A magnitude 5.1 earthquake struck in the San Francisco Bay Area on Tuesday morning, according to the USGS.SAN JOSE, Calif. -- A 3.6 magnitude aftershock struck near the same area where a magnitude 5.1 earthquake was felt across the San Francisco Bay Area on Tuesday morning. This latest ...
US-China relations were improving as well. In 1980, the State Seismological Bureau (SSB) of the People's Republic of China, the U.S. Geological Survey (USGS), and the U.S. National Science Foundation (NSF) signed the Earthquake Studies Protocol to initiate research programs for the benefit...