The 2 earthquakes that struck Venezuela are known as a 'doublet.' How rare is that? (opens original article in a new tab)

The two powerful earthquakes that struck Venezuela’s northern coast, killing more than 180 people, were an event known as a 'doublet.'

• Two earthquakes struck Venezuela's northern coast
• The earthquakes are referred to as a 'doublet'
• More than 180 people were killed