| Ocean bottom seismometer is directly deployed on the seafloor when used. It is extensively used in the fields of geodynamic, oil and gas exploration and earthquake research. Ocean bottom seismometer (OBS) is now widely used in the exploration of gas hydrate, benefiting from the rapid development of the OBS techniques. In this paper, we provided an overview of the application of OBS in the gas hydrate exploration, from the data acquisition, data processing and velocity inversion perspective. What we focus on is the current state and the challenges. Specifically, we summary the geometry, the pre-processing, mirror imaging and the commonly used inversion method. Moreover, we discussed some future work that may help improve the application of OBS in the gas hydrate exploration. In summary, we suggest conducting the following works: (1) optimize the geometry; (2) develop more advanced wave-field separation method. (3) develop the inversion method based on full waveform and surface wave. |
