Maule Earthquake Workshop
University of Concepcion , BiobĂ­o , Chile

Workshop on the 2010 Maule Earthquake: 

Lessons Learned, New Discoveries, Future Advances

March 4-8, 2013

Concepción, Chile

 

The goal of this workshop was to share our scientific discoveries gleaned since the Maule earthquake, evaluate our community response to the earthquake, and to look forward to future directions. Approximately 60 participants attended, including representatives from all of the aftershock teams, a large contingent of Chilean researchers and students, and three students from the US. Tremendous progress has been made in our understanding of great subduction zone earthquakes and the subduction process in the last few years, in large part due to the occurrence of several magnitude >8.5 earthquakes including the Maule 27 February 2010 M=8.8 earthquake off the coast of south central Chile. The three years elapsed since the occurrence of the largest earthquake in South America during the 21st century, has given us the opportunity to examine what has been learned from this earthquake, not only in terms of scientific discovery but also in terms of coordinating a rapid response after a major earthquake. A rapid response following the earthquake resulted in geological observations, short period and broad-band seismic data (including OBS), GPS, InSAR, tide gauge and tsunami runup data that have led to new scientific discoveries.

The unprecedented international field-deployment effort by the seismological community immediately after the earthquake allowed the interaction of many groups from different countries. The data was open for the entire community (independently of their participation) as soon as it could be archived. An additional goal of this workshop was to evaluate this response and develop plans to improve it for future earthquakes.

An opening ceremony at the University of Concepcion on Monday evening included talks by representatives of the University and ONEMI (Oficina Nacional de Emergencia del Ministerio del Interior) and a history of seismological studies in Chile by Armando Cisternas. Field trips at the end of the workshop focused on uplift areas and reconstruction in coastal areas south and north of Concepcion impacted by the earthquake.  Scientific and poster sessions at the Workshop presented the results of studies using the portable aftershock data and showed that a wide variety of investigations were being undertaken that extended well beyond initial event location. Hiroo Kanamori gave a keynote presentation that reviewed recent improvements in the understanding of the styles of rupture in large and great earthquakes. Topics covered in presentations and posters included:

•   Source process of the 2010 Maule earthquake and comparisons with other great subduction zone earthquakes using multiple data sets (seismic, OBS, GPS, InSAR, tsunami)

•   Co-seismic and post seismic deformation of the region

•   Aftershock and seismicity studies including triggered earthquakes

•   Historic earthquakes and paleoseismology studies

•   Structure of the seismogenic zone forearc

•   International coordination of seismic and GPS data collection response

•   Future directions for studying the South American subduction zone

Discussion sessions confirmed that the agreement to share and merge data from the aftershock deployment had indeed been a great success. Data from the US, British and French stations are available through the IRIS Data Management Center and the German data are available through GFZ Potsdam. The Potsdam, Liverpool and the USGS NEIC have created catalogs of more than 30,000 events. Much more extensive and comprehensive analyses had already been carried out than would have been possible from the individual data sets in isolation. The USGS has relocated 2500 events using a multiple event location approach and determined regional moment tensor solutions for 450 events larger than m4.5. Sharing and comparing catalogs provided an important foundation for more detailed studies of events and clusters within the aftershock zone. There is special interest in the larger aftershocks and those that occur outside the plate interface, especially normal faulting events (~M7) in the upper plate that are of special concern in Chile because they can have shallow hypocenters on-shore, in proximity to populated areas. 

Organizing Committee:

Sergio Barrientos -  University of Chile                                             
Klaus Bataille – University of Concepción
Susan Beck – University of Arizona
Anne Meltzer - Lehigh University
Onno Oncken – Helmholtz Centre Potsdam
Andreas Rietbrock – University of Liverpool
Ray Russo – University of Florida
Frederik Tilmann – Helmholtz Centre Potsdam
Christophe Vigny – Ecole Normale Superieure

 

 

Participants are responsible for making and payment of hotel and flight reservations.  Participants are responsible for meal costs with the exception of a hosted dinner on Wednesday and boxed lunches for the field trips.

