Abstract

If some ten years ago, one approached a highly skilled geophysicist randomly picked from our community and asked “How can you turn signals recorded at two receivers into what would be recorded if one acts as a source?”, or “How can we use random noise from unknown sources for imaging?”, or “How do we turn an earthquake into a buried virtual receiver?”, the answer most likely would lie somewhere between “Uh, I don't know,” to “What?! You can't do that!” However, in recent years these questions as well as others (possibly even stranger) have been answered due to a boom of creative scientific work in interferometry.

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