The Next-Generation Liquefaction Database Project: Current Status and Future Goals
Date: 4/24/2019
Time: 06:00 PM
Room: Grand Ballroom
A community database of liquefaction case histories was developed as part of the Next-Generation Liquefaction (NGL) project. A case history must contain the following three objects: (1) a "site" consisting of characterization of soil conditions by means of field and laboratory tests, (2) an "event" consisting of earthquake source and ground motion characterizations, and (3) an "observation" of liquefaction effects, or lack thereof, induced at a site by a specific event. The NGL relational database was developed using the My Structured Query Language (MySQL) relational database management system. The NGL database schema (i.e. its organizational structure) and a meta-dictionary that contains information about each database entry are available along with the current incarnation of the database at http://www.nextgenerationliquefaction.org/. The NGL database is mirrored on a secure server hosted at the DesignSafe-CI cyber-infrastructure at the University of Texas at Austin, Texas Advanced Computing Center. Such mirroring also allows users to interact with the database in the cloud using Python scripts in Jupyter notebooks.
The NGL user interface includes visualization tools to analyze spatial distribution of ground motions, site investigations, and observations. It also provides plotting tools to visualize in-situ investigations, laboratory tests, and post-earthquake observations. Each case history in the database must be reviewed by at least two reviewers before becoming an NGL case history. Such quality-control process is overseen by the NGL database working group. Currently, the NGL database includes both legacy case histories (i.e., used in existing liquefaction models) and new case histories generated by recent earthquakes. New data include case histories generated by the M9.1 Tohoku-Oki, 2011 earthquake in Japan, and the 2010-2011, Canterbury earthquake sequence in New Zealand. We anticipate that the NGL database will provide the natural hazard community with a robust basis for development of liquefaction susceptibility, triggering, and consequences models.
Presenting Author: Paolo Zimmaro
Authors
Paolo Zimmaro pzimmaro@ucla.edu University of California, Los Angeles, Los Angeles, California, United States Presenting Author
Corresponding Author
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Scott J Brandenberg sjbrandenberg@ucla.edu University of California, Los Angeles, Los Angeles, California, United States |
Yousef Bozorgnia yousef.bozorgnia@ucla.edu University of California, Los Angeles, Los Angeles, California, United States |
Jonathan P Stewart jstewart@seas.ucla.edu University of California, Los Angeles, Los Angeles, California, United States |
Dong Youp Kwak dkwak@hanyang.ac.kr Hanyang University, Ansan, Gyeonggi-do, , Korea, Republic of |
K. Onder Cetin ocetin@metu.edu.tr Middle East Technical University, Ankara, , Türkiye |
Kevin W Franke kevin_franke@byu.edu Brigham Young University, Provo, Utah, United States |
Robb E S Moss rmoss@calpoly.edu California Polytechnic State University, San Luis Obispo, California, United States |
Steven L Kramer kramer@uw.edu University of Washington, Seattle, Washington, United States |
John Stamatakos jstamatakos@swri.org Southwest Research Institute, San Antonio, Texas, United States |
Miriam Juckett mjuckett@swri.org Southwest Research Institute, San Antonio, Texas, United States |
The Next-Generation Liquefaction Database Project: Current Status and Future Goals
Category
Coseismic Ground Failure and Impacts on the Built and Natural Environment