Citation: | LIU Hong, XU Huaning, LIU Xinxin, CHEN Jiangxin, ZHANG Feifei, WANG Xiaojie, YAN Zhonghui, YANG Jiajia, YANG Rui. Data processing in Qingdao Institute of Marine Geology: today and tomorrow[J]. Marine Geology & Quaternary Geology, 2024, 44(3): 40-52. doi: 10.16562/j.cnki.0256-1492.2023112002 |
This paper introduces in detail the development process, current situation, and outlook of geophysical data processing technologies used in Qingdao Institute of Marine Geology. The key geophysical processing technologies, such as multi-beam high-precision imaging and acoustic information extraction, gravity and magnetic data processing and interpretation, shallow water high-resolution sub-bottom profiling / single-channel seismic processing, low signal-to-noise ratio small-interval multi-channel seismic imaging, long-spread and multi-channel seismic data processing, three dimensional hydrate seismic processing, and geophysical inversion and target recognition, are summarized and the future development prospect of these data processing technologies are envisaged. These technologies have been successfully applied to marine basic geological survey, coastal zone survey, deep-sea geological survey, and oil- gas and hydrate resource exploration projects, providing good supports to marine geological survey and research.
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Comparison in topography and geomorphology before and after fine processing of multi-beam data in a sea area
The calculation results of regression analysis of daily variation of geomagnetic data
Flowchart of comprehensive interpretation on gravity and magnetic data
The waveform of the raw data before and after data editing
Comparison of sub-bottom profile before and after topographic correction
Stack sections before and after hyperbolic noise suppression
Stack sections before and after weighted coherent enhancement processing
Comparison of a velocity spectrum before and after multiple suppression
Comparison of pre-stack time migration profile (left) and pre-stack depth migration profile (right)
The three-dimensional display of the final velocity field
Comparison of the seismic folding before and after data regularization
The escape channel of shallow gas deciphered from a shallow stratigraphic profile (from reference [47])