Design of Sunda Straits automatic water level station network

The Sunda Strait is a region that has the potential for tsunamis due to tectonic and volcanic activities. Anak Krakatau landslide is one of the causes of Tsunamis that require accurate early detection by combining data from seismometers and other sensors. One of the instruments that can be implemented in the verification of early detection of Sunda Strait Tsunami waves is a network of automatic water levels that can measure changes in water level every one minute. The system is designed using ultrasonic water level sensors and rainfall sensors. The sensors are connected to a data logger for processing data with a solar power supply panel. The automatic water level network is installed in 3 locations around Anak Krakatau. Measurement data from sensors is sent to BMKG servers for further processing using 2G communication modules. The results of the system design show that the network of automatic water level works properly, where the pattern of water level patterns every minute from each station can be seen.