GEOLOGY

Detailed explanation-1: -Tsunamis are waves set in motion by large and sudden forced displacements of sea water caused by submarine earthquakes, landslides, submarine volcanoes or asteroid impacts (UNISDR, 2009). Tsunamis affect most part of the world, but coastal areas with highest seismic activity are most vulnerable.

Detailed explanation-2: -Tsunamis are giant waves caused by earthquakes or volcanic eruptions under the sea.

Detailed explanation-3: -Upon making contact with the shore, tsunamis can severely alter the coastal landscape through rapid erosion and deposition of sediment. High wave energy may transport coastal vegetation and marine debris and leave in place unstable barren dunes susceptible to further erosion.

Detailed explanation-4: -In addition to loss of life and mass injuries, other potential impacts include damage to and destruction of homes and businesses, ports and harbors, cultural resources, utilities, and critical infrastructure and facilities. There may be loss of access to basic services such as power, sewer, and water.

Detailed explanation-5: -Tsunamis. Tsunamis are water waves that are caused by sudden vertical movement of a large area of the sea floor during an undersea earthquake. Tsunamis are often called tidal waves, but this term is a misnomer.