Uttarkashi rescue: High-tech devices scan for humans trapped under feet of mud
Let's understand how these devices function and how they are useful in the Dharali rescue operation.GROUND PENETRATING RADAR (GPR)Think of this device as a ground scanner. It sends radio waves into the ground or debris. When these waves hit materials of different densities, like a human body, metal, or concrete, they bounce back and are captured by GPR. The machine then shows an image or signal to indicate what's buried underneath.In Dharali, it can detect people, vehicles, or large objects hidden under layers of mud and rock. It can work even when rescuers can't dig in right away and help target where to focus rescue efforts, thereby saving time and energy.
VICTIM LOCATING CAMERA (VLC)
With debris piled higher than two floors in some areas, VLCs can extend up to six metres into narrow gaps. Each unit has a camera with built-in lights, a visual display, and a two-way communication system, allowing rescuers to see, hear, and speak to survivors who may be buried deep inside collapsed structures.It can reach places too dangerous for rescuers to enter, allowing them to talk to survivors and check their condition.THERMAL IMAGING CAMERA
Thermal cameras can detect infrared heat signatures emitted by living beings like humans and animals and convert them into a visible image. It is widely used in fire inspections and post-disaster searches like the one in Dharali.In Dharali, it is particularly useful as it can find people even in darkness or mud by detecting heat through thin layers of debris.RESCUE AN UPHILL TASKApart from civilian rescuers, more than 225 Indian Army personnel, including engineers, medical staff, and specialised rescue teams, are on the ground. Search-and-rescue dogs are also being used to support the high-tech equipment in locating missing persons.advertisementAn estimated 100 people, including nine Army troops, are missing, and rescuers are racing against time to save any person who could still be alive in the worst-affected parts of Dharali.Around 400 people, mostly tourists and pilgrims visiting Gangotri, were still to be rescued, as per the state government's assessment on Friday. Five deaths have been reported.- Ends
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