About 150 people were still unaccounted amid fears that the death toll of at least four could go much higher.
WHAT TECHNOLOGIES HAVE PROVEN USEFUL IN SUCH COLLAPSES?
The most common, time-tested technologies used to try to locate survivors in rubble are acoustic detection and sniffer dogs.
Aerial drones equipped with cameras and other sensors can be useful to get a close look at the collapse, especially in the earliest stages of a search to help rescuers know where it’s safe to enter. Data from smartphones and telecommunications carriers can show if a missing person was in the area — and cellphone-detecting gadgets can pick up a phone’s signals, as long as it hasn’t been destroyed.
Joana Gaia, a professor of management science and systems at the University of Buffalo, said it’s common for search teams to use radar and microwaves that bounce off objects and can identify people and objects. She said it’s similar to the technology in cars that beeps when you’re close to hitting something backing up.
That can be more useful than cell phone geolocation, especially when speed is of the essence. In a disaster situation, data is only useful if it can be interpreted quickly.
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