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Previously unrecognized tsunami hazard for cities like San Francisco


Previously unrecognized tsunami hazard for cities like San Francisco
A new study found overlooked tsunami hazards related to undersea, near-shore strike-slip faults, especially for coastal cities adjacent to faults that traverse inland bays. Several areas around the world may fall into this category, including the San Francisco Bay area, Izmit Bay in Turkey and the Gulf of Al-Aqaba in Egypt.
The study led by University of Illinois Urbana-Champaign civil and environmental engineering professor Ahmed Elbanna and professor Ares Rosakis of the California Institute of Technology used the Blue Waters supercomputer at the National Center for Supercomputing Applications to model tsunami hazards related to strike-slip faults around the globe. The results are published in the Proceedings of the National Academy of Sciences. ....

Beckman Institute , United States , University Of Southern California , San Francisco Bay , California Institute Of Technology , San Andreas Fault , Palu Bay , Sulawesi Tengah , University Of Illinois , Costas Synolakis , Faisal Amlani , Ahmed Elbanna , Mohamed Abdelmeguid , Ecole Normale Superieure , National Center , Beckman Institute For Advanced Science , National Science Foundation , Proceedings Of The National Academy Sciences , Athens College , Civil Engineering Caltech Big Ideas Fund , University Of Illinois Urbana Champaign , Izmit Bay , Illinois Urbana Champaign , Ares Rosakis , California Institute , Blue Waters ,

Contrary to Previous Belief, Strike-Slip Faults Can Generate Large Tsunamis


Credit: Image courtesy of Costas Synolakis
On September 28, 2018, an inexplicably large tsunami devastated the Indonesian coastal city of Palu and several others nearby. Between the tsunami and the magnitude 7.5 earthquake that caused it, some 4,340 people were killed, making it the deadliest earthquake that year.
The tsunami’s waves reached around six meters high, which was a shock to geophysicists who had believed that earthquakes along a strike-slip fault could only trigger far smaller tsunamis for that particular region. Now, new research describes a mechanism for these large tsunamis to form, and suggests that other coastal cities that were thought to be safe from massive tsunamis may need to reevaluate their level of risk. ....

Gulf Of Aqaba , Egypt General , Saudi Arabia , Palu Bay , Sulawesi Tengah , Lawrencea Hanson Jr , Donald Biggar Willett , Hazels Smits , Hiroo Kanamori , Costas Synolakis , Ahmed Elbanna , Nadia Lapusta , National Center , Viterbi School Of Engineering , Big Ideas Fund , National Science Foundation , Tsunami Research , National Geospatial , Intelligence Agency , Proceedings Of The National Academy Sciences , Athens College , University Of Illinois Urbana Champaign , Ares Rosakis , Mechanical Engineering , National Academy , Engineering Seismology ,

Previously unrecognized tsunami hazard identified in coastal cities


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IMAGE: Illinois researchers Mohamed Abdelmeguid, left, and professor Ahmed Elbanna collaborated with colleagues to model and simulate previously unrecognized tsunami risks worldwide.
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Credit: Photo by L. Brian Stauffer
CHAMPAIGN, Ill. A new study found overlooked tsunami hazards related to undersea, near-shore strike-slip faults, especially for coastal cities adjacent to faults that traverse inland bays. Several areas around the world may fall into this category, including the San Francisco Bay area, Izmit Bay in Turkey and the Gulf of Al-Aqaba in Egypt.
The study led by University of Illinois Urbana-Champaign civil and environmental engineering professor Ahmed Elbanna and professor Ares Rosakis of the California Institute of Technology used the Blue Waters supercomputer at the National Center for Supercomputing Applications to model tsunami hazards related to strike-slip faults around the globe. The results are published in the ....

United States , Beckman Institute , University Of Southern California , San Francisco Bay , California Institute Of Technology , San Andreas Fault , Palu Bay , Sulawesi Tengah , University Of Illinois , Costas Synolakis , Faisal Amlani , Ahmed Elbanna , Mohamed Abdelmeguid , Ecole Normale Superieure , National Center , Beckman Institute For Advanced Science , National Science Foundation , Proceedings Of The National Academy Sciences , Athens College , Civil Engineering Caltech Big Ideas Fund , University Of Illinois Urbana Champaign , Izmit Bay , Illinois Urbana Champaign , Ares Rosakis , California Institute , Blue Waters ,