Identify the statement that is true about tsunami events. a. The velocity of a tsunami wave increases when the wave moves from open ocean to shallower water.
b. Tsunamis may be generated by underwater earthquakes, eruptions of island volcanoes, or submarine landslides.
c. Tsunami waves that affect the local area around an earthquake's epicenter are called far-field tsunamis.
d. The wavelengths of tsunami waves are often shorter than those of wind-driven waves.