Message from the President

David A Friedman-PulseWelcome to The Pulse of Earthquake Engineering, the bi-weekly email newsletter of the Earthquake Engineering Research Institute.
— David A. Friedman, EERI President

 

Search The Pulse

News of the Institute

EERI Leadership Communique More >

Now Available: John F. Meehan, EERI Oral History Series Vol. 25 More >

The Friedman Family Visiting Professionals Program 2017-2018 More >

EERI Board Elections Close November 1, 2017 More >

Learning from Earthquakes: Preliminary Reports (3) from Mexico Earthquakes

1. Preliminary Statistics of Collapsed Buildings in Mexico City in the September 19, 2017 Puebla-Morelos Earthquake More >

2. Preliminary Reconnaissance Report on September 19 M7.1 Earthquake More >

3. Tsunami Generated by Mw8.1 Chiapas, Mexico Earthquake on September 7, 2017 More >

EERI Opportunities

EERI Post-Graduate Internship Program Spring 2018: Application Deadline November 1, 2017 More >

Student News

EERI Student Member Renewal Reminder! More >

Join The EERI Student Leadership Council (SLC) More >

NYNE Regional Chapter Visits NYC Local University to Promote EERI More >

Announcements

NHERI-SimCenter Upcoming Webinars More >

PEER, SEAOC & SEAW Seminars: TBI Guidelines for Performance-Based Seismic Design of Tall Buildings Version 2.02 More >

2018 Working Group on Nevada Seismic Hazards: Proposals due November 1 More >

Resources from the Vault

The Mw 6.9 Loma Prieta, California on October 17, 1989 More >

Welcome New EERI Subscribing Members!

Partner Engineering and Science, Inc. More >

Simpson Strong-Tie More >

Welcome New Members

Welcome New Members More >

Publications

Earthquake Spectra: Preprint Manuscripts More >

News of the Profession

Links to Recent News and Views More >

Calendar

6th Structural Engineers World Congress (SEWC 2017)

November 14-17, 2017
Cancun, M
exico
www.sewc2017.org

2017 American Geophysical Union (AGU) Fall Meeting
December 11-15, 2017
New Orleans, Louisiana
fallmeeting.agu.org

1st International Conference on Infrastructure Resilience
February 14-16, 2018

resilienceconference.ethz.ch

10th Gulf Seismic Forum for Seismology and Earthquake
Engineering Studies in the Arabian Plate Region
March 19-22, 2018
Muscat, Oman
conferences.squ.edu.om

Geotechnical Earthquake Engineering and Soil Dynamics Conference V
June 10–13, 2018
Austin, TX
www.geesd2018.org

16th European Conference on Earthquake Engineering
June 18–21, 2018
Thessaloniki, Greece

www.16ecee.org

11th U.S. National Conference on Earthquake Engineering
June 25–29, 2018
Los Angeles, CA
www.11ncee.org

Sixth International Symposium on Life-Cycle Civil Engineering (IALCCE2018)
October 28–31, 2018
Ghent, Belgium
www.sarcos.eng.cam.ac.uk

GeoMEast 2018 International
November 24–28, 2018
Cairo, Egypt
www.GeoMEast2018.org

EERI 71st Annual Meeting
March 5–8, 2019
Vancouver, B.C., Canada
2019am.eeri-events.org

Social Links

EERI's Facebook profile  EERI's LinkedIn group  EERI's YouTube channel  twitter  vimeo  rss

Tell Us Your Thoughts

Submit your questions regarding The Pulse of Earthquake Engineering at pulse@eeri.org. You may also submit your content for consideration at pulse@eeri.org.

The Pulse is sent on the first and fifteenth day of each month (or the first business day after). Please contact us if you don't receive these issues.

 

 

News of the Institute

EERI Leadership Communique

David A. FriedmanA Message from the President
By David A. Friedman (M. EERI, 1988)

Since becoming President of the Board of EERI in March of this year, I cringe a little when opening the latest edition of the Pulse, simply because I see my photo staring back at me. And even more embarrassing, accompanying my photo is a message-less “Message from the President.”

So, in the future, look to this space quarterly for a little more content, sometimes from me, sometimes from our Executive Director, or perhaps even getting to know a member of the Board of Directors or staff.

Briefly, I would like to provide an update, and my perspective, on the last 12-months of exciting transition at EERI. 

