Has somebody a paper, text, (whatever), which explains the Lagrangian Coherent Structures ? I want an explanation by words and not all the mathematical stuff. All I can find about LCS is 1. They organize flow 2. you can detect them with the Lyapunov exponents. But I want to understand what LCS are and why people care about them. I hope that somebody can help me. best wishes ATY PS: I have no clue if this is the right part of the forum to ask this question.