Seismicity and Noise Recorded by Passive Seismic Monitoring of Drilling Operations Offshore the Eastern Canary Islands

Abstract

Research Article| May 29, 2019 Seismicity and Noise Recorded by Passive Seismic Monitoring of Drilling Operations Offshore the Eastern Canary Islands Arantza Ugalde; Arantza Ugalde Corresponding Author aInstitute of Earth Sciences Jaume Almera – CSIC, Lluís Solé i Sabarís, s/n, 08028 Barcelona, Spain, mruiz@ictja.csic.esantonio@ictja.csic.esbgaite@fomento.escNow at Institute of Marine Sciences - CSIC, Passeig Marítim de la Barceloneta 37‐49, 08003 Barcelona, Spain. Search for other works by this author on: GSW Google Scholar Beatriz Gaite; Beatriz Gaite aInstitute of Earth Sciences Jaume Almera – CSIC, Lluís Solé i Sabarís, s/n, 08028 Barcelona, Spain, mruiz@ictja.csic.esantonio@ictja.csic.esbgaite@fomento.esdNow at Instituto Geográfico Nacional, Calle del General Ibáñez de Ibero, 3, 28003 Madrid, Spain. Search for other works by this author on: GSW Google Scholar Mario Ruiz; Mario Ruiz aInstitute of Earth Sciences Jaume Almera – CSIC, Lluís Solé i Sabarís, s/n, 08028 Barcelona, Spain, mruiz@ictja.csic.esantonio@ictja.csic.esbgaite@fomento.es Search for other works by this author on: GSW Google Scholar Antonio Villaseñor; Antonio Villaseñor aInstitute of Earth Sciences Jaume Almera – CSIC, Lluís Solé i Sabarís, s/n, 08028 Barcelona, Spain, mruiz@ictja.csic.esantonio@ictja.csic.esbgaite@fomento.es Search for other works by this author on: GSW Google Scholar César R. Ranero César R. Ranero bInstitute of Marine Sciences – CSIC, Passeig Marítim de la Barceloneta 37‐49, 08003 Barcelona, Spain, a.ugalde@icm.csic.escranero@cmima.csic.es Search for other works by this author on: GSW Google Scholar Author and Article Information Arantza Ugalde Corresponding Author aInstitute of Earth Sciences Jaume Almera – CSIC, Lluís Solé i Sabarís, s/n, 08028 Barcelona, Spain, mruiz@ictja.csic.esantonio@ictja.csic.esbgaite@fomento.escNow at Institute of Marine Sciences - CSIC, Passeig Marítim de la Barceloneta 37‐49, 08003 Barcelona, Spain. Beatriz Gaite aInstitute of Earth Sciences Jaume Almera – CSIC, Lluís Solé i Sabarís, s/n, 08028 Barcelona, Spain, mruiz@ictja.csic.esantonio@ictja.csic.esbgaite@fomento.esdNow at Instituto Geográfico Nacional, Calle del General Ibáñez de Ibero, 3, 28003 Madrid, Spain. Mario Ruiz aInstitute of Earth Sciences Jaume Almera – CSIC, Lluís Solé i Sabarís, s/n, 08028 Barcelona, Spain, mruiz@ictja.csic.esantonio@ictja.csic.esbgaite@fomento.es Antonio Villaseñor aInstitute of Earth Sciences Jaume Almera – CSIC, Lluís Solé i Sabarís, s/n, 08028 Barcelona, Spain, mruiz@ictja.csic.esantonio@ictja.csic.esbgaite@fomento.es César R. Ranero bInstitute of Marine Sciences – CSIC, Passeig Marítim de la Barceloneta 37‐49, 08003 Barcelona, Spain, a.ugalde@icm.csic.escranero@cmima.csic.es Publisher: Seismological Society of America First Online: 29 May 2019 Online Issn: 1938-2057 Print Issn: 0895-0695 © Seismological Society of America Seismological Research Letters (2019) 90 (4): 1565–1576. https://doi.org/10.1785/0220180353 Article history First Online: 29 May 2019 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Arantza Ugalde, Beatriz Gaite, Mario Ruiz, Antonio Villaseñor, César R. Ranero; Seismicity and Noise Recorded by Passive Seismic Monitoring of Drilling Operations Offshore the Eastern Canary Islands. Seismological Research Letters 2019;; 90 (4): 1565–1576. doi: https://doi.org/10.1785/0220180353 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietySeismological Research Letters Search Advanced Search ABSTRACT In November 2014, a temporary land and marine seismic network was deployed to monitor the drilling of an exploratory well in the Canary Channel (eastern Canary Islands). This region is characterized by low‐seismic activity; however, because of the increased awareness of the potential seismic hazard caused by hydrocarbon exploitation activities, the drilling operations were monitored with an unprecedented level of detail for an activity of this kind. According to the reported earthquakes, there was not a measurable increase in seismicity in the vicinity of the well. Overall seismic activity was low, which is consistent with the historical seismicity records. Harmonic tremor, explained here as resonances of the instrument‐seafloor system generated by bottom water currents in the area, was commonly detected on the ocean‐bottom seismometer (OBS) recordings. The marine network data also revealed dozens of nonseismic short‐duration signals per day that appear similar to other events on OBS recordings throughout the world. We suggest that they may be caused by direct perturbations on the OBS, mostly induced by ocean currents in the Canary Channel. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.