SEA-BED RECONSTRUCTION
The knowledge of the structure and composition of the
upper sediments of the ocean bottom is of great importance for acoustic
propagation studies. The traditional method for collecting such geological
information is through in situ sampling (e.g.
coring) of the sea bed. However, this method is time consuming and expensive, whereas
it supplies only very localized point samples, and still involves a fair amount
of interpretation before these data can be used in acoustic propagation
predictions.
Sea-bed reconstruction by acoustic means offers an
efficient alternative to traditional sampling and in this connection it is a topic of much interest in the underwater acoustics
community. The development of inversion methods for the recovery of
structure and composition of the sea floor from acoustic data is one of the
group s activities. Particular emphasis is put on multilayered and elastic
bottoms. The inversion techniques
developed have been successfully applied to acoustic data from tank and field
experiments.
IACM contributions /
interests
- Reflection coefficient methods
- Matched-field geoacoustic inversions
- Modal geoacoustic inversions
- Continuous and hybrid sea-bed models