As I commenced my role as President-elect, I found a very active Board of Directors, under the superb leadership of President Mary Comerio (M. EERI, 1988), along with the staff, engaged in almost a year long process of Strategic Alignment. This process successfully focused EERI’s strategic plan into laser-focused initiatives and priorities, with clear metrics for implementation and evaluation. It was painstaking and challenging work, but the priority setting, and alignment between staff and board, provided for a very clear “North Star” for our collective vision and mission. We will be communicating more to you on the Strategic Initiatives in the very near future.

Last summer, I heard the news that no incoming board chair loves to hear: Jay Berger (M. EERI, 2005) announced that he was stepping down as Executive Director and retiring to Colorado. Oy. But with change comes opportunity, and the Board began a diligent process of finding and on-boarding a new Executive Director. The search process lasted five months, with many capable and skilled professionals interested in assuming the leadership position at EERI. After thorough vetting, we selected the best candidate, that also happened to be the internal candidate, Heidi Tremayne (M. EERI, 2004), to be the next Executive Director of EERI!

Heidi officially assume the Executive Director role in April, 2017 and with the committed assistance of Jay, the transition went seamlessly. Heidi and her team, a combination of seasoned EERI staff and with some new faces with superb talents, are on a steady trajectory forward. Though admittedly biased, the Board is entirely delighted with Heidi, her team and the speedy progress of the transition.

We had been a little lucky that there had not been a major earthquake to contend with during this transitional period. Well, that lucky streak broke with the advent of the two Mexico-centered earthquakes. Nonetheless, the response of the LFE team, including new Program Manager’s Maggie Ortiz-Millan (M. EERI, 2012), has been extremely timely, organized and effective.

Bottom line, on behalf of all the Board of Directors, we are very pleased to report that EERI is hearty and healthy, and though there are challenges ahead, the future looks mightily bright for the Institute.

David A Friedman

 

 

Now Available: John F. Meehan, EERI Oral History Series Vol. 25

Meehan Front CoverThis month, EERI members (Regular, Young Professional, Retired, Honorary, Subscribing Member Representative, and Affiliate) are receiving in the mail the latest issue of Connections: The EERI Oral History Series, with John F. (Jack) Meehan (M. EERI 1966) as the subject.

Today there are many individuals who are engaged full-time in earthquake engineering research to improve seismic design practices and codes. In the 1950s, when John (Jack) Meehan (1920-2011) began his long tenure with the California agency overseeing Field Act (public school) construction, he was almost alone in that effort. This EERI oral history documents his early years in various engineering jobs, including working for John Blume, and his later career identifying and managing needed research on nonstructural components, reinforced masonry, damping values, quality control in wood construction, and forced vibration and shake table equipment development, as well as field studies of twenty earthquakes and their effects on buildings. 

The John F. Meehan Oral History is also available online as a free PDF download, and may be purchased from the EERI Knowledge Center. This volume of The EERI Oral History Series was produced with financial support from the Federal Emergency Management Agency.

EERI gratefully acknowledges the work of the Oral History Committee in producing this volume, especially Robert Reitherman (M. EERI, 1979) for his leadership, and Thalia Anagnos (M. EERI, 1982) for her hard work organizing and editing the unfinished manuscript that Stanley Scott (M. EERI, 1973) had developed before he passed away in 2002.

Initiated by Stanley Scott, Connections: The EERI Oral History Series, serves to preserve the recollections of those who have had pioneering careers in the field of earthquake engineering. To see the full list of volumes and a compiled index of volumes 1-24 in The EERI Oral History Series, click here.

The Friedman Family Visiting Professionals Program 2017-2018

Applications are now being accepted for the Friedman Family Visiting Professionals Program for the 2017-2018 academic year. With the generous support of an endowment from the Friedman Family, the program provides travel funding for expert professionals to visit your university and deliver a lecture that showcases their experiences in a professional career associated with earthquake engineering and earthquake risk reduction.

EERI Student Chapters can choose from a list of 19 expert EERI professionals that span disciplines including seismology, geotechnical engineering, structural engineering, insurance, emergency management, and public policy. Click here to view the list of professionals participating in 2017-2018. 

EERI Student Chapters are encouraged to complete an application form to request a visit from a Friedman Family Visiting Professional. All applications must be completed and submitted online.

Please note that the form requires you to rank your top three professionals and briefly describe the reason for your choices (300 words or less) Review of Student Chapter requests will begin on October 31, 2017, and continue on a rolling basis until all travel funds are awarded. All chapters are encouraged to apply before this date for the best chance of selection. Depending on funding availability, approximately six to ten trips will be funded for visits from January through May 2018.

