Citation: | XING Zihao, YI Jiaji, YANG Depeng, LU Xu, LI Wei, XU Cheng, CAI Dizhu, CHEN Liang. Single-channel seismic swell static correction method based on synchronous single-beam echo sounder data[J]. Marine Geology & Quaternary Geology, 2023, 43(4): 181-188. doi: 10.16562/j.cnki.0256-1492.2022091203 |
The swell problem is prevalent in single-channel seismic, which causes jitter in the seismic events and leads to misaligned and blurred profiles, and thus interferes or misleads geological interpretation. The problem is still not well solved because all existing swell correction methods have certain conditions of applicability. Therefore, we proposed a new method of the swell static correction based on single-beam echo sounder data. First, the basic principle of the method and the implementation steps were introduced, and then the effectiveness of the method was verified against the field data and the result were compared and analyzed with the filtering method. Finally, another type of "swell-like interference" in single-channel seismic seafloor jitter phenomenon and the application effect of the new method on the problem were discussed. Results show that the new method we proposed could effectively solve the time shift problem caused by swell in single-channel seismology, especially for the swell interference in complex seabed data; and the processing effect was good.
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Diagram of the energy ratio method of auto pick-up from the seabed
Relationship between the recorded and actual positions of reflection points in single-channel seismology
Comparison in processing result of single-channel seismic data on flat sea bed
Comparison in processing result of single-channel seismic data on complex seabed
Analysis on the results of modification of profile at sharp turn of the ship
The effect of sharp turns of ships on the spacing between cable and source