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Lo Bue, Nadia. (2009). Turbidity meter dataset (ECO-BB(RT)D 6000m @ 1 sample / hour) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.
No full textTurbidity measurements were provided by means of an auxiliary turbidity meter sensor (made by WetLabs manufacturer) connected to the CTD probe. The collection period ranges from November 2009 through July July 2010. CTD and turbidity meter have been used in order to monitoring possible variations of bottom sea water masses in an area strongly interested by the mixing of different water masses (Mediterranean and Atlantic waters). Turbidity measurement also provides information about possible resuspension of particle matter due to bottom currents
Embriaco, Davide. (2009). Oxygen meter dataset (AADI Optode 3830 @ 1 Hz) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.
No full textThe Optode sensor measures the dissolved oxygen concentration in sea water using a lifetime-based luminescence quenching principle. The dataset includes a measured device temperature channel and the oxygen saturation values [%] computed from concentration and temperature. The sensor is used to monitor the oxygen concentration dissolved in sea water and to provide oxygen concentration values needed by the methane sensor calibration formula. Raw Oxygen data as recorded by the Optode sensor from 5 October 2009 until 15 March 2010. The data set is continuous with few gaps (0.048% samples lost). The concentration values are not corrected for sea salinity. True concentration values needs post processing elaboration using salinity data [see Optode manual]. The temperature channel measures the device temperature
Embriaco, Davide. (2009). Methane meter dataset (Franatech METS @ 1 Hz) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.
No full textThe Methane sensor provides two output analogue channels (Vmet, Vt) which are sampled at 1Hz by a dedicated Analog To Digital Converter of the SN4 station. From (Vmet, Vt) through a calibration formula, the dissolved methane concentration in sea water can be computed. The purpose of the methane sensor installation on the SN4 observatory is to monitor the variation of methane gas dissolved in sea water. The installation site is rich in gas seepage from seafloor, thus the variation in methane dissolved concentration can provide a mean to monitor gas emission from seabed. This sensor enable us to study methane gas emission dynamic and its correlation with other physical, oceanographical and seismic parameters in the site. The data set is complete. The methane concentration computed from Vmet and Vt is a raw-uncorrected data; to obtain true methane concentration the raw value must be corrected taking into account oxygen concentration, following the device calibration formula. The temperature channel measures the device temperature
Lo Bue, Nadia. (2009). CTD dataset (SBE 16plus @ 1 sample / hour) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.
No full textThe dataset contains sea bottom Conductivity, Temperature and Pressure data (about 1 m above the bottom) acquired through a SBE 16 plus installed on GEOSTAR station. The collection period ranges from November 2009 through July 2010. CTD and turbidity meter have been used in order to monitoring possible variations of bottom sea water masses in an area strongly interested by the mixing of different water masses (Mediterranean and Atlantic waters)
De Caro, Mariagrazia. (2009). Gravimeter dataset (IFSI (INAF) Prototype #2 @ 1 Hz) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.
No full textThe dataset contains relative values of gravity acceleration measured by a prototype of gravity meter, with sensitivity close to 10^-9 g/sqrt(Hz) in the range from 10^-5 to about 1 Hz. The prototype was developed at the Istituto di Fisica dello Spazio Interplanetario (IFSI) of the National Institute of Astro-Physics (INAF). The gravimeter acquired with a sampling rate of 1 Hz. The instrument performs measurements of the Earth gravity acceleration due to low ground movements (tides) and fast ground movements (seismic wave propagation). Systematic noise lasting for 5 seconds is present at start of each daily file due to the midnight clock synchronisation. The 247 daily text files are stored in a folder of 749 MB. In general the gravimetric data shows a good recording quality
Lo Bue, Nadia. (2009). Current meter dataset (Nobska MAVS-3 @ 5 Hz) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.
No full textHigh-frequency current meter (MAVS3 made by NOBSKA manufacturer) was mounted on GEOSTAR to collect data with high sampling rate. It provided punctual current measurements to monitoring the hydrodynamic condition inside the station. The high sampling rate (5Hz) was used in order to better observe possible influences of seawater currents on seismological data
Embriaco, Davide. (2009). Current meter dataset (Nobska MAVS-3 @ 5 Hz) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.
No full textHigh-frequency current meter provides punctual sea current measurements. Monitor the current flow at the SN4 installation site. The high sampling rate (5Hz) was used to monitor the hydrodynamic condition inside the station in order to better observe possible influences of seawater currents on seismological data. Current meter data are available only for three period: 5-14 October 2009, 14-23 February 2010, 4-13 March 2010
Monna, Stephen. (2009). Hydrophone dataset (OAS E-2PD @ 100 Hz) from INGV/GEOSTAR seafloor platform during ESONET-NOE-LIDO project in Iberian Margin site (Gulf of Cadiz), part of EMSO network.
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Embriaco, Davide. (2009). Turbidity meter dataset (ECO-NTU(RT)D 6000m @ 1 sample / 10 min) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.
No full textThe dataset provides the turbidity in the sea water measured by a backscattering meter. Monitor the change in turbidity of sea water. Turbidity data are produced at each minutes 08,18,28,38,48,58 of every hour, then they are acquired and stored by the CTD device. Data are supplied in mV as acquired by the CTD device, and in Nephelometric Turbidity Unit [NTU] using the device calibration formula
Monna, Stephen. (2009). Seismometer dataset (Guralp CMG-40T @ 100 Hz) from INGV/SN-4 seafloor platform during ESONET-MARMARA-DM project in Marmara Sea site (Marmara Sea), part of EMSO network.
No full textThis digital database comprises seismological data recorded continuously during the MARMARA-DM 1 project by a 3 component broadband seismometer. The sensor was installed on a GEOSTAR-class deep-sea multidisciplinary observatory, deployed in the Marmara Sea at a depth of 167 m. The seismometer is installed in a dedicated vessel integrated in a separate structure connected to the observatory via a special mechanical release. To guarantee a good coupling with the sea bottom, the structure is disconnected just after the observatory touch-down and kept linked to the frame by a slack rope (Favali et al., 2006). The sensor was connected to a 24 bit digitizer, and its time reference came from an external rubidium clock connected to the digitizer. The major scientific goal of the SN-4 experiment is to contribute to the knowledge on the relationship between gas seepage and seismic signals. To observe a large variety of seismic signals we use a broadband seismometer. The deployment site is on the sea prosecution of the active North Anatolian fault,which has been the source of many destructive earthquakes, and presents a continuous seismic activity and methane degassing