Moored current and temperature measurements in a submarine canyon of the Eastern Ligurian Sea, November 2020-October 2022
|Temporal extent||2020-11 -2022-10|
|Author(s)||Borghini Mireno1, Bordone Andrea2, Ciuffardi Tiziana2, Kokkini Zoi1, Demarte Maurizio3, Ivaldi Roberta3, Delbono Ivana2, Berta Maristella1, Locritani Marina4, Vetrano Anna1, Raiteri Giancarlo2, Muccini Filippo4, Pannacciulli Federica2, Marini Davide5, Caprino Giovanni5|
|Affiliation(s)||1 : Consiglio Nazionale delle Ricerche- Istituto di Scienze Marine (CNR-ISMAR) Sede Secondaria di Lerici, Forte Santa Teresa s.n.c, 19032, Lerici, La Spezia , Italy
2 : ENEA - Centro Ricerche Ambiente Marino Santa Teresa, Via S. Teresa, 19032 Lerici, La Spezia, Italy
3 : Istituto Idrografico della Marina, P.sso dell’Osservatorio 4, 16134 Genova, Italy
4 : Istituto Nazionale di Geofisica e Vulcanologia, Via di Vigna Murata 605 00143 Roma, Italy
5 : Distretto Ligure delle Tecnologie Marine scrl, Viale Nicolò Fieschi 18, 19123 La Spezia, Italy
|Keyword(s)||Levante Canyon, Western Mediterranean Sea, Mooring observatory, Currents, Salinity, Temperature|
This data set includes n.8 files containing observational data of a stand-alone mooring, at about 600 m depth along the Levante Canyon of the Eastern Ligurian Sea (44°05.443’N, 9°29.900’E, western Mediterranean). The time series covers the period from November 2020 to October 2022. The dataset includes measurements conducted with two current meters (ADCP RDI QuarterMaster and Nortek Continental) and three CTD probes (SBE37), and provides information about the hydrodynamics and thermohaline properties across almost the entire water column. The mooring is configured and maintained for continuous long-term monitoring being in a particular deep-sea area (about 600 m water depth), that acts as a hot-spot of biodiversity, hosting valuable and vulnerable ecosystems, such as the deep-living cold-water corals. Data are described in the data paper Ciuffardi et al., (In prep): Deep water hydrodynamic observations around a Cold-Water Coral habitat in a submarine canyon of the Eastern Ligurian Sea (Mediterranean Sea).
|Utilisation||Data are published without any warranty, express or implied. The user assumes all risks arising from his/her use of data. Data are intended to be research-quality and include estimates of data quality and accuracy, but it is possible that these estimates or the data themselves contain errors. It is the sole responsibility of the user to assess if the data are appropriate for his/her use, and to interpret the data, data quality, and data accuracy accordingly. Authors welcome users to ask questions and report problems.|
|Acknowledgements||The Levante Canyon Mooring is co-financed by DLTM through funding obtained from Regione Liguria (PAR-FSC 2007-2013 funds). The authors are deeply indebted to the Captain and the crew of the CNR R/V "G.DallaPorta" and MM "Leonardo" for continuous support during the whole measurement/deployment phases.|
The upward-looking ADCP used is an RDI QuarterMaster (Teledyne RD Instruments USA, Poway, California), using a four-beam, convex configuration with a beam angle of 20° and a working frequency of 153.6 kHz. The instrument is moored at a mean nominal depth of 325 m with a number of depth cells set to 44 and a cell size of 8 m. Velocity accuracy is ±1 %, ±5 mm/s. The temperature sensor has the following characteristics: range -5° to 45°C, precision ±0.4°C, resolution 0.01°.
The downward-looking ADCP used is a Nortek Continental (Nortek AS, Norway), using a four-beam, convex configuration with a beam angle of 25° and a working frequency of 190 kHz. The instrument is moored at a mean nominal depth of 406 m with a number of depth cells set to 30 and a cell size of 8 m. Velocity accuracy is ±1 % of measured value. The temperature sensor has the following characteristics: range -4° to 40°C, precision 0.1°C, resolution 0.01°.
The sampling interval is 2h for the RDI and 1h for the Nortek and the sound speed is computed by the pressure and temperature sensors embedded at the transducer head joint to the assumed salinity.
The three SBE37 CTDs deployed have the following characteristics for conductivity and temperature sensors respectively: range 0 to 70 mS/cm and -5 to 35 °C, accuracy 0.003 mS/cm and 0.002 °C, resolution 0.0001 mS/cm and 0.0001 °C. The probes are also equipped with a Strain-gauge pressure sensor with an accuracy of ± 0.1% of full-scale range.