ROV-mounted ADCP data (binary PD0 format) acquired at vertical deep-sea habitats, Galapagos Islands, 2023 (FKt230918)

During Falkor, too cruise FKt230918, ADCP data files were acquired on ROV SuBastian dives using a Doppler velocity log (DVL) Sonardyne Syrinx device integrated with a SPRINT Navigation system. The Syrinx system was operated in DVL+ADCP mode, with concurrent ROV DVL navigation and current velocity profiling across the water column. The emitted frequency of the system was 600 kHz, with up to 2.5 Hz ADCP ping rate. The sonar configuration consisted of a 4-beam array with 30° beam angles. Integrated Syrinx and SPRINT INS systems were used to correct ADCP profiles for vessel speed during the acquisition of profiles. The ADCP data files are in an extended PD0 format containing acoustic, GPS and inertial data. Data files were inspected and exported using the Echo Observer for Syrinx software package. ADCP surveys were carried out during dives 578, 582, 584, and 597.