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Earthquake Ground Effects and Intensity of the 16 April 2016 Mw 7.8 Pedernales, Ecuador, Earthquake: Implications for the Source Characterization of Large Subduction Earthquakes

2018; Seismological Society of America; Volume: 108; Issue: 6 Linguagem: Inglês

10.1785/0120180051

1943-3573

Kervin Chunga, Franz Livio, Maurizio Mulas, Felipe Ochoa‐Cornejo, Davide Besenzon, Maria Francesca Ferrario, Alessandro Maria Michetti,

Geological and Tectonic Studies in Latin America

Research Article| October 09, 2018 Earthquake Ground Effects and Intensity of the 16 April 2016 Mw 7.8 Pedernales, Ecuador, Earthquake: Implications for the Source Characterization of Large Subduction Earthquakes Kervin Chunga; Kervin Chunga aDepartamento de Construcciones Civiles, Facultad de Ciencias Matemáticas, Físicas y Químicas, Universidad Técnica de Manabí, Avenue José María Urbina, Portoviejo 130105, Ecuador, kchunga@utm.edu.ec Search for other works by this author on: GSW Google Scholar Franz Livio; Franz Livio bDipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, Via Valleggio 11, 22100 Como, Italy, Franz.livio@uninsubria.itFrancesca.ferrario@uninsubria.itAlessandro.michetti@uninsubria.it Search for other works by this author on: GSW Google Scholar Maurizio Mulas; Maurizio Mulas cFacultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo, Km 30.5 Vía Perimetral, P.O. Box 09‐01‐5863, Guayaquil, Ecuador, mmulas@espol.edu.ecbesenzon@espol.edu.ec Search for other works by this author on: GSW Google Scholar Felipe Ochoa‐Cornejo; Felipe Ochoa‐Cornejo dDepartment of Civil Engineering, School of Physical and Mathematical Sciences, University of Chile, Blanco Encalada 2002, 4th Floor, Santiago, Chile, fochoa@ing.uchile.cl Search for other works by this author on: GSW Google Scholar Davide Besenzon; Davide Besenzon cFacultad de Ingeniería en Ciencias de la Tierra, Escuela Superior Politécnica del Litoral, ESPOL, Campus Gustavo Galindo, Km 30.5 Vía Perimetral, P.O. Box 09‐01‐5863, Guayaquil, Ecuador, mmulas@espol.edu.ecbesenzon@espol.edu.ec Search for other works by this author on: GSW Google Scholar Maria Francesca Ferrario; Maria Francesca Ferrario bDipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, Via Valleggio 11, 22100 Como, Italy, Franz.livio@uninsubria.itFrancesca.ferrario@uninsubria.itAlessandro.michetti@uninsubria.it Search for other works by this author on: GSW Google Scholar Alessandro Maria Michetti Alessandro Maria Michetti bDipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, Via Valleggio 11, 22100 Como, Italy, Franz.livio@uninsubria.itFrancesca.ferrario@uninsubria.itAlessandro.michetti@uninsubria.it Search for other works by this author on: GSW Google Scholar Bulletin of the Seismological Society of America (2018) 108 (6): 3384–3397. https://doi.org/10.1785/0120180051 Article history first online: 09 Oct 2018 Cite View This Citation Add to Citation Manager Share Icon Share MailTo Twitter LinkedIn Tools Icon Tools Get Permissions Search Site Citation Kervin Chunga, Franz Livio, Maurizio Mulas, Felipe Ochoa‐Cornejo, Davide Besenzon, Maria Francesca Ferrario, Alessandro Maria Michetti; Earthquake Ground Effects and Intensity of the 16 April 2016 Mw 7.8 Pedernales, Ecuador, Earthquake: Implications for the Source Characterization of Large Subduction Earthquakes. Bulletin of the Seismological Society of America 2018;; 108 (6): 3384–3397. doi: https://doi.org/10.1785/0120180051 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 SocietyBulletin of the Seismological Society of America Search Advanced Search Abstract Starting on the day after the mainshock, we mapped in the field and compiled all the available observations on earthquake environmental effects (EEEs) caused by the Mw 7.8 subduction earthquake that hit the coastal region of Ecuador on 16 April 2016 (the Pedernales earthquake). These effects include: (a) permanent ground deformation, (b) open cracks, (c) liquefaction, (d) landslides, and (e) tsunami waves. We use these observations to evaluate the macroseismic field of the Environmental Seismic Intensity (ESI‐07) scale and compare our results with published macroseismic data collected using traditional damage‐based intensity scales. We found systematic difference in the assessed earthquake intensity and in the intensity attenuation with distance. A comparison of our dataset with the macroseismic data of six instrumental large‐subduction earthquakes that occurred between Ecuador and Chile suggests that, for the Pedernales earthquake, the ESI‐07 works better in the near field, whereas damage‐based scales are more reliable in the far field. Therefore, we generate a single integrated intensity dataset for the Pedernales earthquake, including data measured with the European Macroseismic Scale 1998 (EMS‐98), the modified Mercalli (MM) scale, and the ESI‐07 scale. This new integrated macroseismic field provides reliable and comparable information on the seismogenic source, suggesting that a similar approach could be successfully applied to refine the source model of past subduction earthquakes in Ecuador and elsewhere. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.