Geologic Hazards Science Center

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The Geologic Hazards Science Center (GHSC), on the Colorado School of Mines campus, is home to the National Earthquake Information Center (NEIC), many scientists in the Earthquake Hazards Program and Landslide Hazards Program, as well as the Geomagnetism Program staff.

Earthquake Hazards Program

Earthquake Hazards Program

The Earthquake Hazards Program provides research and information products for earthquake loss reduction, including hazard and risk assessments, comprehensive real-time earthquake monitoring, and public outreach.

Earthquake Hazards

Landslide Hazards Program

Landslide Hazards Program

The National Landslide Hazards Program strives to reduce long-term losses from landslide hazards by improving our understanding of the causes of ground failure and suggesting mitigation strategies.

Landslide Hazards

Geomagnetism Program

Geomagnetism Program

The Geomagnetism Program provides continuous records of magnetic field variations; disseminates magnetic data; and conducts research into the nature of geomagnetic variations for purposes of scientific understanding and hazard mitigation.

Geomagnetism

News

Date published: June 23, 2020

June 23, 2020 Oaxaca, Mexico Earthquake

A magnitude 7.4 earthquake struck offshore Oaxaca, Mexico, on June 23, 2020, at 11:30 a.m. ET. Seismic instruments indicate the earthquake originated at a depth of 16 miles (26 km).  

Date published: June 1, 2020

The Blind Zone of Earthquake Early Warning

One USGS scientist has sorted through the challenges, the claims, and the data to determine what the possibilities and limitations really are for EEW, and the results may surprise you.

Read the new Science for Everyone article: The Blind Zone of Earthquake Early Warning

Date published: May 12, 2020

Announcing Gavin Hayes as USGS Senior Science Advisor for Earthquake & Geologic Hazards

On May 10, Gavin Hayes takes on the role of Senior Science Advisor for Earthquake and Geologic Hazards within the USGS Natural Hazards Mission Area.  The Senior Science Advisor serves as the coordinator for the Earthquake Hazards, Global Seismographic Network, and Geomagnetism Programs and provides oversight and guidance across the full breadth of USGS geohazard-related activities.

Publications

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Year Published: 2020

Calibration of the U.S. Geological Survey National Crustal Model

The U.S. Geological Survey National Crustal Model (NCM) is being developed to include spatially varying estimates of site response in seismic hazard assessments. Primary outputs of the NCM are continuous velocity and density profiles from the Earth’s surface to the mantle transition zone at 410-kilometer (km) depth for each location on a 1-km grid...

Boyd, Oliver S.
Boyd, O.S., 2020, Calibration of the U.S. Geological Survey National Crustal Model: U.S. Geological Survey Open-File Report 2020–1052, 23 p., https://doi.org/ 10.3133/ ofr20201052.

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Year Published: 2020

Global quieting of high-frequency seismic noise due to COVID-19 pandemic lockdown measures

Human activity causes vibrations that propagate into the ground as high-frequency seismic waves. Measures to mitigate the COVID-19 pandemic caused widespread changes in human activity, leading to a months-long reduction in seismic noise of up to 50%. The 2020 seismic noise quiet period is the longest and most prominent global anthropogenic seismic...

Lecocq, Thomas; Hicks, Stephen; Van Noten, Koen; van Wijk, Kasper; Koelemeijer, Paula; De Plaen, Raphael S.M.; Massin, Frederick; Hillers, Gregor; Anthony, Robert E.; Apoloner, Maria-Theresia; Arroyo-Solorzano, Mario; Assink, Jelle D.; Buyukakpinar, Pinar; Cannata, Andrea; Cannavo, Flavio; Carrasco, Sebastian; Caudron, Corentin; Chaves, Esteban J.; Cornwell, David G.; Craig, David; den Ouden, Oliver F.C.; Diaz, Jordi; Donner, Stefanie; Evangelidis, Christos P.; Evers, Laslo; Fauville, Benoit; Fernandez, Gonzalo A.; Giannopoulos, Dimitrios; Gibbons, Steven J.; Girona, Tarsilo; Grecu, Bogdan; Grunberg, Marc; Hetenyi, Gyorgy; Horleston, Anna; Inza, Adolfo; Irving, Jessica C.E.; Jamalreyhani, Mohammadreza; Kafka, Alan; Koymans, Mathijs R.; Labedz, Celeste; Larose, Eric; Lindsey, Nathaniel J.; McKinnon, Mika; Megies, Tobias; Miller, Meghan S.; Minarik, William G.; Moresi, Louis; Marquez-Ramirez, Victor H.; Mollhoff, Martin; Nesbitt, Ian; Niyogi, Shankho; Ojeda, Javier; Oth, Adrien; Proud, Simon; Pulli, Jay; Retailleau, Lise; Rintamaki, Annukka E.; Satriano, Claudio; Savage, Martha K.; Shani-Kamiel, Shanhar; Sleeman, Reinoud; Sokos, Efthimios; Stammler, Klaus; Stott, Alexander E.; Subedi, Shiba; Sorensen, Mathilde B.; Taira, Taka'aki; Tapia, Mar; Turhan, Faith; van der Pluijm, Ben; Vanstone, Mark; Vernge, Jerome; Vuorinen, Tommi A.T.; Warren, Tristram; Wassermann, Joachim; Xiao, Han

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Year Published: 2020

Evidence of previous faulting along the 2019 Ridgecrest, California earthquake ruptures

The July 2019 Ridgecrest earthquake sequence in southeastern California was characterized as surprising because only ~35% of the rupture occurred on previously mapped faults. Employing more detailed inspection of pre-event high-resolution topography and imagery in combination with field observations, we document evidence of active faulting in the...

Thompson Jobe, Jessica; Philibosian, Belle; Chupik, Colin; Dawson, Timothy E.; Bennett, Scott E. K.; Gold, Ryan D.; Duross, Christopher; Ladinsky, Tyler C.; Kendrick, Katherine; Haddon, Elizabeth; Pierce, Ian; Swanson, Brian J.; Seitz, Gordon G.