Analysis of sea condition of Jiaolong deep-sea manned submersible operating in the South China Sea

Liu Xiaohui,Yang Lei,Qin Shengjie,Qi Haibin,Zhang Qi,H Zhang,H Abdul Aziz

doi:10.1051/e3sconf/202127601022

Abstract

The South China Sea is the sea area with the largest area, the largest depth, the most abundant oil and gas resources and the most comprehensive biological species in China. The further exploration of the South China Sea with manned submersible and other major deep-sea equipment is of great significance to China's deep-sea scientific investigation. In this paper, Jiaolong manned submersible was taken as an example. In order to explore the operation window to guarantee the operation safety of manned submersible and improve the efficiency of voyage scientific investigation, this paper combined the global wave return data and the wave data based on satellite remote sensing to focus on the Marine environment characteristics in the South China Sea. According to the operational design parameters of Jiaolong, in the South China Sea, the most appropriate operating time window is from April to September, and the rest of the time, proper sea conditions should be selected for the operation.

Highlights

Located in the southern part of the Chinese mainland, the South China Sea is the western part of the Pacific Ocean and one of the three major marginal seas of China
According to the operation characteristics of Jiaolong manned submersible and the basic requirements of operation sea conditions, combined with the global wave return data and the wave data based on satellite remote sensing, this paper focuses on the Marine environment characteristics of the South China Sea, so as to provide reference for the selection of the time window for the follow-up operation of Jiaolong
3.1 Analysis of monthly mean sea waves in the South China Sea over the years The size of the sea wave is very important to the operation safety of the submersible in the stage of laying and recovery.During the laying stage of the submersible, the A-frame hoisting submersible is put out to the outboard

Summary

Introduction

Located in the southern part of the Chinese mainland, the South China Sea is the western part of the Pacific Ocean and one of the three major marginal seas of China. The natural sea area of the South China Sea covers an area of about 3.5 million square kilometres, among which China's territorial sea covers an area of about 2.1 million square kilometres. The South China Sea is rich in Marine oil, gas and mineral resources, as well as tropical and subtropical biological resources. It is the most important island and tropical ecosystem distribution area in China[1]. According to the author's many dives in the South China Sea as a pilot of Jiaolong, the impact of sea waves and currents on the safety of submersible is the biggest one in the stages of layout, recovery and floating[3]. According to the operation characteristics of Jiaolong manned submersible and the basic requirements of operation sea conditions, combined with the global wave return data and the wave data based on satellite remote sensing, this paper focuses on the Marine environment characteristics of the South China Sea, so as to provide reference for the selection of the time window for the follow-up operation of Jiaolong

Data and analysis methods

Data comparison results and conclusions

Safety analysis of sea operation of Jiaolong

Conclusion