The course is based around the original reference [1])(See Bibliography) updated to modern acquisition practices and consists of the following sections.
- MARINE SEISMIC SOURCES: AN OVERVIEW
This section gives an overview of the development of marine seismic sources from their first appearance to modern day deployment. It covers types of source, acoustic wave propagation in water, bubble motion, the ghost, near and far fields, signature statistics and their measurement and computer modelling of airgun signatures.
- ARRAY HANDLING WITH GUNDALF
This section is an introduction with numerous workshops to the practical results of modelling the physics described in the previous section using Gundalf.
- DIRECTIVITY AND INTERACTION
This section describes the essence of array directivity and airgun interaction in detail with many practical examples, again illustrated with practical workshops with Gundalf. The principles of interaction are described in terms of notional sources and the physics of gun clusters is illustrated again with numerous workshops. Energy interaction is also described here.
- PRACTICAL DESIGN ISSUES
In this section, array stability, the shot effect, gun synchronisation, instrument response and centres of gravity of an array are explored and described with practical examples.
- DROP-OUT ANALYSIS
Practical drop-out criteria are covered and demonstrated using a series of workshops in Gundalf.
- OPTIMISING ARRAYS
Array optimisation for specific geophysical targets such as sub-basalt shooting are covered using Gundalf's unique optimisation modes. A series of workshops leads the attendee through various forms of constrained optimisation of airgun arrays. The relationship with seismic data processing is also described.
- ENVIRONMENTAL ISSUES
The potential impact of airgun arrays on marine life is discussed in detail including mitigation procedures.
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