An examination of Earth tremors in Nigeria shows activity mostly along northwest-southeast lines. This is contrary to earlier theories that the tremors occurred in the inland extension of the northeast-southwest oceanic faults.
The Azores archipelago (Portugal) is subject to several geological hazards, including earthquakes and volcanic activity. In response, the Centre for Volcanology and Geological Risks Assessment (CVARG), developed a monitoring network which uses geophysical, geodetic, geochemical and meteorological techniques to provide continuous monitoring and early warning.
International Earth observation agencies are cooperating in the creation of online resources to aid rescue efforts and advance scientific understanding in the wake of the Japanese earthquake and tsunami. Available visualization products relate to a range of issues, including historic and present seismic activity, landslides, deformation areas, floating objects and more.