search DOI 10.17882/101792

Autonomous temperature probes data from the EMSO-Azores observatory, 2023-2024

This dataset contains temperature data acquired between july 2023 and august 2024 with an array of 29 autonomous temperature probes installed in smoker orifices, cracks or patches of diffuse hydrothermal venting. We used 5 types of probes (HTW, HTWN, HTNKE, LTW, and LTGrad). Probes locations, acquisition parameters and clock drift values (UTC-timeprobe) are listed in the metadata file.

Data are provided for each deployed instrument as one or two text files, uncorrected for clock drift: temperature data

Disciplines

Physical oceanography

Keywords

Mid-Atlantic Ridge, EMSO-Azores, EMSO, Hydrothermal Vents, Lucky Strike, Eiffel Tower, Crystal, Montsegur, current velocity, current direction, near seafloor seawater temperature, Time-series, MoMARSAT2023, MoMARSAT2024

Location

37.29N, 37.28S, -32.27E, -32.28W

Devices

Parameter

  • vent fluid temperature (°C)

Location

  • Regional node: Emso-Azores
  • Site: Lucky Strike hydrothermal field
  • coordinates: see metadata file

Installation

Cruise: MATABOS Marjolaine (2023) MoMARSAT2023 cruise, RV L'Atalante, https://doi.org/10.17600/18002419

Recovery

Cruise: MATABOS Marjolaine, SARRADIN Pierre-Marie (2024) MoMARSAT2024 cruise, RV L'Atalante, https://doi.org/10.17600/18003300

Operating parameters

·Temperatures are recorded at rates between 1 per 4 minute and 1 per 70 minutes.

Sensor metadata

High-temperature WHOI probes (HTW) contain of 2 J-type thermistors in their rod tip connected to 2 temperature data-loggers (named A & B), 2 data recordings are thus available for each probe. HTW probes record temperatures up to 415°C with an accuracy of ± 1.1°C, a resolution of 0.25°C at 375°C.

New high-temperature WHOI probes (HTWN) contain 1 temperature data-logger and 1 attitude logger to measure absolute orientation (tilt) and acceleration (not used in this survey). The thermocouple in their rod are J-Type. They record temperatures up to 450°C, with an accuracy of ± 0.6°C, a resolution of 0,03°C.

High-temperature NKE probes (HTNKE) record temperatures up to 450°C, with an accuracy of ±0.5°C, and a resolution of 0.1°C.

Low-temperature WHOI probes (LTW) record temperatures up to 125°C, with an accuracy of ±0.22°C, and a resolution of 0.025°C.

LTGrad probes comprise 2 LTiButton probes separated by 7 cm and attached to a 25 to 30 cm-long PVC support. Low-temperature iButton probes (LTiButton) record temperatures up to 85°C, with an accuracy of ±0.5°C, and a resolution of ±0.5°C (8 bits) or 0.0625°C (11 bits).

Sensor setup, time drift and calibration

All probes are synchronized to UTC time before deployment. Temperature readings of WHOI probes are checked with an oven at IPGP whenever the probe is not redeployed... which is not frequent because we do not have many spares. NKE probes are sent back to maker every 3-4 years for battery change and calibration. Clock drift at recovery is listed in the metadata file

Data

FileSizeFormatProcessingAccess
Metadata
180 KoPDF
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Data
4 MoTEXTRaw data
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How to cite
Cannat Mathilde, Demont Antoine, Sarradin Pierre-Marie, Matabos Marjolaine (2024). Autonomous temperature probes data from the EMSO-Azores observatory, 2023-2024. SEANOE. https://doi.org/10.17882/101792

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Oceanographic cruises
MoMARSAT2023
Related datasets
Cannat Mathilde, Fontaine Fabrice, Demont Antoine, Sarradin Pierre-Marie, Matabos Marjolaine (2023). Autonomous temperature probes data from the EMSO-Azores observatory, 2022-2023. SEANOE. https://doi.org/10.17882/96616
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