Lombok
An earthquake that rocked the island earlier this month killed more than 430 people.
Using satellite images of Lombok from the days after the quake, scientists measured the changes in the island's surface.
The Red Cross said it was focusing relief efforts on an estimated 20,000 people yet to get any assistance.
Rescue workers on the island of Lombok have intensified their efforts to find survivors and the dead.
WHAT'S HAPPENING
The National Disaster Mitigation Agency said the death toll is expected to rise.
The powerful quake triggered panic among tourists and residents, and was also felt on the neighboring island of Bali.
At least 14 have died and more than 160 people injured in the powerful 6.4-magnitude quake.