km." @default.
- W2897548022 created "2018-10-26" @default.
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- W2897548022 date "2018-09-01" @default.
- W2897548022 modified "2023-10-18" @default.
- W2897548022 title "Parabolic equation modeling of a seismic airgun array" @default.
- W2897548022 doi "https://doi.org/10.1121/1.5068517" @default.
- W2897548022 hasPublicationYear "2018" @default.
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