Important Airport/Itinerary Information:

Participants have the option of booking roundtrip flights to Concepción or Santiago.  The airport in Concepción is Carriel Sur International Airport (CCP).   Participants attending the optional field trip on Friday, March 8 should either book a roundtrip flight to Santiago International Airport (SCL) or book the return trip out of Santiago.  Flight duration from Santiago to Concepción is 1 hour and 6 hours by bus.

Passport & Visa Requirements: 

U.S. citizens entering Chile must have a valid passport. U.S. citizens traveling to Chile for recreation, tourism, business, or academic conferences do not need to obtain a visa prior to their arrival in Chile however a visa is required upon entry.  US citizens will be issued a visa at the airport for $160.  Credit cards are accepted. The exchange rate for 1 U.S. Dollar = 480 Chilean Peso (CLP).

Suggested hotels & hostals: 

Hotel Araucano  http://www.hotelaraucano.cl

Hotel Ercilla  http://www.hotelalonsodeercilla.cl

Germania Hotel http://www.hotelgermania.cl

Hotel El Dorado  http://www.hoteleldorado.cl

Hotel Alborada  http://www.hotelalborada.cl

Diego de Almagro Hotel http://www.dahoteles.com/seleccion.php?ciudad=8

Club Presidente Hotel  http://www.hotelpresidente.com/details.php?hid=26

San Martin Hostal  http://www.hostalsanmartin.cl

Bianca Hostal http://www.hostalbianca.cl

Monday, March 4, 18:00 hrs. At: Pinacoteca, University of  Concepción

Opening Remarks and Reception

- Bernabé Rivas, Vicerrector de Investigación y Desarrollo, Universidad de Concepción.
- Ricardo Toro, Director Nacional, ONEMI.
- Armando Cisternas, Institut de Physique du Globe, Strasbourg, Francia. “An important period of seismology in Chile (1956-1973).”

Tuesday, March 5, At:   Auditorium EMPREUDEC  Vicerrectoría de Investigación

Keynote lecture and structural framework (Moderators: Frederik Tilmann, Andreas Rietbrock)

08:30 Hiroo Kanamori Keynote Lecture, Diversity of subduction-zone earthquakes and its implications for hazard mitigation

09:20 Gavin Hayes, Seismotectonic framework of the February 27, 2010 Mw8.8 Maule, Chile Earthquake sequence

09:40 Susan Beck, Imaging the Chile Forearc after the 2010 Maule earthquake

10:00 Coffee

10:20 Discussion

Observing the rupture (Moderators: Susan Beck, Anne Meltzer)

10:40 Mauro Palo, High-frequency seismic emission during Maule earthquake (Mw 8.8, 27/02/2010) inferred from high-resolution back-projection analysis of P waves

11:00 Viviana Dionisio, Broadband characterization of the 2010 Mw 8.8 Maule earthquake combining coherent  rupture imaging and kinematic modeling

Postseismic sequence (Moderators: Susan Beck, Anne Meltzer)

11:20 Frederik Tilmann, Aftershock seismicity in the Maule rupture area

11:40 Andreas Rietbrock, Repeating Earthquakes on the Chile subduction zone following the Maule 2010 Earthquake

12:00 Hans Agurto, Seismic-afterslip characterization of the 2010 Mw 8.8 Maule earthquake based on moment tensor inversion

12:20 Chao-Shing Lee, The Aftershock Analyses of 2010 Chile M=8.8 Mega Earthquake

12:40 Discussion

13:00 Lunch

Long term deformation (Moderators: Onno Oncken, Ray Russo)

14:20 Jonathan Bedford, A time variable afterslip model for the 2010 Maule Mw=8.8, Chile megathrust earthquake

14:40 AndrésTassara, Contrasting nature of the megathrust along the area ruptured by the Maule earthquake: aftershocks, afterslip and gravity-derived forearc structure

