Portable small ocean bottom seismograph

The invention discloses a portable small ocean bottom seismograph. The seismograph comprises: a plastic apparatus capsule, an electric corrosion releasing mechanism and a sink coupling frame. An acoustic pressure sensor is arranged on a top of a glass cabin ball. An all-attitude high frequency detector, an acoustic communication module, a wireless beacon machine, a GPS, an electronic compass and a power supply is arranged in the glass cabin ball. The sink coupling frame is a pedestal. By using a bonding mode of the all-attitude high frequency detector, an internal space can be greatly saved. An attitude adjustment operation of an internal seismometer can be simplified. Single point connection under the ball is used as a decoupling way so that installation is easy and a structure is stableand reliable. A diameter of the glass cabin ball of the ocean bottom seismograph in the invention is 13 inches. A volume is small and weight is light. Cost is low. The internal structure is compact. An offshore construction is convenient. The apparatus possesses a high resonant frequency. A working frequency is 300Hz. The seismograph is suitable for fine seabed geology structure detection. The three-component high frequency detector and the acoustic pressure sensor can cooperate with various kinds of artificial seismic sources so as to carry out high-efficient and high-density seismic detection and geology investigations.