Turbidity and chlorophyll, data from the EGIM deployed on EMSO-Azores observatory, 2017-2018

Date 2018-09
Temporal extent 2017-07-12 -2018-08-12
Author(s) Sarradin Pierre-Marie1, Legrand Julien1, Moreau Bertrand1, Lanteri Nadine1, Cannat Mathilde2
Affiliation(s) 1 : Ifremer, France
2 : CNRS, IPGP, France
DOI 10.17882/56525
Publisher SEANOE
Keyword(s) Mid-Atlantic Ridge, EMSO-Azores, Lucky Strike, turbidity, Chlorophyll, EGIM, Time-series, MoMAR, MoMARSAT2018, EMSOdev, EMSO

This dataset contains turbidity, chlorophyll and the associated sensor raw data acquired between July 2017 and August 2018 on EMSO-Azores observatory by the EGIM. Tubidity is one of the 7 core parameters monitored by the EGIM, EMSO Generic Instrumental Module.

The EGIM prototype was deployed at Lucky Strike hydrothermal vent site, 25 m south west of the active edifice Tour Eiffel, to monitor local hydrodynamic variability and complement the data obtained by the numerous sensors set on this site: oceanographic mooring deployed south of the vent field, the multidisciplinary Seamon East node, autonomous current meters, array of temperature probes…

Licence CC-BY
Utilisation EMSO data are published without any warranty, express or implied. The user assumes all risk arising from his/her use of EMSO data. EMSO 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. EMSO welcomes users to ask questions and report problems to the contact addresses listed in the data files or on the EMSO web page.
Sensor metadata


  • Wave length 1 (nm)
  • Ntu_signal_1 (NTU)
  • Wave_length_2 (nm)
  • Ntu_signal_2 (NTU)
  • NTUThermistor
  • Sea water temperature (°C)


  • Regional node: Emso-Azores
  • Site: Lucky Strike
  • Node: SeaMoN East
  • Coordinates: 37°17,366 N and 32°16,654 W
  • Depth: 1700 m



Operating parameters

  • Measurement duration: 30 sec
  • Sampling period: 15 minutes every
  • Anti-fouling device: No

Sensor metadata

  • Type: Turbidity and chlorophyll sensor
  • Provider: WETlabs
  • Model: ECO NTUrtd
  • Serial number: 648

Test and calibration

  • WETlabs, Characterization sheet (November 2014)
  • Ifremer, Pressure qualification (Oct. 2016)

Data management

  • Real time data transmission: No
  • Data storage in the Communication and storage unit (COSTOF2): Full
  • Data storage in the instrument: No
File Size Format Processing Access
Raw data 1 MB CSV Raw data Open access
Characterization sheet 195 KB PDF Open access
144 KB PDF Access on demand
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How to cite 

Sarradin Pierre-Marie, Legrand Julien, Moreau Bertrand, Lanteri Nadine, Cannat Mathilde (2018). Turbidity and chlorophyll, data from the EGIM deployed on EMSO-Azores observatory, 2017-2018. SEANOE. https://doi.org/10.17882/56525