Advances and prospects of the a shore-based video monitoring technology on beach research

The coastal zone, which is positioned at the dynamic interface of between land and sea, stands out as one of the most vibrant and crucial natural regions on Earth. Subject to the interactive forces of land, sea, and atmosphere, it's the geomorphic and ecological systems of the coastal zone are exceptionally delicatefragile. Beaches, which are characterized by the unique scenic attributes and susceptibility to coastal landform changes, act as the frontline defense against ocean hydrodynamics forces and serve as guardians of the coastal ecological environment. Simultaneously, they play a pivotal role in fostering green coastal economies. Strengthening the monitoring and research of beaches has become an imperative requirement for achieving harmonious coexistence between humans and nature. Traditionally, beach monitoring has predominantly relied on labor-intensive field measurements, resulting in time-consuming efforts and limited spatiotemporal resolution in data sampling. The current bottleneck in beach research lies in the challenge of acquiring multidimensional, high-quality, and long-duration datasets. Shore-based video monitoring, which is an optical remote sensing technology designed for coastal process observation and quantitative data extraction, provides a new and effective solution for continuous beach monitoring. This technology, born which was developed in the United States in the 1980 s with Argus as its paradigmatic representative, has proliferated globally over the past four decades. At present, It it is now universally acknowledged as a potent tool in the field of nearshore observation. While theAlthough research on shore-based video monitoring technology started relatively late in China, it has developed rapidly. In particular, the joint efforts of the Institute of Third Institute of Oceanography of China, Hohai University, and Xiamen University led to the independent development of the Coastal Shore-based Video Imagery Monitoring SystemCOSVIMS. The progress of shoreShore-based video monitoring technology has witnessed achieved significant progressstrides. Algorithmic advancements related to sandy coastlines, intertidal zone topography, nearshore wave propagation & and dissipation processes, nearshore currents, and bathymetry extraction have played a crucial roles in enhancing the capabilities of this technology. These algorithms not only ensure accuracy but also enable a more comprehensive understanding of coastal dynamics. The applicability of video monitoring technology spans covers various scenarios, including beach management, coastal engineering construction and assessment, storm surge process observation, and aeolian sand transport process monitoring. Looking ahead, the future Future trends of shore-based video monitoring technology are promising, especiallyparticularly in the context of the accelerating coastal urbanization in China. The contradictions Contradictions between the development and protection of coastal zone resources and the environment are becoming increasingly pronounced. The widespread adoption of shore-based video monitoring technology holds exhibits high practical significance and value for the research and protecting protection the of coastal zones along China. Breakthroughs in emerging technologies, such as artificial intelligence, 5G, big data, and Cloudcloud, coupled with the growing demand for coastal zone resource and environmental monitoring, are paving the way for greater development opportunities for shore-based video monitoring technology. In conclusion, the evolution of shore-based video monitoring technology signifies a transformative era in coastal research and management. As technology continues to advance, it opens new frontiers for understanding and preserving the delicate balance between coastal development and environmental conservation are opened. The journey development from direct measurements to advanced remote sensing exemplifies the evolution toward more efficient and sustainable coastal research methodologies. © 2024 Science Press. All rights reserved.