One of the world’s leading seismologists discusses the disaster in Turkey and Syria, a month later.
On February 6, around 4 am, the ground in southern Turkey and northern Syria trembled for more than a minute, while most people were sleeping.
A magnitude 7.8 earthquake, centered 32 km (20 miles) west of the Turkish city of Gaziantep, struck the region, cracking open the ground and causing extensive damage.
And nearly 10 hours later, another magnitude 7.5 seismic event rocked the region again.
Since then, other tremors and aftershocks have followed.
But what can we learn from what happened in Turkey and Syria a month ago?
Seismologist Lucy Jones speaks to Al Jazeera.