For more information about the Friedman Family Visiting Professionals program, please click here.

EERI Board Elections Close November 1, 2017

Meet the Candidates Panel.webPolls are closing soon for the 2018 EERI Board of Directors election! You only have until Wednesday, November 1, 2017, to submit your vote. EERI Regular Members, Young Professionals, Retired, Honorary Members, and Subscribing Member Representatives should have received an email notice with a secure link to your ballot. If you have not received an email ballot and are eligible to vote, please email eeri@eeri.org

Voting is an opportunity to help shape the future of EERI. Thank you in advance for participating in this election.

Learn more about the candidates.

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Learning from Earthquakes: Preliminary Reports (3) from Mexico Earthquakes

1. Preliminary Statistics of Collapsed Buildings in Mexico City in the September 19, 2017 Puebla-Morelos Earthquake

Mexico Ground Motion Records. CIRESFrancisco Galvis, Eduardo Miranda (M. EERI 1987), Pablo Heresi, Héctor Dávalos and José Ramón Silos
John A. Blume Earthquake Engineering Center, Stanford University

Read the full report

On September 19th, 2017 an Mw7.1 intermediate-depth normal-fault earthquake occurred approximately 120 km away from Mexico City. The earthquake produced the collapse of 46 structures in Mexico City which resulted in 219 deaths. This was the most intense earthquake to hit Mexico City since the Ms8.1 September 19th, 1985 earthquake. A preliminary study of the characteristics of collapsed buildings is presented. It is shown that most collapsed buildings had less than 10 stories and were primarily located in zones IIIa and IIIb of the microzonation of the 1987 Mexico City building code which are characterized by having total thickness of soft clay deposits between 25 and 40m and by predominant periods of vibration between 1s and 2s. It is shown that, although regions and building heights that were hit hardest were somewhat different than in 1985, there are many similarities in the characteristics of buildings that collapsed. Similarly to the 1985 earthquake, most of the collapse buildings consisted of reinforced concrete buildings whose lateral resisting system consisted of flat slabs supported by reinforced concrete columns. Collapses occurred primarily in buildings constructed prior to 1985, Furthermore, 57% of the collapsed buildings had a soft story. Both the flat slab and column lateral resisting system and soft stories have long been identified as building vulnerabilities. This highlights the need to possibly issue a mandate to evaluate and possibly seismically upgrade existing buildings located in the former lakebed of Mexico City that have these characteristics as they may be in danger of collapse in future earthquakes.

Image: Ground motion records from stations near Mexico City. Source: CIRES

2. Preliminary Reconnaissance Report on September 19 M7.1 Earthquake

Abel Diaz (M. EERI, 2011), Patrick Murren and Samantha Walker
Skidmore, Owings & Merrill LLP (SOM)

Read the full report

SOM documentation tool

In the wake of the devastating Central Mexico earthquake on Tuesday, September 19th, a team of SOM engineers traveled to Mexico City to contribute to post-disaster recovery efforts. Shortly after the 7.1 magnitude earthquake struck, three structural engineers based in SOM San Francisco and Los Angeles offices —Abel Diaz (M. EERI, 2011 ), Patrick Murren, and Samantha Walker —set out to document building damage and provide technical support to local structural reconnaissance efforts. Edward Guerra, Associate Director at SOM, and architect Adrián Gracia, Design Director at Cuatro44, joined the team. Both Guerra and Gracia reside in Mexico. 

One of the first international teams of engineers on the ground in Mexico, the group documented building damage patterns before the crucial work of clean-up and rebuilding began. The team also assisted local officials in assessing critical and significantly damaged structures. The information they gathered is being shared with the Earthquake Engineering Research Institute (EERI) in support of its mission to mitigate earthquake risk around the world. The team is also documenting its findings to be presented to educators, students, architects, and structural engineers, both in the United States and in Mexico. In addition, a damage identification tool that utilizes photo recognition technology through machine learning algorithms is being developed, with the intent to systematize and expedite the assessment of damage for large inventories of affected buildings in future earthquakes.

Photo: SOM is collaborating with university researchers to develop a machine learning tool to document and assess building damage from photographs.

