Improving OBS operations in ultra-deep ocean during the Southern Mariana Trench expeditions

Xin Zeng1, Jian Lin2,3, Min Xu1 and Zhiyuan Zhou1, (1)SCSIO South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China, (2)Key Laboratory of Ocean and Marginal Sea Geology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, China, (3)Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA, United States