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
Posters
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
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Notice:
The whitepaper submission period for this workshop closed at
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Notice:
The webinar registration period for this workshop closed at
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| 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
.