3. Tsunami Generated by Mw8.1 Chiapas, Mexico Earthquake on September 7, 2017

Chiapas Dock DamageRick Wilson (M. EERI, 2010), Maria-Teresa Ramirez-Herrera, Lori Dengler (M. EERI, 1998), Kevin Miller, and Yvette LaDuke

Read the full report

The Chiapas earthquake on September 7, 2017 was one of the largest down-slab normal faulting events ever recorded. This situation complicated the tsunami forecast since forecast methods and pre-event modeling are primarily associated with subduction zone earthquakes where the most significant tsunamis are generated. Adding non-subduction zone source modeling to the tsunami forecast databases should be considered and added to conventional warning systems like those run by the U.S. Offshore seismic and tsunami hazard analyses using historical and pre-historical events should incorporate the potential for large earthquakes occurring along sources other than the megathrust boundary. 

From an engineering perspective, initial reports indicate there was only minor damage along the Mexico coast. There was damage to Marina Chiapas harbor where floating docks overtopped their piles. Increasing pile heights could reduce the potential for damage to floating docks.

Tsunami warning notifications did not get to the public in time to assist with evacuation. Streamlining the messaging in Mexico from the warning system to the public should be considered. And, for local events, preparedness efforts need to place emphasis on responding to feeling the earthquake and not waiting to be notified or observe additional effects such as waiting for the water to drawdown.

Although the U.S. tsunami warning centers were timely with their international and domestic messaging, there were issues with how those messages were presented and interpreted. The use of a new "Tsunami Threat" banner on the main website created confusion with emergency managers where no tsunami threat was expected to exist. Also, Pacific U.S. states and territories were listed in both domestic and international messages, which caused confusion for American Samoa where these messages contained inconsistent information. We understand these issues are being addressed by the warning centers, and there will be follow up with the warning centers during future meetings of the U.S. National Tsunami Hazard Mitigation Program.

Photo: Dock damage in Marina Chiapas the day after the September 7, 2017, earthquake. Source

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EERI Opportunities

EERI Post-Graduate Internship Program Spring 2018: Application Deadline November 1, 2017

EERI logoEERI will be accepting applications for Spring 2018 Post-Graduate Internship positions through November 1, 2017.

EERI’s internships are approximately six-months long, and offer engagement with a number of interesting EERI projects and Institute activities, including Learning from Earthquakes, the School Earthquake Safety Initiative, the 11th National Conference on Earthquake Engineering, and technical seminars and webinars.

Tasks are varied, although day-to-day work focuses on supporting EERI projects and staff through research, project and event coordination, and website development and maintenance. Learn more about EERI Post-Graduate internships

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Student News

EERI Student Member Renewal Reminder!

Have you renewed your EERI membership for the 2017/2018 academic year yet?

Click here to renewLogin hint: your username is your email address, and your password is your EERI ID number.

As an EERI Student Member, for only $25 per year, you will continue to receive The Pulse e-newsletter and online access to Earthquake Spectra, reduced registration fees for seminars and meetings, including the 11th US National Conference on Earthquake Engineering to be held June 25-29, 2018, the opportunity to participate in technical committees, projects, and the Undergraduate Seismic Design Competition at 11NCEE, and access to a network of nearly 3,000 earthquake professionals in a variety of disciplines. Don't miss out - renew today!

RECENT GRADS: If you have recently graduated, you are eligible to receive your first year of membership as an EERI Young Professional absolutely free! If you wish to upgrade from Student to a Young Professional membership, please email eeri@eeri.org, please include your graduation date and EERI member ID number.

Join The EERI Student Leadership Council (SLC)

SLC 2017 group with EERI staffThe EERI Student Leadership Council (SLC) is recruiting new graduate student members! The SLC serves as an active earthquake engineering student community, and a representative of EERI student chapters. The council mission is to help students develop leadership skills and gain experience within earthquake engineering fields. The SLC activities include organizing and hosting the undergraduate Seismic Design Competition, the Post-Earthquake Reconnaissance Workshop, and education outreach programs. To learn more about SLC activities, visit the SLC website and Facebook page. If you are a graduate student and you are interested in joining the SLC, please fill out an interest form.

NYNE Regional Chapter Visits NYC Local University to Promote EERI

NYNE Manahattan CollegeOn September 20, 2017, representatives from the NYNE Chapter visited Manhattan College in Riverdale, NY to promote EERI and inform undergraduates and graduate students about the opportunities available to them now and later as Young Professionals. About 46 students attended with four faculty members.

