The invention relates to an apparatus and method for the in-situ real-time observation of
submarine sand
waves. The apparatus includes an
observation system and auxiliary devices. The auxiliary devices comprise an auxiliary ship and a hoisting device; the
observation system includes a gravity anchor, a
fiber grating floating earth weight sensor, a
Kevlar cable, an
underwater acoustic releaser group, a lower floating ball bracket, a wave and
tide gauge, an upper floating ball bracket, an MRU three-dimensional attitude sensor, a
satellite communication
machine, an
imaging sonar, a
solar cell anda main floating body. The principle of the apparatus and the method is characterized in that
submarine pressure change caused by the migration of the
submarine sand
waves is observed, the time interval, elevation and
wavelength data of two adjacent extreme submarine pressures are analyzed, and the migration rate of the submarine sand
waves is calculated. The method includes the following steps: selection of an
observation point and a
deployment time,
system deployment,
recovery, and
data processing. The apparatus and the method provide a new idea for the in-situ real-time observation of the submarine sand waves, have the characteristics of simple and easy device, long in-situ real-time measurement period and wide applicable water range, and can realize the in-situ real-time long-term observation of the migration of the submarine sand waves.