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Open Access Why single channel seismic is still sexy...

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Single Channel Seismic (SCS) is one of the earliest forms of seismic acquisition, and whilst modern broadband Multi Channel Seismic (MCS) set-ups can offer superior imaging, SCS remains an important tool offering simple, cost-effective data acquisition for many offshore engineering projects. This paper presents results from two offshore wind farm sites that demonstrate how application of seismic processing techniques typically reserved for MCS applications, can significantly enhance SCS data to support building foundation-zone ground models for engineering design. Elements of the acquisition, processing and interpretation are described which demonstrate best-practice and illustrate potential pitfalls of SCS survey planning. Comparison of MCS data demonstrates how post-processed SCS data can be used to develop site ground models to a significant degree of confidence prior to MCS data being acquired. Processed data examples from sparker and boomer sources demonstrate the ability to image to depths - 100 m below seabed. Optimisation of source and receiver configuration and latest technologies are explored. Properly acquired and processed SCS is also shown to be an appropriate tool for projects with a limited foundation depth of interest, such as floating offshore wind farm and transmission projects, and also in regions where geophysical data acquisition is challenging.

Language: English

Document Type: Research Article

Affiliations: 1: East Point Geo Ltd, Norwich, UK 2: RockWave Ltd, Bedford, UK 3: Applied Acoustics Engineering Ltd, Great Yarmouth, UK

Publication date: January 1, 2023

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