Guillermo Diaz-Fanas (M. EERI 2015, EERI-NYNE Board of Directors) continued the conversation and encouraged the attendees to establish an EERI student chapter in Manhattan College student, emphasizing on the importance of advocating for earthquake risk reduction and connecting it to current events in Mexico City. Dr. Ezra Jampole (M. EERI 2012, Academic Liaison of EERI-NYNE) introduced the Seismic Design Competition and Student Leadership Council to the students and highlighted benefits from having a student chapter. 

The visit closed positively, setting goals towards establishing the Student Chapter early in 2018 and potentially applying to compete in the SDC of the 11NCEE!

If you are interested in establishing an EERI Student Chapter at your school, please see How to Start an EERI Student Chapter. Applications must be submitted by December 1, 2017 for your team to be considered for the 2018 Seismic Design Competition.

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Announcements

NHERI-SimCenter Upcoming Webinars

NHERI Design SafeNHERI-SimCenter Series: Natural Hazards Engineering 101
October 25, 2017, Noon - 1PM (PDT)
"Experimental and Field-Based Research Activities to Advance Tsunami Engineering"

Register for this webinar

Early Career Researcher Forum
Wednesday, November 1, 2017, 1 - 2pm (PDT)
"Multi-scale Modeling of a 500-year Cascadia Subduction Zone Tsunami Inundation including the Constructed Environment"

Register for this webinar

PEER, SEAOC & SEAW Seminars: TBI Guidelines for Performance-Based Seismic Design of Tall Buildings Version 2.02

TBI coverThe Pacific Earthquake Engineering Research Center (PEER), the Structural Engineers Association of California (SEAOC) Foundation, and the Structural Engineers Association of Washington (SEAW) will be co-hosting a series of seminars in October and November 2017, live and via webcast, that will highlight revisions incorporated into the just published Pacific Earthquake Engineering Research (PEER) Report No. 2017/06: “Guidelines for Performance-Based Seismic Design of Tall Buildings, Version 2.02,” prepared by a TBI Working Group led by co-chairs Ron Hamburger (M. EERI, 1998) and Jack Moehle (M. EERI, 1981), with contributions from Jack Baker (M. EERI, 2004), JonathanBray (M. EERI, 1990), C.B. Crouse (M. EERI, 1976), Greg Deierlein (M. EERI, 1989), John Hooper (M. EERI, 1987), Marshall Lew (M. EERI, 1978), Joe Maffei (M. EERI, 1989), Stephen Mahin (M. EERI, 1975), James Malley (M. EERI, 1990), FarzadNaeim (M. EERI, 1983), Jonathan Stewart (M. EERI, 1994), and John Wallace (M. EERI, 1988).

Click here for program and registration information.

2018 Working Group on Nevada Seismic Hazards: Proposals due November 1

UNR LOGOThe 2018 Working Group on Nevada Seismic Hazards will be held February 5-7, 2018, in Reno, Nevada.

The 2018 Working Group on Nevada Seismic Hazards meeting is being organized by the Nevada Bureau of Mines and Geology (NBMG) and the Nevada Seismological Laboratory (NSL). Partial funding for the workshop has been provided by the U.S. Geological Survey. 

All persons with relevant expertise are invited to attend. Attendees are encouraged to present their recent relevant research, with the goal of improving the US Geological Survey hazard model as it affects hazard estimates in Nevada. Please direct all questions and send title and abstract proposals by November 1, 2017 to both John Anderson (M. EERI, 1980) (jga@unr.edu) and Rich Koehler (rkoehler@unr.edu).

For program information, please visit the website.

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Resources from the Vault

The Mw 6.9 Loma Prieta, California on October 17, 1989

Loma PrietaThe Mw 6.9 Loma Prieta Earthquake occurred 28 years ago on October 17, 1989, at 5:04:15 pm PDT approximately 18 km beneath the Earth’s surface in the Santa Cruz Mountains of California. The epicenter was about 16 km northeast of Santa Cruz and 30 km south of San Jose. The earthquake ruptures a 40 km segment of the San Andreas Fault and was felt from Los Angeles in the south, to the Oregon border in the north, and Nevada in the east. Damaged occurred throughout an 8,000 square km area. The strong shaking lasted less than 15 seconds, but caused more than $7 billion in damage. 

