New Interactive Geonarrative Explains the 2023 Turkey, Earthquake Sequence
This tectonic map of the Turkey region shows the tectonic plates in the area and their direction of motion (arrows). The red lines indicate the plate boundaries and the small black arrows next to the red lines show the relative motion across the plate boundaries. The gold star shows the location of the M7.8 mainshock on February 6, 2023, and the blue star shows the location of the M7.5 aftershock later on February 6, 2023. A new geonarrative explains the tectonic setting of Turkey, historical seismicity of Turkey from 1900, details on both the M 7.8 and M 7.5 earthquake sequences
M7.8 and M7.5 Kahramanmaraş Earthquake Sequence near Nurdağı, Turkey (Türkiye)
A story map is now available that summarizes the tectonic setting and earthquake history in Turkey/Syria. We also have a Frequently Asked Questions page available to address the most common questions people have about the earthquake series. [Update: February 17, 2023] Read detailed aftershock statement: M 7.8 - 27 km E of Nurdağı, Turkey (Türkiye) The recent earthquakes in Turkey (Türkiye) have led to an unbearable loss of life and injuries across the Kahramanmaraş region. During the response and recovery efforts, USGS has continued to provide scientific support to help people in the region make the best decisions for themselves
Five Years After the Ridgecrest Earthquake Sequence
Rich Data Set Scientists continue to analyze the rich data set to address key questions in earthquake science, including what factors control the timing and location of aftershocks, and how the ground shakes close to large earthquakes. Investigations of the Ridgecrest Sequence have exploited data from seismic networks, geodetic networks, satellites and more. Complementing conventional seismic networks that have grown in sophistication, the scientific community also embraces additional technologies that allow earthquake shaking to be recorded in far greater detail than previously possible. One such technology was borrowed from the oil patch: simple nodal seismometers that have been used for many years to acquire seismic data for industry, primarily oil and gas exploration. These simple instruments