IDEAS home Printed from https://ideas.repec.org/a/nat/natcom/v13y2022i1d10.1038_s41467-022-31448-4.html
   My bibliography  Save this article

Megathrust reflectivity reveals the updip limit of the 2014 Iquique earthquake rupture

Author

Listed:
  • Bo Ma

    (GEOMAR Helmholtz Centre for Ocean Research Kiel)

  • Jacob Geersen

    (GEOMAR Helmholtz Centre for Ocean Research Kiel
    Kiel University)

  • Dietrich Lange

    (GEOMAR Helmholtz Centre for Ocean Research Kiel)

  • Dirk Klaeschen

    (GEOMAR Helmholtz Centre for Ocean Research Kiel)

  • Ingo Grevemeyer

    (GEOMAR Helmholtz Centre for Ocean Research Kiel)

  • Eduardo Contreras-Reyes

    (Universidad de Chile)

  • Florian Petersen

    (GEOMAR Helmholtz Centre for Ocean Research Kiel)

  • Michael Riedel

    (GEOMAR Helmholtz Centre for Ocean Research Kiel)

  • Yueyang Xia

    (GEOMAR Helmholtz Centre for Ocean Research Kiel)

  • Anne M. Tréhu

    (Oregon State University, College of Earth, Ocean, and Atmospheric Sciences)

  • Heidrun Kopp

    (GEOMAR Helmholtz Centre for Ocean Research Kiel
    Kiel University)

Abstract

The updip limit of seismic rupture during a megathrust earthquake exerts a major control on the size of the resulting tsunami. Offshore Northern Chile, the 2014 Mw 8.1 Iquique earthquake ruptured the plate boundary between 19.5° and 21°S. Rupture terminated under the mid-continental slope and did not propagate updip to the trench. Here, we use state-of-the-art seismic reflection data to investigate the tectonic setting associated with the apparent updip arrest of rupture propagation at 15 km depth during the Iquique earthquake. We document a spatial correspondence between the rupture area and the seismic reflectivity of the plate boundary. North and updip of the rupture area, a coherent, highly reflective plate boundary indicates excess fluid pressure, which may prevent the accumulation of elastic strain. In contrast, the rupture area is characterized by the absence of plate boundary reflectivity, which suggests low fluid pressure that results in stress accumulation and thus controls the extent of earthquake rupture. Generalizing these results, seismic reflection data can provide insights into the physical state of the shallow plate boundary and help to assess the potential for future shallow rupture in the absence of direct measurements of interplate deformation from most outermost forearc slopes.

Suggested Citation

  • Bo Ma & Jacob Geersen & Dietrich Lange & Dirk Klaeschen & Ingo Grevemeyer & Eduardo Contreras-Reyes & Florian Petersen & Michael Riedel & Yueyang Xia & Anne M. Tréhu & Heidrun Kopp, 2022. "Megathrust reflectivity reveals the updip limit of the 2014 Iquique earthquake rupture," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31448-4
    DOI: 10.1038/s41467-022-31448-4
    as

    Download full text from publisher

    File URL: https://www.nature.com/articles/s41467-022-31448-4
    File Function: Abstract
    Download Restriction: no

    File URL: https://libkey.io/10.1038/s41467-022-31448-4?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    References listed on IDEAS

    as
    1. Bernd Schurr & Günter Asch & Sebastian Hainzl & Jonathan Bedford & Andreas Hoechner & Mauro Palo & Rongjiang Wang & Marcos Moreno & Mitja Bartsch & Yong Zhang & Onno Oncken & Frederik Tilmann & Torste, 2014. "Gradual unlocking of plate boundary controlled initiation of the 2014 Iquique earthquake," Nature, Nature, vol. 512(7514), pages 299-302, August.
    2. Gavin P. Hayes & Matthew W. Herman & William D. Barnhart & Kevin P. Furlong & Sebástian Riquelme & Harley M. Benz & Eric Bergman & Sergio Barrientos & Paul S. Earle & Sergey Samsonov, 2014. "Continuing megathrust earthquake potential in Chile after the 2014 Iquique earthquake," Nature, Nature, vol. 512(7514), pages 295-298, August.
    3. Jacob Geersen & César R. Ranero & Udo Barckhausen & Christian Reichert, 2015. "Subducting seamounts control interplate coupling and seismic rupture in the 2014 Iquique earthquake area," Nature Communications, Nature, vol. 6(1), pages 1-6, November.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. Ryuta Arai & Seiichi Miura & Yasuyuki Nakamura & Gou Fujie & Shuichi Kodaira & Yuka Kaiho & Kimihiro Mochizuki & Rie Nakata & Masataka Kinoshita & Yoshitaka Hashimoto & Yohei Hamada & Kyoko Okino, 2023. "Upper-plate conduits linked to plate boundary that hosts slow earthquakes," Nature Communications, Nature, vol. 14(1), pages 1-9, December.