Photo: Loma Prieta, California, October 17, 1989, Marina District, San Francisco
Photo Credit: Edgar V. Leyendecker, USGS

Member Resources: To view more photos, please login to Member Resources and click "EQ Photo Galleries" (on the red navigation bar, top/left), where you'll find galleries for more than 30 earthquakes with 30 to 300 photos each, including a gallery of 87 photos with captions from Loma Prieta. Find more resources located at our LFE Reconnaissance Archive where you can read Earthquake Spectra articles, EERI reports, and peruse other findings. If you are not an EERI member, and would like to preview our photo galleries, please click here.

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Welcome New EERI Subscribing Members!

Partner Engineering and Science, Inc.

Partner-LogoPartner Engineering and Science, Inc. is a national firm offering full-service engineering, environmental, seismic / structural engineering, energy consulting and design services. Drawing on 90 years of experience, our multi-disciplinary approach allows us to serve clients at all stages from initial due diligence and design to development and construction, as well as throughout the ongoing maintenance and optimization of the asset. For more information, please visit partneresi.com.

Simpson Strong-Tie

SimpsonStrongTie LogoFor over 60 years, Simpson Strong-Tie has focused on creating structural products that help people build safer and stronger homes and buildings. The company has led the industry in structural systems research, testing and innovation, and works closely with industry professionals to provide code-listed, field-tested products and value-engineered solutions. Simpson Strong-Tie opened a research laboratory in 2003 to better understand the effects of earthquakes, high winds, and other natural disasters on a building’s performance. The lab’s state-of-the art testing equipment can simulate the magnitude of seismic events like the 1989 Loma Prieta quake in California, which measured 6.9 on the Richter scale, This ongoing testing and research is being conducted with the sole purpose of improving building design and safety through enhanced product development. For more information, please visit strongtie.com.

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Welcome New Members

Welcome New Members

EERI welcomes members who have recently joined the Institute!

Regular

Mark Havekost, McMillen Jacobs Associates, Civil
Kami Mohamamdi, California Institute of Technology, Civil
Juan-Carlos Carvajal, Geotechnical
Kenneth Cox, RB&G Engineering, Geotechnical
Mike Dadik, Carollo Engineers, Inc.
Alistair Lizaranzu, North Bay Seismic Design
Brian Knight, WRK Engineers

Young Professional

Chandrakanth Bolisetti, Idaho National Laboratory, Civil
Maria Giovanna Durante, UCLA, Geotechnical
Venetia Despotaki, GEM Foundation, Risk Analysis
Karl Eid
Alvaro Rubio, Geotechnical
Marissa Shea

E-Affiliate

Yasemin Manav, Geotechnical
Elif Ağcakoca, Sakarya University
Chinmayi H.K.
Uma SK, University Visveswaraya College of Engineering

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Publications

Earthquake Spectra: Preprint Manuscripts

spectra 150Fourteen (14) preprint manuscripts have been posted to the Earthquake Spectra website prior to formal publication. The papers to be published are:   

