For very large screens check out the Earthquake Channel Display. Click to enlarge. Volcano-tectonic (VT) earthquakes have high rates of shaking, while long-period (LP) and very-long period (VLP) earthquakes have lower rates of shaking.
This index also provides links to Seismic Hazard Zone Reports (SHZR) and Alquist-Priolo Fault Evaluation Reports … Africa. … United States National Seismic Hazard Maps The U.S. Geological Survey’s maps of earthquake shaking hazards provide information essential to creating and updat-ing the seismic design provisions of building codes and insurance rates used in the United States. EZRIM are maps that show Alquist-Priolo Earthquake Fault Zones or Seismic Hazard Zones, or both. Peak Horizontal Acceleration (7% in 75-Year) 0.2s (7% in 75-Year) Ground Motions; 1.0s (7% in 75-Year) Ground Motions; Alaska .
2015 seismic hazard maps of Canada show the level of seismic hazard and an indication of the direction and steepness of the hazard gradient across the country.
U.S. Geological Survey, 2015, National Water Information System data available on the World Wide Web (USGS Water Data for the Nation), ... not directly in the maps.
Hazards are measured as the likelihood of experiencing earthquake shaking of various intensities.How to read the mapsThe colors in the maps denote “seismic design categories” (SDCs), which reflect the likelihood of experiencing earthquake shaking of various intensities. Search results are limited to 20,000 events. Mapa de últimos terremotos incluso boletines, noticias y enlaces. Note that the colour scale is adjusted from map to map in order to show national variations in a sensible way. Periodic revisions of these maps incorporate the results of new research. ANSS Comprehensive Earthquake Catalog (ComCat) Documentation. Background.
The largest damaging earthquake (magnitude 5.9 with a Modified Mercalli Intensity of VII) occurred on August 23, 2011. This database has been approved for release by the U.S. Geological Survey (USGS).
USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards. Since at least 1774, people in central Virginia have felt small earthquakes and suffered damage from infrequent larger ones. Zoom Maps. Map by USGS. As early as the 1920s, scientists noted that earthquakes are concentrated in very specific narrow zones (see text). Jump to Navigation Seismic Design Maps. USGS Earthquake Hazards Program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards Jump to Navigation Please do not use this tool to obtain ground motion parameter values for the design code reference documents covered by the U.S. Seismic Design Maps web tools (e.g., the International Building Code and the ASCE 7 or 41 Standard). In 1954, French seismologist J.P. Rothé published this map showing the concentration of earthquakes along the zones indicated by dots and cross-hatched areas. Although this database has been subjected to rigorous review and is substantially complete, the USGS reserves the right to revise the data pursuant to further analysis and review. Building code maps typically display earthquake zones or accelerations in bedrock for a single return period, often 475 or 2475 years. The map is a simplification of the National Building Code of Canada seismic hazard map for spectral acceleration at a 0.2 second period (5 cycles per second), and shows the ground motions that might damage one- to two-storey buildings. Significant Earthquakes Archive. The second largest damaging earthquake (magnitude 4.8) in the seismic zone occurred in 1875. Earthquakes Canada - Canada Recent News M=3.9 - 22 May 2020, 11:59 pm PDT - 148 km SSW of Fort McPherson, NT Details Here M=4.9 - 22 May 2020, 7:14 pm - 129 km W of Port Alice, BC Details Here And also try our new IRIS Station Monitor page. Information Warehouse: Regulatory Maps and Reports (web application) - Find and download Earthquake Zones of Required Investigation Maps (EZRIM) in PDF and GIS format. 2015 National Building Code of Canada seismic hazard maps. Help Earthquake Headlines Last 30 Days Earthquakes Special Quakes Plate Tectonics Education Links.