This site provides access to Community Internet Intensity Maps (CIIM), made from citizen reports of ground shaking following significant earthquakes. CIIMs are available for the 50 United States and territories, as well as for some significant events outside the U.S. Intensity maps are also available for some historic earthquakes. There is also information on fast moment tensor solutions, PAGER (Prompt ... Full description.

This USGS portal offers information about the origin, frequency, and distribution of natural geologic hazards and catastrophic events, and the resulting impacts on people, property, and the environment. Featured sites provide user-friendly information and graphics about earthquakes, tsunamis, landslides, El Nino, hurricanes, and erosion studies. Information is available about both general topics and ... Full description.

This resource displays a list of the most recent large earthquakes with links to detailed information about them. In addition it offers links to video replays of recent special events. Personnel at IGPP (the Institute of Geophysics and Planetary Physics) are responsible for the collection and distribution of seismic data from several regional networks, small aperture arrays, and portable instrument ... Full description.

The Northern California Earthquake Data Center (NCEDC) offers various types of earthquake-related data. Most of the datasets are available on the WWW. A few require the establishment of a research account. Available information includes: earthquake catalogs and lists; seismic waveform data from the Berkeley Digital Seismic Network, the Northern California Seismic Network, the Parkfield High-Resolution ... Full description.

These two programs are available for free download from this website. Also included is the technical information users might need to have the program running in the classroom, including how to update the database of earthquakes. Seismic/eruption is a program that plots the epicenter of all earthquakes within a time period, geographic region, and magnitude chosen by the user. This program also does ... Full description.

This is an outline of an earthquakes unit using Seismic/Eruption (called SeisVolE on this webpage). Parts of the unit involve graphing using Excel, and all lessons use the Siesmic/Eruption program (which is available for free download). These lessons cover: making a map using Seismic/Eruption, adding relief to the map, taking a cross-section of the map, importing earthquake data from the USGS PDE ... Full description.

This is the homepage of the Broadband Seismic Data Collection Center (BSDCC). It features seismic data from several regional seismic networks, small aperture arrays and portable instrumental deployments. The webpage contains detailed information and research results for all the networks the Broadband Seismic Data Collection Center operates. Users can follow numerous seismic information links including ... Full description.

This web site provides an interactive map of global seismic activity that is updated every 30 minutes. The site uses data from the National Earthquake Information Center to produce a world map with clickable areas of seismic activity. Users can click on geographical areas of the map, and will be taken to a table which describes the time, location, magnitude and comments about particular seismic events. ... Full description.

This site presents educational modules for teaching about earthquakes, volcano eruptions and related plate tectonic concepts using an interactive computer program for mapping called Seismic/Eruption (also called SeisVolE). The program includes up-to-date earthquake and volcanic eruption catalogs and allows the user to display earthquake and volcanic eruption activity in "speeded up real time" on global, ... Full description.

This database summarizes geologic, geomorphic, and geographic information for about 2,000 Quaternary faults and folds in the United States. These structures are believed to be sources of magnitude 6 or greater earthquakes during the Quaternary Period (the past 1,600,000 years). Maps of these geologic structures are linked to detailed descriptions, including geologic setting, fault orientation, fault ... Full description.