Due to the combination of complex states of preser- vation and taphonomies in Chengjiang fossils, Huang et al.[1] expressed different opinions to those of Han e
Using the moment tensor inversion method, we calculate the focal mechanisms of the aftershock sequence of the MS=6.1 Lulong earthquake occurred on October 19, 1
Europa,the second Galilean satellite outward from Jupiter,has an outer layer of water of about 100 km thick and an outmost ice shell. The thickness of the ice s