GEOLOGY

Detailed explanation-1: -Because the seismic signal is the first observation available to the TWCs, seismic detection provides the basis for the initial evaluation of the potential for a tsunami.

Detailed explanation-2: -When the centers issue Tsunami Warnings, they are broadcast through local radio and television, wireless emergency alerts, NOAA Weather Radio and NOAA websites (like Tsunami.gov). They may also come through outdoor sirens, local officials, text message alerts, and telephone notifications.

Detailed explanation-3: -DART system buoy. Deep-ocean Assessment and Reporting of Tsunami (DART) systems: A network of DART systems supports the early detection, measurement, and real-time reporting of tsunamis in the deep ocean.

Detailed explanation-4: -Since tsunami waves travel through the entire water column, these pressure sensors will detect the waves. These instruments are called DART buoys, which stands for “Deep-ocean Assessment and Reporting of Tsunamis.”