Fig. 1: Measured (effective) attenuation length at different neutrino telescope sites.
From: A multi-cubic-kilometre neutrino telescope in the western Pacific Ocean
Effective attenuation lengths measured by two independent optical systems, the PMT (black circle) and camera (black square) in T-REX for three wavelengths (405 nm, 450/460 nm, 525 nm), as summarized in Table 2. Data points and error bars indicate the best-fit results and 68% confidence-level regions in the χ2 fitting. The results obtained by the camera system use 20 images for each wavelength, while the results from the PMT system are measured using data samples with ~107 detected photons per wavelength. Measurements from KM3NeT32,35, P-ONE33, ANTARES31 and Baikal-GVD34 are shown for comparison. Also shown is the average observable Cherenkov spectrum from simulation, in which the optical properties measured by T-REX are used.
