High-Resolution Sub-Bottom Profiling for Marine Archaeology
Summary
High-resolution sub-bottom profiling has emerged as a cornerstone in the non-invasive investigation of submerged cultural heritage. By emitting acoustic pulses and recording their reflections from buried strata, this method reveals sedimentary layers, buried structures and archaeological artefacts without disturbance. Recent advances in signal processing and transducer design have driven resolution to sub-metre scales, enabling detailed imaging of shipwrecks, palaeolandscapes and artefact scatters. Flexible deployment platforms—ranging from small parametric profilers to autonomous surface vehicles—permit surveys in shallow, dynamic and intertidal environments that were once inaccessible. Integration with complimentary geophysical techniques, such as electromagnetic induction or multibeam bathymetry, enhances contextual interpretation by correlating acoustic stratigraphy with sediment composition and geomorphology. The global significance of these developments spans from mapping drowned prehistoric settlements to informing in situ preservation strategies for underwater cultural heritage. By combining high-fidelity imaging with rapid deployment, researchers can both detect and monitor subsurface remains, guide targeted excavations and support heritage management under international conventions.
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High-Resolution Sub-Bottom Profiling for Marine Archaeology publication trend
The graph below shows the total number of articles in high-resolution sub-bottom profiling for marine archaeology across all publications each year (not limited to Nature Index journals).
Technical terms
Sub-bottom profiling: Acoustic surveying technique that records reflections from sediment and rock layers beneath the seafloor to image buried structures.
Parametric echosounder: High-frequency acoustic system that generates narrow beams and broad bandwidth signals, achieving sub-metre vertical and horizontal resolution in shallow water.
Chirp sonar: Sonar that sweeps through a range of frequencies in a single pulse, improving signal-to-noise ratio and resolution for sub-bottom imaging.
Autonomous surface vehicle (ASV): Uncrewed vessel equipped with geophysical sensors, capable of navigating and conducting surveys in confined or shallow environments.
References
- Application of Parametric Sub-Bottom Profilers for Responsible in Situ Management of Underwater Shallow-Buried Archaeological Materials. Historical Archaeology (2023).
- Marine Geophysical Survey of a Medieval Shipwreck in Shallow Waters Using an Autonomous Surface Vehicle: A Case Study from Avaldsnes, Norway. Journal of Maritime Archaeology (2023).
- Synthetic 3D Recording of a Shipwreck Embedded in Seafloor Sediments: Distinguishing Internal Details. Heritage (2021).
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