This is the rule of God Almighty. We all do our part and God does his part. Mother nature balances the nature. We do our part and she does her part. Now are we doing our part faithfully ? Are we trying to win over mother nature..then yes there will be more natural calamties. One one side Ocean bed is spreading and other side, ocean bed is terrenching down. One one side mountains are rising and other side valleys are deepning, these are natural form of nature. Erosions, formss of new landforms.Our deeds like blasts, polutions ,deforestation, etc create imbalance so these calamaties may occur often.
All these tectonic movements are the part of our mother nature.