Seafloor pressure data from two SBE53 pressure gauges on EMSO-Azores observatory, 2019-2020

Date 2021-05-12
Temporal extent 2019-06-20 -2020-09-16
Author(s) Ballu ValérieORCID1, Cannat MathildeORCID2, Wheeler Benjamin2, Legrand JulienORCID3, Sarradin Pierre-MarieORCID3
Affiliation(s) 1 : LIttoral ENvironnement et Sociétés (LIENSs), CNRS/La Rochelle Université, France
2 : Institut de Physique du Globe de Paris, France
3 : Ifremer, Institut Carnot MERS, France
DOI 10.17882/80573
Publisher SEANOE
Keyword(s) Mid-Atlantic Ridge, EMSO-Azores, Lucky Strike, seafloor pressure, geodesy, deformation, vertical motion, earthquakes, monitoring, tides, timeseries
Abstract

This dataset contains seafloor pressure data acquired in the framework of EMSO-Azores observatory between June 2019 and September 2020 using SBE53 pressure gauges deployed on two sites.

West site : The sensor was deployed on an existing benchmark installed with the submersible Nautile in August 2006 during the GRAVILUCK cruise (https://doi.org/10.17600/6010110). The benchmark sits on hard substratum with light hydrothermal sedimentation, on the North-West border of the Lucky Strike lava lake, next to a hydrothermal site.

East site : The sensor was deployed on an existing benchmark installed by freefall in July 2007 during the MOMARDREAM cruise (https://doi.org/10.17600/7030060). The benchmark sits in the axial valley, East of the LuckyStrike volcano in a lightly sedimented area, with apparent pillow lavas.

Instrument location bathymetric map

 

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

SBE53 Bottom Pressure Recorder (BPR). The sensor measures full ocean depth water level. It provides bottom pressure records by combining a time base with low-power frequency-acquisition circuitry, a Paroscientific Digiquartz® pressure transducer, a non-volatile 32 MB FLASH memory and a precision thermometer.

 

Parameters: seafloor pressure in psi and seafloor temperature °Celsius

 

Instrument location : 

  • West site : EMSO-Azores / Lucky Strike lava lake. N37°17.559 / W32°16.885 depth: 1729m
  • East site : EMSO-Azores / Axial valley, East flank of the Lucky Strike volcano. N37°16.986 / W32°14.853 depth: 1984m

 

Installation : SARRADIN Pierre-Marie, LEGRAND Julien (2019) MOMARSAT2019 cruise, RV Pourquoi pas ?, https://doi.org/10.17600/18001110

 

Recovery: SARRADIN Pierre-Marie, LEGRAND Julien (2020) MOMARSAT2020 cruise, RV Pourquoi pas ?, https://doi.org/10.17600/18000684

 

Operating parameters: sampling interval 120sec / measurement duration 30sec

 

Sensor metadata : 

  • Model : Seabird SBE53 SN27
  • Provider : Seabird 2008
Data
File Size Format Processing Access
West site data (CSV format) 21 MB CSV Raw data Open access
West site data (HEX format) 11 MB HEX Raw data Open access
East site data (CSV format) 21 MB CSV Raw data Open access
East site data (HEX format) 11 MB HEX Raw data Open access
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How to cite 

Ballu Valérie, Cannat Mathilde, Wheeler Benjamin, Legrand Julien, Sarradin Pierre-Marie (2021). Seafloor pressure data from two SBE53 pressure gauges on EMSO-Azores observatory, 2019-2020. SEANOE. https://doi.org/10.17882/80573