What is inertial cavitation?

Some articles on inertial cavitation, cavitation:

Inertial Cavitation
... Inertial cavitation was first studied by Lord Rayleigh in the late 19th century, when he considered the collapse of a spherical void within a liquid ... This phenomenon is coined cavitation inception and may occur behind the blade of a rapidly rotating propeller or on any surface vibrating in the liquid with sufficient amplitude and ... A fast-flowing river can cause cavitation on rock surfaces, particularly when there is a drop-off, such as on a waterfall ...