FN Archimer Export Format PT Rapport TI R/V YUNUS-S (Istanbul University) cruise report. November 28, 2020 Istanbul – Istanbul BT AF Özeren, Sinan Henry, Pierre Yakupoğlu, Nurettin AS 1:2;2:1;3:2; FF 1:;2:;3:; C2 CEREGE, FRANCE UNIV TECH ISTANBUL, TURKEY UR https://archimer.ifremer.fr/doc/00676/78821/81121.pdf LA English DT Report CR MARSITECRUISE BO Pourquoi pas ? AB The objective of this cruise was to the final recovery, from Imrali Basin of an instrumented frame deployed during a previous Istanbul University R/V Yunus-S cruise, Nov 19-20, 2019. Because of COVID-19 restrictions, the recovery cruise, initially planned in May 2020 was delayed until November The frame was successfully recovered, but instruments were out of battery power. The RBR/Paroscientific (Digiquartz) bottom pressure recorder functioned continuously for 4 months and 10 days, then suffered cyclic perturbations and interruptions due to battery problems until June 24, 2020 when it stopped. The other instrument, a Seaguard doppler recording current meter (RCM) equipped with additional sensors (conductivity, pressure, temperature) provided 4.5 month of hourly data, but with cyclically missing records (1/3) after 1.5 months. PY 2020 DI 10.13155/78821 ID 78821 ER EF