Venezuela earthquakes struck the northern region of the country on June 24, 2026, with a magnitude 7.2 earthquake followed by a magnitude 7.5 mainshock. The quakes left immense damage and loss of life across the region, particularly in Caracas and La Guaira. The ground displacement was especially intense near these cities, with satellite-based maps revealing how the land surface moved.
The maps were derived from NISAR (NASA-ISRO Synthetic Aperture Radar) data acquired on June 25 and June 30, after the earthquakes, and June 13 and June 18, before the earthquakes. The data was processed by the NISAR science team at NASA’s Jet Propulsion Laboratory (JPL) using a technique called InSAR, which compares data from repeat passes to detect subtle changes in the distance between the satellite and the ground.
Venezuela Earthquakes and Ground Displacement
The InSAR technique allowed scientists to capture a mix of horizontal and vertical displacement. The resulting map shows red areas where the ground moved east and up, and blue areas where it moved west and down. The fault rupture propagated offshore, toward the east, and then back onshore near the international airport north of Caracas. The narrow white band visible between westward and eastward displacement marks roughly where the fault ruptured at depth.
The fault is part of a network of fractures that lies along the boundary between the Caribbean plate to the north and the South American plate to the south. Scientists say faults along this plate boundary, including the San Sebastián fault system where these quakes likely occurred, have long been accumulating strain. The deep blue color in the map indicates that the westward surface displacement along this part of the fault was far greater than elsewhere, reaching as much as 60 centimeters (24 inches).
Causes and Effects of the Earthquakes
The earthquakes were caused by the movement of the Caribbean and South American plates. The San Sebastián fault system is a strike-slip fault, where the plates are moving horizontally past each other. The fault rupture was complex, with multiple segments of the fault breaking at different times. The resulting ground displacement was intense, with some areas experiencing up to 60 centimeters of displacement.
- The earthquakes caused widespread damage to buildings and infrastructure.
- The ground displacement was especially intense near Caracas and La Guaira.
- The fault rupture propagated offshore, toward the east, and then back onshore near the international airport north of Caracas.
Response and Relief Efforts
The response to the earthquakes was swift, with emergency services and aid organizations quickly responding to the disaster. The U.S. Geological Survey refined its fault-slip model, or “finite fault model,” to better constrain how the fault slipped at depth, including along the rupture’s eastern section. The displacement maps for this event were provided through NISAR’s Urgent Response (UR) system, a fast-track process that can deliver data within 12 to 24 hours to support disaster response.
Conclusion and Future Implications
The Venezuela earthquakes were a devastating reminder of the power of natural disasters. The ground displacement and fault rupture that occurred during the earthquakes were complex and intense, causing widespread damage and loss of life. The response to the disaster was swift, with emergency services and aid organizations quickly responding to the needs of those affected. As the region begins to rebuild, it is essential to consider the long-term implications of the earthquakes and the potential for future disasters.
Source: science.nasa.gov.
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