Map Symbols and Abbreviations - USGS Earthquake Hazards …
Map Symbols and Abbreviations. Three types of observations are used to determine the location of the fault and indicate recency of movement. Each of these is labeled on the map in a different color. Complete map abbreviations. G - Geomorphic evidence. See more
The Earth's surface is transformed by movement along active faults, producing features that help us determine the location of the fault … See more
Creep is steady fault movement, varying from continuous to episodic with creep events lasting minutes to days. Generally creep occurs without … See more
Locations of trenches are shown on the maps as thin blue lines and each is labeled using codes (T) and abbreviated descriptions of the evidence found in the trench. Most trenches across the Hayward fault were excavated to meet the requirements of the … See more
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Interactive U.S. Fault Map | U.S. Geological Survey
WEBSep 27, 2022 · The various colors and line types indicate different ages of the most recent earthquakes on the fault and how well the location of the fault is constrained. For more details, see Quaternary Faults . Explore …
Faults | U.S. Geological Survey - USGS.gov
WEBThis database contains information on faults and associated folds in the United States that demonstrate geological evidence of coseismic surface deformation in large …
Focal Mechanisms... or "Beachballs" | U.S. Geological Survey
WEBA focal mechanism, or "beachball", is a graphic symbol that indicates the type of slip that occurs during an earthquake: strike-slip, normal, thrust (reverse), or some combination. …
OpenQuake Map Viewer - Global Seismic Hazard Map - GEM …
WEBThe Global Earthquake Model (GEM) Global Seismic Hazard Map (version 2018.1) depicts the geographic distribution of the Peak Ground Acceleration (PGA) with a 10% …
Interactive map of earthquakes around the world
WEBInteractive map of earthquakes around the world. The U.S. Geological Survey's Latest Earthquakes viewer shows the locations and magnitudes of recent earthquakes around the world. Users can also search the …
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USGS Interactive Fault Maps
WEBUSGS Interactive Fault Maps. Powered by Leaflet — Maps provided by MapQuest, OpenStreetMap and contributors., USGS, USGS, Peter Bird.
Map of earthquake probabilities across the United States
WEBThese maps are used in determining building seismic codes, insurance rates, and other public decisions. The amount of shaking an earthquake produces at a particular place depends not only on the earthquake's …
Earthquake Visualization - Princeton University
WEBDarker blue indicates deeper ocean floor. We see some earthquake concentrations along deep ocean trenches while other fault lines are in shallow areas and along coast lines. …
Earthquake | Definition, Causes, Effects, & Facts
WEB4 days ago · Earthquakes can occur anywhere, but they occur mainly along fault lines (planar or curved fractures in the rocks of Earth’s crust), where compressional or tensional forces move rocks on opposite sides …
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