  • Rapid Post-Earthquake Microtremor Measurements for Site Amplification and Shear-wave Velocity Profiling in Kathmandu, Nepal by Sheri Molnar (M. EERI, 2011), John Onwuemeka, and Sujan Adhikari
  • Damage Assessment and Modeling of the Five-Tiered Pagoda-Style Nyatapola Temple by Richard L. Wood (M. EERI, 2011), Mohammad Ebrahim Mohammadi (M. EERI, 2017), Andre R. Barbosa (M. EERI, 1997), Linh Abdulrahman, Rajendra Soti (M. EERI, 2017), Chandra Kiran Kawan, Manjip Shakya, and Michael J. Olsen (M. EERI, 2004)
  • Evaluation of One-Dimensional Multi-Directional Site Response Analyses Using Geotechnical Downhole Array Data in California and Japan by Gangjin Li (M. EERI, 2017), Ramin Motamed (M. EERI, 2010) and Stephen Dickenson (M. EERI, 1990)
  • Seismic performance evaluation of steel ordinary moment frames by Sang Whan Han (M. EERI, 1994), Tae O Kim and Seong Jin Baek
  • Using Resilience Indicators in the Prediction of Earthquake Recovery by Venetia Despotaki (M. EERI, 2017), Luis Sousa and Christopher G. Burton  
  • Optimal Wavelet Parameters for System Identification of Civil Engineering Structures by Carlos A. Gaviria and Luis A. Montejo (M. EERI, 2003)
  • An organizational capability framework for earthquake recovery by Yan Chang-Richards (M. EERI, 2014), Suzanne Wilkinson, Erica Seville and David Brunsdon (M. EERI, 1997)
  • Joint maximum likelihood estimators for Gutenberg-Richter parameters λ0 and β using sub-catalogs by Mario Ordaz and Sebastián Giraldo
  • Fully-Floating Suspended Ceiling System: Experimental Evaluation of Structural Feasibility and Challenges by A. Pourali (M. EERI, 2016), R. P. Dhakal, G. A. MacRae (M. EERI, 1995) and A. S. Tasligedik (M. EERI, 2015)
  • Repair costs of existing RC buildings damaged by the L'Aquila earthquake and comparison with FEMA P-58 predictions by Ciro Del Vecchio (M. EERI, 2017), Marco Di Ludovico, Stefano Pampanin and Andrea Prota
  • A qualitative case study of water, sanitation, and hygiene resources after Gorkha earthquake in Nepal by Sital Uprety (M. EERI, 2011), Juliet Iwelunmor, Nora Sadik, Bipin Dangol and Thanh H. Nguyen (M. EERI, 2013)
  • Post-disaster damage assessments as catalysts for recovery: A look at assessments conducted in the wake of the 2015 earthquake in Nepal by David Lallemant, Robert Soden, Steven Rubinyi, Sabine Loos (M. EERI, 2016), Karen Barns and Gitanjali Bhattacharjee (M. EERI, 2017)  
  • Site characteristics of Kathmandu valley from array microtremor observations by Nakhorn Poovarodom (M. EERI, 2016), Deepak Chamlagain, Amorntep Jirasakjamroonsri and Pennung Warnitchai
  • Implementing Nepal's National Building Code—A Case Study in Patience and Persistence by Lucy Arendt (M. EERI, 2008), Ayse Hortacsu (M. EERI, 2000), Kishor Jaiswal (M. EERI, 2007), John Bevington, Surya Shrestha (M. EERI, 2014), Forrest Lanning (M. EERI, 2009), Garmalia Mentor-William, Ghazala Naeem and Kate Thibert (M. EERI, 2005)

To read all current preprint manuscripts posted, visit Earthquake Spectra preprints.

If you have questions about Spectra, contact Managing Editor Liz Stalnaker at liz@eeri.org

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News of the Profession

Links to Recent News and Views

Seven recent articles, stories, opinions, or reports from around the web

1onePrevalent, Discredited Building Technique Raised Mexico’s Quake Deaths: Engineers (Insurance Journal) Eduardo Miranda (M. EERI, 1987) and his team compiled the data on the 44 building collapses in Mexico City through in-person visits and detailed structural analysis. Read more

2twoEarthquakes are Inevitable but Catastrophe is Not (Seattle Times) Opinion piece by Marc Eberhard (M. EERI, 1990), Jeffrey Berman (M. EERI, 2000), and Scott Miles (M. EERI, 2009). "The situation in Washington state is not identical to that in Mexico, but the parallels are too glaring to ignore..." Read more

3threeHow Engineering Earthquake-Proof Buildings Could Save Lives (Futurism) Over the past century, engineers and architects have learned a lot about how to make structures more impervious to earthquakes. Thomas Heaton (M. EERI, 1995), Jason McCormick (M. EERI, 2001), and Andrew S. Whittaker provide expert commentary. Read more

4fourEngineering Group (EERI) Gathers Data Post-Earthquake to Reduce Future Risk (Associations Now) Following the devastating Central Mexico earthquake, the Earthquake Engineering Research Institute is on the ground gathering information, which it hopes will be used to reduce risk. Past-President Mary Comerio (M. EERI, 1988) discusses EERI's Learning from Earthquakes program. Read more

5fiveRisk of Human-Triggered Earthquakes Laid out in Biggest-Ever Database (Nature) Geologists track hundreds of quakes caused by people and the projects that set them off. Read more

6sixSan Francisco is Overdue for a Big Earthquake — Here are the Most Vulnerable Parts of the City (Business Insider) EERI Past-President, Mary Comerio (M. EERI, 1988) comments in this article that maps the neighborhoods most at-risk in an earthquake. Read more

7sevenAssessing Regional Earthquake Risk and Hazards in the Age of Exascale (Science Newsline) An interdisciplinary team of researchers led by David McCallen (M. EERI, 1990), are building the first-ever end-to-end simulation code to precisely capture the geology and physics of regional earthquakes, and how the shaking impacts buildings. Read more

 

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