Leon Knopoff (July 1, 1925 – January 20, 2011) was an American geophysicist and musicologist.
[1] He received his education at Caltech, graduating in 1949 with a PhD in physics, and came to UCLA the following year.
His research interests spanned a wide variety of fields and included the physics and statistics of earthquakes, earthquake prediction, the interior structure of the Earth, plate tectonics, pattern recognition, non-linear earthquake dynamics and several other areas of solid Earth geophysics.
In 1983, Knopoff published a paper in Nature with Steven Kilston, suggesting that earthquakes were linked to an "alignment of the sun and moon on opposite sides of the Earth that tugged the opposite sides of faults in opposing directions".
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