    Most related items

    These are the items that most often cite the same works as this one and are cited by the same works as this one.
    1. J. Ruiz & M. Fuentes & S. Riquelme & J. Campos & A. Cisternas, 2015. "Numerical simulation of tsunami runup in northern Chile based on non-uniform k −2 slip distributions," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 79(2), pages 1177-1198, November.
    2. Ignacia Calisto & Marisella Ortega & Matthew Miller, 2015. "Observed and modeled tsunami signals compared by using different rupture models of the April 1, 2014, Iquique earthquake," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 79(1), pages 397-408, October.
    3. Juan González & Gabriel González & Rafael Aránguiz & Diego Melgar & Natalia Zamora & Mahesh N. Shrivastava & Ranjit Das & Patricio A. Catalán & Rodrigo Cienfuegos, 2020. "A hybrid deterministic and stochastic approach for tsunami hazard assessment in Iquique, Chile," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 100(1), pages 231-254, January.
    4. José Drápela & Ignacia Calisto & Marcos Moreno, 2021. "Locking-derived tsunami scenarios for the most recent megathrust earthquakes in Chile: implications for tsunami hazard assessment," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 107(1), pages 35-52, May.
    5. Claudia Prezzi & Virginia Silbergleit, 2015. "Seismic hazards along Ecuador, Perú and northern Chile (South America)," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 79(2), pages 1159-1175, November.
    6. Ignacio A. Solís & Pedro Gazmuri, 2017. "Evaluation of the risk and the evacuation policy in the case of a tsunami in the city of Iquique, Chile," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 88(1), pages 503-532, August.
    7. Jorge León & Alan March, 2016. "An urban form response to disaster vulnerability: Improving tsunami evacuation in Iquique, Chile," Environment and Planning B, , vol. 43(5), pages 826-847, September.
    8. Karen E Engel, 2016. "Talcahuano, Chile, in the wake of the 2010 disaster: A vulnerable middle?," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 80(2), pages 1057-1081, January.
    9. Patricio Venegas-Aravena, 2024. "Past large earthquakes influence future strong ground motion: Example of the Chilean subduction zone," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 120(12), pages 10669-10685, September.
    10. Cristian Henríquez & Robert Gilmore Pontius & Paulina Contreras, 2024. "Performance of CA_Markov and DINAMICA EGO models to evaluate urban risk in Antofagasta and Mejillones, Chile," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 120(9), pages 8411-8435, July.
    11. G. Kwiatek & P. Martínez-Garzón & D. Becker & G. Dresen & F. Cotton & G. C. Beroza & D. Acarel & S. Ergintav & M. Bohnhoff, 2023. "Months-long seismicity transients preceding the 2023 MW 7.8 Kahramanmaraş earthquake, Türkiye," Nature Communications, Nature, vol. 14(1), pages 1-10, December.
    12. Karen E Engel, 2016. "Talcahuano, Chile, in the wake of the 2010 disaster: A vulnerable middle?," Natural Hazards: Journal of the International Society for the Prevention and Mitigation of Natural Hazards, Springer;International Society for the Prevention and Mitigation of Natural Hazards, vol. 80(2), pages 1057-1081, January.
    13. Pasten, Denisse & Saravia, Gonzalo & Vogel, Eugenio E. & Posadas, Antonio, 2022. "Information theory and earthquakes: Depth propagation seismicity in northern Chile," Chaos, Solitons & Fractals, Elsevier, vol. 165(P2).
    14. Nicolás C Bronfman & Pamela C Cisternas & Paula B Repetto & Javiera V Castañeda, 2019. "Natural disaster preparedness in a multi-hazard environment: Characterizing the sociodemographic profile of those better (worse) prepared," PLOS ONE, Public Library of Science, vol. 14(4), pages 1-18, April.

    More about this item

    Statistics

    Access and download statistics

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31448-4. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.