Flexichoc FHC50 seismic source

A comprehensive account of the Flexichoc FHC 50 seismic source is presented in terms of the way in which the source works, its pulse shape and frequency content, and the logistical considerations concerning deployment and operation. Data examples acquired during normal operations illustrate that this source is ideal for high-resolution digital seismic acquisition, giving resolution to within 2 m of the seabed, and allowing penetration to 2 s TWT. This paper also compares the manufacturer's supplied characteristics with field trials, and includes a direct comparison between adjacent survey lines with the Flexichoc and a sparker source.