Two high-resolution bathymetry investigations of Lion City

The geological and hydrological pressures were generally neglected primarily due to the challenging nature of the monitoring task in an underwater setting, particularly over a large-scale region. Using repeated multibeam sonar measurements, we developed an uncertainty-based approach for interpreting the geomorphic change of the Lion City, an ancient Chinese city that is submerged in Qiandao lake. Repeated topographic surveys with a 14-year interval coupled with underwater video and photography data revealed that instead of the anthropogenic and biochemical pressures, the instability of the hill slope adjacent to the city poses an imminent threat to the heritage.

地质与水文压力普遍被忽视，主要由于在水下环境中进行监测任务的艰巨性，尤其是在大规模区域。通过反复的多波束声呐测量，我们开发了一种基于不确定性的方法来解读狮城（一古代中国城市，位于千岛湖水下）的地理形态变化。14年间隔的重复地形测量，结合水下视频和摄影数据，揭示了与人为和生物化学压力相反，城市相邻的山坡不稳定构成了对文化遗产的紧迫威胁。