The tectonic plates are in continuous movement on the Earth's asthenosphere, which causes their external zones to limit each other in convergence, divergence or friction, releasing energy and producing earth tremors, which we call earthquakes. The geological results on the Earth's crust of these forces are, among others: rifts, oceanic trenches, island arcs, mountain ranges, geological faults or volcanoes.
Seismology is the science in charge of collecting earthquakes in the world and studying their data. It is especially important when it comes to preventing the natural risks that earthquakes can cause, in order to protect the human populations settled in the territory. For this reason, calculations are made to quantify the possible danger, exposure, vulnerability and risk of these natural phenomena occurring.
The interactive viewer shows different thematic maps related to earthquakes on a global scale, helping us to understand and evaluate their effects. Among the layers that we can select with their corresponding legends (Lꜛ) are the following:
- Earthquakes occurred in the last 30 days with a magnitude greater than 2.5. It also highlights the most important earthquakes.
- Significant ground movements (shakemap) in the last 30 days.
Seismicity data:
- Largest historical earthquakes since 1900
- Seismic hazard map that indicates the probability of an earthquake occurring in a specific location.
- Seismic risk map that measures the probability of an earthquake occurring and its negative consequences depending on the exposure and vulnerability of the populations.
- Seismic exposure map that quantifies human size, goods and services, infrastructure and the economic impact of the possible disaster.
- World geological maps to know the lithological units and geological faults of the regions.
Data is provided by:
- United States Geological Survey (USGS) https://earthquake.usgs.gov
- Global Earthquake Model (GEM) Foundation https://www.globalquakemodel.org
- OneGeology British Geological Survey https://onegeology.org
