Understanding complex faults: Rupture propagation during the 2010 El Mayor-Cucapah earthquake

Journal Reference: Shinji Yamashita, Yuji Yagi, Ryo Okuwaki. Irregular rupture propagation and geometric fault complexities during the 2010 Mw 7.2 El Mayor-Cucapah earthquake. Scientific Reports, 2022; 12 (1) DOI: 10.1038/s41598-022-08671-6 In nature, it is rare for the faults that cause earthquakes to be completely planar, and they are typically subject to some complexities. These complexities, … Read more

Earthquake fracture energy relates to how a quake stops

Journal Reference: Chun-Yu Ke, Gregory C. McLaskey, David S. Kammer. Earthquake breakdown energy scaling despite constant fracture energy. Nature Communications, 2022; 13 (1) DOI: 10.1038/s41467-022-28647-4 This modeling revelation could help science inch closer to making accurate earthquake forecasts. “We realized that observations we thought were related to how faults weaken are actually data related to … Read more

Hidden magnitude-8.2 earthquake source of mysterious 2021 global tsunami

Journal Reference: Zhe Jia, Zhongwen Zhan, Hiroo Kanamori. The 2021 South Sandwich Island M w 8.2 Earthquake: A Slow Event Sandwiched Between Regular Ruptures. Geophysical Research Letters, 2022; 49 (3) DOI: 10.1029/2021GL097104 In August 2021, a magnitude 7.5 earthquake hit near the South Sandwich Islands, creating a tsunami that rippled around the globe. The epicenter … Read more

January 2020 Puerto Rico earthquake provides valuable data for ground failure models

Journal Reference: Kate E. Allstadt, Eric M. Thompson, Desireé Bayouth García, Edwin Irizarry Brugman, K. Stephen Hughes, Robert G. Schmitt. Ground Failure Triggered by the 7 January 2020 M 6.4 Puerto Rico Earthquake. Seismological Research Letters, 2022; DOI: 10.1785/0220210235 The ground failure that resulted from the magnitude 6.4 earthquake wasn’t exceptional, especially compared to the catastrophic … Read more

3D fault information improves alert accuracy for earthquake early warning

Journal Reference: Jessica R. Murray, Eric M. Thompson, Annemarie S. Baltay, Sarah E. Minson. The Impact of 3D Finite-Fault Information on Ground-Motion Forecasting for Earthquake Early Warning. Bulletin of the Seismological Society of America, 2021; DOI: 10.1785/0120210162 The benefits of 3D fault models vary depending on the fault style (a strike slip versus a reverse … Read more

Earthquake depth impacts potential tsunami threat

Journal Reference: Kwok Fai Cheung, Thorne Lay, Lin Sun, Yoshiki Yamazaki. Tsunami size variability with rupture depth. Nature Geoscience, 2021; DOI: 10.1038/s41561-021-00869-z Research led by University of Hawai’i (UH) at Manoa scientists provides new insight that connects the characteristics of earthquakes — magnitude, depth where two tectonic plates slip past each other and the rigidity … Read more

New type of earthquake discovered

Journal Reference: Hongyu Yu, Rebecca M. Harrington, Honn Kao, Yajing Liu, Bei Wang. Fluid-injection-induced earthquakes characterized by hybrid-frequency waveforms manifest the transition from aseismic to seismic slip. Nature Communications, 2021; 12 (1) DOI: 10.1038/s41467-021-26961-x The group headed by Hongyu Yu – first at RUB, later at the Canadian Geological Survey of Canada – and RUB … Read more

Earthquake creates ecological opportunity

Journal Reference: Felix Vaux, Dave Craw, Ceridwen I. Fraser, Jonathan M. Waters. Northward range extension for Durvillaea poha bull kelp: Response to tectonic disturbance? Journal of Phycology, 2021; DOI: 10.1111/jpy.13179 Lead author Dr Felix Vaux, of the Department of Zoology, says earthquakes are typically considered devastating events for people and the environment, but the positive … Read more

Machine learning refines earthquake detection capabilities

Journal Reference: Bertrand Rouet-Leduc, Romain Jolivet, Manon Dalaison, Paul A. Johnson, Claudia Hulbert. Autonomous extraction of millimeter-scale deformation in InSAR time series using deep learning. Nature Communications, 2021; 12 (1) DOI: 10.1038/s41467-021-26254-3 “Applying machine learning to InSAR data gives us a new way to understand the physics behind tectonic faults and earthquakes,” said Bertrand Rouet-Leduc, … Read more

Seismic shockwave pattern may be redirecting earthquake damage

Journal Reference: Daniel T. Trugman, Shanna X. Chu, Victor C. Tsai. Earthquake Source Complexity Controls the Frequency Dependence of Near‐Source Radiation Patterns. Geophysical Research Letters, 2021; 48 (17) DOI: 10.1029/2021GL095022 The study examined data from one of the densest seismic arrays ever deployed and found that earthquakes emit their strongest seismic shockwaves in four opposing … Read more