SenseFly drones help monitor Lake Winnipeg ice hazards in Switzerland.

2020-09-12

SenseFly drones help monitor Lake Winnipeg ice hazards in Switzerland.

The project, which is part of the Canadian Space Agency's Earth observation applications development program (EODAP), was aimed at identifying and monitoring lake ice levels, as well as detecting cracks and pressure ridges to raise awareness among local communities and first responders about the risks of moving lake ice.

With research predicting a reduction in lake ice mass in the coming years, ice safety is becoming a critical factor for many populations that use the lakes for commercial and recreational activities.

The onset of ice melting, which begins in the spring, is a critical time for ice monitoring, as it can lead to pressure ridges, crevices and cracks, and the exposure of open water. During cold periods, thin ice can also form in cracks that can be covered with snow overnight and create an invisible hazard the next day.

The senseFly eBee Plus drone was used to map the southern basin of Lake Winnipeg. Covering an area of approximately 1 km by 0.8 km in two sections, eBee Plus flew weekly from late February to early May to complete a complete topographic survey. In total, it took 14 surveys to get a complete picture of the area and help create accurate digital terrain models.

The NextGen team was able to collect hundreds of images that were processed using Pix4dapper software to create highly detailed digital surface models showing the location of ice hazards, allowing the team to determine the location of ice ridges and track changes in size from week to week, as well as map safe routes for lake ice.

Source: https://www.sensefly.com/




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