Measurements have been made of the uncollimated (poor geometry) 1/e transmission distance of light in seawater at ~1200- and 780-m depths, 34 km west of Keahole Point, Hawaii. The measurements were made with 480-nm blue-green light through path lengths of 84.0 and 7.86 m. Transmission distance is determined to be 25.9 m ±1 m at 1.2-km depth and 24.4 m ±1 m at 780-m depth.
© 1984 Optical Society of America
Hugh Bradner and Grant Blackinton, "Long base line measurements of light transmission in clear water," Appl. Opt. 23, 1009-1012 (1984)