Earthquakes

Wednesday, September 18, 2019 Honolulu, HI University of Hawaii at Manoa

The 2018 Update of the U.S. National Seismic Hazard Model defines the potential for earthquake ground shaking for various probability levels across the conterminous United States and is applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. The updated model represents an assessment of the best available science in earthquake hazards...

Probabilistic seismic hazard maps have been prepared for Alaska portraying ground motion values (peak ground acceleration and spectral amplitude at periods of 0.2, 0.3 and 1.0 seconds) at probabilities of exceedance of 2% and 10% in 50 years. Preparation of these maps followed the same general strategy as that followed for the U.S.G.S. seismic hazard maps of the contiguous United States, combining...

Seismic hazard maps for Puerto Rico and the U.S. Virgin Islands, Samoa and the Pacific Islands, and Guam.

The following resources are available for Vs30 (the time-averaged shear-wave velocity to 30 m depth) models and data.

Hazard model studies for selected outside-the-U.S. locations.

Memphis has a dense urban population near faults capable of producing major earthquakes.

Compared to what we know about earthquake hazards in California, less is known in the Central US.

Overview Liquefaction is a phenomenon that is caused by earthquake shaking. Wet sand can become liquid-like when strongly shaken. The liquefied sand may flow and the ground may move and crack, causing damage to surface structures and underground utilities.

March 7-8, 2018 Newark, CA Risk Management Solutions Headquarters The following links are to PDF versions of the workshop presentations. All workshop participants have granted permission to post their presentations. If you prefer, you can download all of the presentations in one Zip file (48.3 MB).