Converted waves in shallow marine environments: Modelling and field experiments

Converted waves in shallow marine environments: Modelling and field experiments

El Allouche, N.

Wapenaar, C.P.A. (promotor)
Simons, D.G. (promotor)
Drijkoningen, G.G. (promotor)

Civil Engineering and Geosciences

Geotechnology

2011-10-27

The shallow marine subsurface is explored for various engineering purposes e.g. constructing installations and platforms, laying pipelines and dredging for sand. Knowledge of the soil properties is essential to minimize the risks involved with these offshore activities. Energy resources in the form of gas hydrates and hydrocarbon reservoirs are often found a few hundred meters to a few kilometers below the seafloor. Accurate estimates of the sediments properties at shallow depths may considerably improve the image at the target depth. Seismic waves converted from compressional (P-) to shear (S-) mode can be useful to retrieve these properties. The acquisition and processing of converted-wave data in shallow marine environments remains challenging. This is due to the high velocity ratio between the P- and the S-wave in the sediments. In this thesis, the acquisition and processing of converted waves is addressed through field experiments and synthetic modelling.

Geophysics

http://resolver.tudelft.nl/uuid:48d93e30-dd74-4abd-a2c4-7f90f1440d13

2011-12-14

9789088913341

Institutional Repository

doctoral thesis

(c) 2011 El Allouche, N.