The diameter of the meteorite impact crater at Sudbury, Ontario, is approximately 250 km. Calculate the amount of energy (E) released by this impact (Consult Science Brief 8.11.4). Express the energy in terms of tonnes of *** where 1 kilotonne = 4.2 × 1019 erg.
Equation D = 1.96 × 10-5 E0.294
log D = log (1.96 × 10-5) + 0.294 log E
D is in kilometers, E is in joules where 1J = 107 erg
D = 250 km
log 250 = 4.707 + 0.294 log E
2.3979 + 4.707 = 0.294 log E