15:00 Megan Torpey, Seismic Attenuation in the Rupture Zone of the 2010 Maule, Chile, Earthquake:  Two Spectral Ratio  Methods

15:20 Julius Jara, Quaternary deformation along the Maule Earthquake rupture zone

15:40 Felipe Aron, Permanent Forearc Extension and Seismic Segmentation: Insights from the 2010 Maule Earthquake, Chile

16:00 Discussion

16:20 Posters + Coffee

17:20 Discussion: Relevant processes during Maule rupture, postseismic sequence and long term deformation

18:20 Conclusions

Wednesday, March 6, At: Auditorium EMPREUDEC Vicerrectoría de Investigación

Earthquake consequences (Moderators: Sergio Barrientos, Klaus Bataille)     

08:30 Robb Moss, Predicting co-seismic displacement for Engineering and Hazard Planning

08:50 Juan Carmona, Motion perception in the tall buildings of Buenos Aires City caused by the great 2010 Chilean Seismic event and its kinematic particularities

09:10 Discussion

Observatory concepts (Moderators: Sergio Barrientos, Klaus Bataille)    

09:20 Anne Socquet, Interseismic coupling in the North Chile seismic gap, from space geodesy.

09:40 Onno Onken, Subduction zone observatory and future aftershock deployment responses to major earthquake

10:00 Dante Figueroa, Detection of the Japan 2011 tsunami 40 km from the coast of Chile using a coastal HF radar

10:20 Mairi Best, Applications of cabled observatories to earthquake and tsunami research and early detection: examples from Canada and Europe

10:40 Víctor Ariel Gallardo, On the need and convenience of establishing an Oceanographic Observatory in Dichato, Chile

11:00 Chao-Shing Lee, New Frontier for the Marine Cable Observatory in Chile

11:20 Discussion

11:40 Coffee

12:00 Discussion Lessons Learned (Moderator: Susan Beck, Anne Meltzer)

13:00 Lunch

14:20 Plenary Session: Subduction zone earthquake science: Main questions. (Moderator: Frederik Tilmann, Andreas Rietbrock)

15:20 Conclusions / Recommendations

16:00 Coffee

16:30 Plenary Session: Observatories and aftershock deployments” (Moderator: Onno Oncken, Susan Beck)

17:30 Conclusions / Recommendations

19:30 Dinner

Thursday, March 7: Local Field Trip to Arauco Península (focusing on crustal uplift)

8:00 Bus departure - Lunch on bus

Friday, March 8: Coastal Field Trip (Optional) (focusing on effects of Tsunami)

8:00 Bus departure - Lunch on bus

 

Presentations

  • Seismotectonic Framework of the Feb 27, 2010 Mw 8.8 Maule, Chile Earthquake Sequence Gavin Hayes
  • Seismic-afterslip Characterisation of the 2010 Mw 8.8 Maule Earthquake based on moment tensors inversion Hans Detzel
  • Contrasting Nature of the Megathrust Ruptured by the Maule Earthquake  Andre Tassara
  • The Kinematic of the Motion Perceived in the Tall Buildings of Buenos Aires City Caused by the Great 2010 Chilean Seismic Event Juan Carmona
  • Subduction Zone Observatory and Future Aftershock Deployment Responses to Major Earthquake Onno Oncken
  • Applications of Cabled Observatories to Earthquakeand Tsunami Research and Early Detection: Examples from Canada and Europe Mairi Best

 

Posters

  • GRO-Chile: U. Chile and IRIS Collaboration on Development of a Ten Station Backbone Network of Global Reporting Geophysical Observatories iris news
  • Spatial and Temporal Distribution of Aftershock Seismicity using the Complete IMAD Dataset Josh Stachnik
  • Classifying Uncertainty in RMT Solutions for the 2010 Maule Earthquake Aftershock Sequence Kendra Johnson
  • Structure of the Maule Earthquake Rupture Zone: Insights from Seismic Velocity Tomography Stephen Hicks

Notice:
The registration period for this workshop closed at Wed, February 20, 2013 - 12:00:00 PM.

