ABSTRACT
Tsunami warning is a key to prevent disasters. The source of tsunami is usually an underwater event that may exist significantly far from the shore. Due to several limitations of underwater environment the conventional methods cannot perform extensive monitoring. We propose underwater acoustic sensor network (UWASN) for real-time monitoring of tsunami parameters. The network is capable of operating at remote locations. The cluster heads (CHs) are assigned higher transmission power to reach the sink node. Sensor nodes (SNs) are placed on the seafloor for parameter monitoring. Network provides circular coverage of 2 km diameter on the seabed. With clustering reduced transmission range is required for the sensor nodes. This improves the network lifetime. The sensor nodes also adjust the transmission power to enable concurrent transmission and reduce the energy consumption. Concurrent transmission is also achieved among opposite CHs. Concurrent transmissions reduce the network delay. Thus the proposed network aids in immediate warning and improved parameter analysis.
