Complex sentence: The earthquake was the result of thrust faulting at the Sunda Trench, with a rupture length of approximately, and an unusually low rupture velocity of per second, which resulted in a duration of about 185 seconds (just over three minutes) for the event.
Split into simpler sentences: The earthquake was the result of thrust faulting at the Sunda Trench. A rupture length of approximately (and an unusually low rupture velocity of per second) resulted in a duration of about 185 seconds (just over three minutes) for the event.