Notice:
The abstract submission period for this workshop closed at .

Notice:
The whitepaper submission period for this workshop closed at .

Notice:
The webinar registration period for this workshop closed at .

Last Name First Name Institution
Adolfo Romero Diego Universidad de Concepcion
Aguilar Andrea Universidad de Concepcion
Aguilar Andrea Universidad de Concepcion
Agurto Cristobal Universidad de Concepcion
Agurto Hans University of Sao Paulo
Agurto Hans University of Sao Paulo
Aron Felipe Cornell University
Arturo Basualto Alarcia Daniel Servicio Nacional De Geologica y Mineria
Baez Juan Carlos Universidad de Concepcion
Barrientos Jaqueline Universidad de Concepcion
Barrientos Sergio Universidad de Chile
Bataille Klaus Universidad de Concepcion
Beck Susan University of Arizona
Bedford Jonathan GFZ Potsdam
Belmonte Arturo Univesidad de Concepcion
Bernales Jorge Universidad de Concepcion
Best Mairi Consultant to EMSO
Calisto Ignacia Universidad de Concepcion
Cardona Carlos Eduardo Sernageomin
Carmona Juan National University of San Juan,Argentina
Carteau Carlos Universidad de Concepcion
Catalia Nicole Universidad de Concepcion
Condori Misael Universidad de Concepcion
Contreras Kohl Marcelo Universidad de Concepcion
Dionicio Viviana Institut de Physique du Globe de Paris - IPGP
Dotorale Ecole ISTerre
Figueroa Dante Universidad de Concepcion
Gallardo Victor Ariel Universidad de Concepcion
Gonzalez-Huizar Hector University of Texas at El Paso
Hayes Gavin USGS NEIC
Henriquez Carolina Universidad de Concepcion
Herrera Carlos Universidad de Concepcion
Hicks Stephen University of Liverpool
Jara Julius University Potsdam
Jaramillo Eduardo Universidad Austral de Chile
Johnson Kendra Colorado School of Mines
Kanamori Hiroo California Institute of Technology
Lazo Jonathan Observatorio Volcanologico de los Andes del Sur (OVDAS
Leiva P. Universidad Austral de Chile
Leyton Camila Universidad de Concepcion
Luis Franco Observatorio Volcanologico de los Andes del Sur (OVDAS
Mareno Marcos GFZ-Potsdam
Melnick Daniel University of Potsdam
Meltzer Anne Leigh University
Miller Matt University of Concepcion
Montalva Gonzalo University of Concepcion
Moss Robb California Polytechnic Institute,San Luis Obispo
Oncken Onno GFZ-Potsdam
P. Jesus TUE
Palo Mauro GFZ - Potsdam
Parra Hecto Instituto Geografico Militar de Chile
Pulgar Vergara Daniela Universidad de Concepcion
Quijada Jonathan Sernageomin
Ramos Catalina Universidad de Concepcion
Richter Tom GFZ - Potsdam
Rietbrock Andrea University of Liverpool
Rivas Lautaro Instituto Geografico Militar de Chile
Rodriguez Paulo Universidad de Concepcion
Roecker Steven Rensselaer Polytechnic Institute
Russo Ray University of Florida
Salazar Paola Universidad de Concepcion
Sanhueza Alejandro Universidad de Concepcion
Simpson David IRIS Consortium
Socquet Anne ISTerre
Soto Hugo Universidad de Concepcion
Stachnik Josh Lehigh University
Tassara Andres Universiad de Concepcion
Tilmann Frederik GFZ - Potsdam
Torpey Megan University of Florida
Trehu Anne Oregon State University
Vera Maria Universidad de Concepcion
Wesson Rob Unaffiliated

Notice:
The scholarship application period for this workshop closed at .

Important Dates

  • Registration open:
    Sun, February 10, 2013
  • Registration deadline:
    Wed, February 20, 2013

Workshop Location
University of Concepcion