| Our country has a 34,000-kilometer coastline and a relatively large sea area.Therefore,it is of great significance to the development of economy and national defense by exploring marine information extraction methods and obtaining effective marine physical information.The purpose of this paper is to establish a complete method for processing large-scale ocean data based on the principle of reflection seismic exploration of seismic oceanography to invert seawater sound velocity profile.Specifically,the main work consists of the following parts.1.A complete seawater sound speed profile extraction method and process were established for the sea reflection seismic data,and the feasibility of the method was verified based on simulation data.In this paper,a set of layered seawater model was designed and simulated based on the actual situation.By dealing with the model,the full-waveform acoustic wave equation is simulated to obtain the sound speed profile.Finally,the effectiveness of the proposed method was verified by comparing the experimental results with the theoretical design model.2.The application of migration in the inversion of seawater sound speed profile was discussed.In this paper,a two-layer tilt model and a fault model were designed for the oceanographic characteristics of the seawater front,and the two models are processed based on the Kirchhoff migration method to verify the positive effect of migration on improving the imaging of the seawater layer.Ultimately we chose the better migration way that fitted the two models.3.On account of the actual sea trial data,the extraction method was verified.The extraction method obtained by forward simulation was used to process the actual sea trial data of a certain sea area.First,the seawater and seafloor profile were analyzed together,then the seawater profile was separately analyzed.In the end,the results of the processing were summarized. |
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