March 2017

Deployment FixO3-RITMARE07. The maintenance campaign carried out during March 2017 (FixRit07) was articulated using two naval vessels: MN Pasquale Cristina and NR Minerva UNO. During this campaign, the following operations were carried out: recovery of the buoy (including acoustic releasers) and of the secondary or deep mooring, ground instrument maintenance and sea retrieval. Due to safety reasons and permissions, the NR Minerva UNO had to be used for deployment of the ballast of the buoy.
The recovery of both anchorages of the Sailor E2-M3A Site began on March 17, 2017, once completed the practical arrangements for embarking the technical staff on board M / P Pasquale and Cristina at the Molfetta Port so as to the MOB. On the 18th, the ship reached the point of the buoy at: 018°04.592'E, 41°30.815'N, with good visibility and good sea conditions. The buoy did not appear to have evidence of damage, apart from the absence of additional plastic shells in the outer casings for the batteries. The support rubber boat was put into the sea, the buoy will be hooked up with a top and the recovery started. The degree of biofouling coverage of the hull was, at first glance, consistent with what is expected after a year staying at sea, considering the oligotrophic characteristics of the area.
All instruments, belonging to both anchorages, have been cleaned, washed and maintained. Specifically, the quality of the recorded data (through pre-processing of the acquired data), battery life and residual battery charge at data discharging were verified. All the CTDs were supplied with new batteries and were re-programmed to start recording from 26-03-2017 00:00:00. Both moorings were deployed with MN Pasquale Cristina on March 25th.
As mentioned before the buoy ballast was deployed with NR Minerva UNO in collaboration with ISMAR in Bologna due to safe reason, its weight was around 2 TONs. The operations took place on March 22, 2017 from 15:30 to 17:30. The ballast release took place at the point with coordinates 041° 31.00'N and 018° 05.00'E (depth 1180 m). After the sea launch, a CTD profile was performed for sensors testing.




















October-November 2015

Cruise Report
FixO3 - Ritmare - 05
The FixO3-RITMARE05 maintenance cruise was carried out in the southern Adriactic Sea in the framework of the COMBO TNA proposal : “COMbined testing of new acoustic profilers with Biochemical Optodes in the Adriatic Sea [COMBO] “. The FIXO3- RITMARE05 cruise has been held successfully on board the R/V OGS-Explora from the 26 October to 4 November 2015. The principal aim of the oceanographic campaign was the complete maintenance of the multi-parameter moorings constituting the SAILOR-E2M3A Site and the monitoring of the properties of the western area of the southern Adriatic by means of the repeated Bari Dubrovnik transect (only in Italian waters).
The high sea temperatures recorded during this summer resulted in extremely high biofouling the covered most of the instruments positioned in the buoy tube and surface cage. Following the best practices procedures already in act, on this occasion inter-calibration tests have been conducted to compare and verify measurements made by CTD’s installed on the moorings with those made with the CTD 9/11 probe. The latter normally used as control probe. Two tests were conducted: the first immediately after the recovery of the mooring, instruments using the same batteries and the second before the redeployment with new batteries and cleaned instruments. In both case the sampling time was set to 5’.
For both tests the mooring self-recording instruments were mounted on the SBE32 Carousel sampling device together with the CTD 9/11 probe and lowered at 300 m for 1 hour in the first case and at 1000m for 45minutes. Water samples for dissolved oxygen and salinity calibration were also taken. The results will give valuable information on the accuracy of the recorded time series. Finally, a drifter of the EuroARGO program was released in the area of the southern Adriatic Pit.






April 2015

Cruise Report
FixO3 - Ritmare - 04
The E2M3A observatory participates to the first TNA (Trans National Access) call, receiving the proposal of Aanderaa: “COMbined testing of new acoustic profilers with Biochemical Optodes in the Adriatic Sea [COMBO] “.
It consists of the deployment of a SeaGuardII DCP equipped with O2, pCO2 and pH sensors, aiming at testing the newest Aanderaa development in clear/oligotrophic waters.
Due to its characteristics the site offers excellent possibilities for clear water testing of Doppler Profiler technology in the surface mixed layer. The E2-M3A operates in an area covered by multidisciplinary surveys (ship cruises, glider surveys, bio-floats, satellites) creating an exciting network of measurements for which, a comparison with the SeaGuardII DCP data, will provide valuable information about seasonal dynamics of the upper mixed layer.
A contribution to the assessment of the carbon cycle in the surface zone and in conjunction with the Adriatic deep-water formation process will offer new possibilities in understanding the system. The study of rapid changes in the carbon cycle in the upper mixed layer will be monitored with the help of the optode technology, which can sample much faster than existing technologies.
In this context, we have carried out the FixO3 Ritmare04 oceanographic maintenance cruise, held between March 24th and April 1st, 2015. On this occasion, the SeaGuardII was deployed and the instrument covered with copper in order to minimize the fouling impact.
In addition to this activity, the maintenance of the site have been performed so as intercalibration tests immediately after and before the deployment of the mooring chain and buoy.
The SBE37-ODO, pCO2 Proceanus and the SAMI-pH previously placed at the steel cage (15m depth) were positioned into a new cylinder steel cage on the ballast of the buoy at 2m. A SBE37-CT was placed in the cage at 15m. Finally, a drifter of the EuroARGO program was released at the sea
















February 2015

On February 19 the surface buoy of the SAILOR E2M3A site started drifting, unmoored, for unknown reasons. On February 21, it has been recovered by the trawler "Pasquale e Cristina" and towed to the port of Molfetta. The buoy will be repositioned at sea during next research/maintenance cruise, scheduled from March 24 to April 1 aboard the R/V OGS-Explora.


September 2014

Cruise Report
FixO3 - Ritmare - 03
The RITMARE-FIXO3 cruise has been held successfully on board the R/V OGS-Explora from 8 to 14 September 2014. The principal aim of the oceanographic campaign was the complete maintenance of the multiparameter moorings constituting the SAILOR-E2M3A Site.
Furthermore, on this occasion specific intercalibration tests have been conducted to compare and verify measurements made by CTD’s installed on the moorings with those made with the CTD 9/11 probe. The latter normally used as control probe. For this test the mooring self-recording instruments were mounted on the SBE32 Carousel sampling device together with the CTD 9/11 probe and lowered at 200 m for 45 minutes. Water samples for dissolved oxygen and salinity calibration were also taken. The results will give valuable information on the accuracy of the recorded time series.









March 2014

OGS Personnel was embarked on the R/V URANIA during the SIRIAD-14 cruise to perform the maintenance of the site. During the cruise, the transmission of data in real time has been activated, and the system has been enriched with new sensors CO2, pH, oxygen that together with the already installed CTD will provide value information for the study of the surface layer and the carbon cycle.



November 2013

Cruise Report
Matis - Ritmare - 02

During the Ritmare cruise onboard the R/V OGS-Explora the observing capability of the E2-M3A system has been enhanced with the redeployment of the surface buoy. The subsurface mooring was enhanced with two sediment traps at 150m and 1150m depth



March 2013

The subsurface mooring has been successfully recovered and redeployed in March 2013 during the Medges-Ritmare cruise. The maintenance was done with the R/V OGS Explora.





FixO3 is a FP7 Collaborative Project coordinated by the
National Oceanography Centre, Southampton, UK
For more information please contact: V. Cardin
Last update: May 16, 2017 -- Webmaster: R.Iungwirth