{"ob_id":45190,"uuid":"d8d9bf82d2764f75b5177dadfdfbc258","title":"Ocean bottom node wide-angle seismic data at the Semenov-1 Hydrothermal Site region of the Mid-Atlantic Ridge during the RRS James Cook cruise JC254 (November 2023)","abstract":"The dataset contains wide-angle seismic data from 6 ocean bottom nodes (OBX-90, GEOSPACE) collected during RRS James Cook cruise JC254 in November 2023. The data were acquired at the Semenov-1 Hydrothermal Field region of the Mid-Atlantic Ridge at 13°30'N, and were shot in two sequences (SEM1 and SEM1B). Two GI-guns were used as seismic sources, each with a total volume of 210 cubic inches (105 cu. inch generator, 105 cu. inch injector chamber). The data were recorded at a sampling rate of 2000 Hz (500 µs), with a shot interval of 8 s at a ship speed of 5 knots, resulting in shot interval of ~20.5 m. The data are provided in raw SEGY format, cut into four components (three geophone channels and one hydrophone channel). The SEGY file has a trace length of 10s and 20000 samples. This dataset was collected with an aim to derive a seismic velocity structure of the SEM-1 seafloor massive sulphide deposit region. The aim was to understand the interplay between tectonic faulting, magmatism, and hydrothermal circulation at the ultramafic-hosted hydrothermal systems along slow-spreading ridges. The data were collected as part of a NERC-funded strategic research project called 'Ultramafic-hosted mineral Resource Assessment (ULTRA)', grant reference NE/S004068/1. The data were processed and interpreted as part of a PhD studentship hosted by the University of Southampton, awarded to Szu-Ying Lai, and funded by Equinor A.S, Norway.","keywords":"","publicationState":"citable","dataPublishedTime":"2025-12-11T09:01:10","doiPublishedTime":"2025-12-11T09:01:10","updateFrequency":"notPlanned","status":"final","result_field":{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/45191/?format=json","dataPath":"/bodc/deposits02/uso251016","oldDataPath":[],"storageLocation":"internal","storageStatus":"online","volume":2477414109,"numberOfFiles":51,"fileFormat":".segy; .jpg; .txt"},"timePeriod":"https://catalogue.ceda.ac.uk/api/v2/times/12877/?format=json","geographicExtent":"https://catalogue.ceda.ac.uk/api/v2/bboxes/4965/?format=json","nonGeographicFlag":false,"phenomena":[],"dataLineage":"The data are archived on the British Oceanographic Data Centre (BODC)'s space at the Centre for Environmental Data Analysis (CEDA) and assigned a DOI. No quality control procedures were applied by BODC.","removedDataTime":null,"removedDataReason":"","language":"English","identifier_set":["https://catalogue.ceda.ac.uk/api/v2/identifiers/13668/?format=json"],"projects":[],"observationcollection_set":[],"responsiblepartyinfo_set":["https://catalogue.ceda.ac.uk/api/v2/rpis/216277/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216270/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216271/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216272/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216274/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216275/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216276/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216278/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216273/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216279/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216280/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216281/?format=json","https://catalogue.ceda.ac.uk/api/v2/rpis/216282/?format=json"],"procedureAcquisition":null,"procedureCompositeProcess":null,"procedureComputation":null,"permissions":[{"ob_id":"https://catalogue.ceda.ac.uk/api/v2/observations/2526/?format=json","useLimitation":null,"accessConstraints":null,"accessCategory":"public","accessRoles":null,"label":"public: None group","licenceURL":"http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/","licenceClassifications":"any, attribution required"}],"discoveryKeywords":[]}