In recent days, the north coast of São Paulo has been damaged by landslides and flooding in different cities after record levels of rain. — in some areas the volume was more than 600 millimeters in a 24-hour period. However, the disaster could have been smaller, as the National Center for Monitoring and Warnings of Natural Disasters (Cemaden) said it had warned the state government of São Paulo and the Municipality of São Sebastião two days in advance of the high risk of landslides. . .

The problem is that the disaster warning was sent to the government, but residents reported that they did not receive any warnings about the dangers of landslides, landslides and flooding – only warnings were sent about heavy rains. In a statement made by Cemaden, it was stated that the Vila do Sahy region, where more than 30 people lost their lives, is at risk.

Cemaden uses a technology that continuously monitors the entire country’s territory to detect possible natural disasters in advance. When any changes are detected, the federal agency advises other agencies to take action to prevent major disasters.

“We were able to make an estimate 48 hours in advance, including the location of the disaster,” said Osvaldo Moraes, director of the community. G1.

How does technology that predicts tragedy work?

The Geodynamic Monitoring Project, initiated by Cemaden in 2013, uses geotechnical sensors to monitor landslides across the country. Terminals, called Robotic Total Stations (ERTs), were installed on slopes in different regions, starting from a central point in the middle of an area surrounded by slopes, covering a 360-degree horizon and covering 2.5 km.

By synchronizing ERTs, Cemaden monitors ground motion-based meteorological and geological indices to send alerts about extreme precipitation and landslide risks. For example, one of the alerts warned of heavy rain in the city of São Sebastião, where 47 people died and more than 50 went missing – Civil Defense points to a total of 48 deaths, including one in Ubatuba.

The technology at the stations is complemented by automatic rain gauges and soil moisture sensors that allow geotechnical monitoring of collected data on the amount of accumulated rain and water content in the soil. Monitoring provides real-time data via the Geotechnical Network to monitor precipitation and soil moisture on urban slopes in situ. Thus, Cemaden’s professionals can understand the movement of slopes and all other data necessary to understand risk situations and give early warnings.

The Civil Defense of the State alleges that it has issued warnings about the risk via SMS messages on social networks, in the press and to enrollees in the system. However, the posts only commented on the constant heavy rains and did not give the true extent of the landslide risk.

Source: Tec Mundo

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I'm Blaine Morgan, an experienced journalist and writer with over 8 years of experience in the tech industry. My expertise lies in writing about technology news and trends, covering everything from cutting-edge gadgets to emerging software developments. I've written for several leading publications including Gadget Onus where I am an author.

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