This dataset contains the pressure and temperature data acquired below seafloor by piezometer ST4-PZ2L-03 since January 2014 following its deployment during the (STEP 2014 cruise)-[https://doi.org/10.17600/14005400]. It operated in an autonomous mode until its connection to the EMSO-Ligure Nice cabled observatory on the 13/09/2017. Sediment pore pressure together with temperature have been measured at 7 different levels below seafloor as shown in the following table: Image Reference: https://www.seanoe.org/data/00404/51529/illustrations/illustration-196.gif. Important Note: This submission has been initially submitted to SEA scieNtific Open data Edition (SEANOE) publication service and received the recorded DOI. The metadata elements have been further processed (refined) in EMODnet Ingestion Service in order to conform with the Data Submission Service specifications.

Pressure and temperature records from the proximity of the Rainbow hydrothermal site.  The record spans from 8th to 26th May 2022. Data were acquired with an RBR Duet pressure sensor lent by PNIO. The pressure sensors was deployed on a broad band OBS (BBOBS) from the INSU national OBS parc at IPGP. Datafiles includes the full raw data file, and a file with only the record at the seafloor, after removing the ascent and the descent of the instrument, attached to the BBOBS) The seafloor position of the OBSs is: 36.23544°N, 36.91036°W, 2505 m waterdepth (~2538 m average depth recorded in this record). Important Note: This submission has been initially submitted to SEAscieNtific Open data Edition (SEANOE) publication service and received the recorded DOI. The metadata elements have been further processed (refined) in EMODnet Ingestion Service in order to conform with the Data Submission Service specifications.