Why do seismologists need to deploy more seismographs?
Records of earthquake ground motion close to large earthquakes are used by the engineers to develop methods to construct buildings that do not collapse during earthquakes. These recordings can also be used to understand why engineered structures (buildings, bridges, overpasses, pipelines) fail during earthquakes if the instrument is located close to the structure. These recordings are quite rare, particularly in dense urban areas. Unfortunately, the San Francisco Bay area is home to several large faults, but this situation is ideal for recording strong shaking near engineered structures.
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