Nozomu Urahata, and Kenji Okajima. “EVALUATION OF THE EFFECT OF TURBID WATER IN CANALS ON UNDERWATER ULTRASONIC ROUGHNESS MEASUREMENTS”. GEOMATE Journal 26, no. 118 (June 30, 2024): 1–8. Accessed October 11, 2025. https://geomatejournal.com/geomate/article/view/4592.