Global Ocean Analysis Offers Cost-Effective Seafloor Positioning Solution

A groundbreaking study published in Satellite Navigation reveals that global ocean analysis products can replace costly in-situ sound speed measurements for precise seafloor positioning, achieving centimeter-level accuracy. This innovation, utilizing the HYbrid Coordinate Ocean Model (HYCOM), could revolutionize marine geodetic surveys by significantly reducing costs and logistical challenges, especially for unmanned vehicles and long-term monitoring. The research, conducted by teams from the First Institute of Oceanography and Shandong University of Science and Technology, demonstrates that HYCOM-derived sound speed profiles (SSPs) match the accuracy of traditional in-situ measurements, offering a cost-effective alternative for scientific and industrial applications.

The study's findings highlight the potential for broader access to seafloor geodetic technology, benefiting earthquake-prone regions, offshore industries, and deep-sea exploration. Dr. Yanxiong Liu, the study's corresponding author, emphasizes the practical advantages of this method, which not only cuts costs but also enhances the feasibility of frequent, high-precision surveys. This advancement could significantly impact our understanding of seafloor science and tectonic movements, providing valuable tools for seismology scientists and marine resource exploration.