Vít Kárník (5 October 1926 in Prague – 31 January 1994 in Prague) was a Czech geophysicist and seismologist. He and Wilhem Sponheuer developed the Medvedev–Sponheuer–Karnik scale (MSK-scale) for measurement of intensity of earthquakes with Sergei Medvelev and in scale described magnitude of epicentric points.
MS=log10\left({A\overT}\right)max+\sigma\left(\Delta\right)=log10\left({A\overT}\right)max+1{,}66log10\Delta+3{,}3
max. depth 50Km[1]