Whoever is ignorant of the past remains forever a child. For what is the worth of human life, unless it is woven into the life of our ancestors by the records of history?
Marcus Tullius Cicero (106–43 BCE, Roman statesman, lawyer, scholar and writer) Elements of
An artist’s impression of a modern marine seismic survey seen from below. The seismic vessel is towing several long streamers. The two sources, fired in a flip-flop manner, consist of three subarrays each. A deflector (door) is visible on the right-hand side of the picture. Such a door is shown in more detail in Figure 1.27.