Geologic Hazards Science Center

Publications

Filter Total Items: 2,058
Publication Thumbnail
Year Published: 2020

Now trending … Earthquake information

The U.S. Geological Survey Earthquake Hazards Program has overall successfully fulfilled its mission of providing timely earthquake information via web applications and other methods. Imagine a single month of earthquake data delivery, serving 3.6 billion total data requests, including 29 million pageviews by 7.1 million users, 606 million...

Leith, William S.; Fee, Jeremy; Martinez, Eric M.; Lastowka, Lynda A.

Publication Thumbnail
Year Published: 2020

Financial risk innovation: Development of earthquake parametric triggers for contingent credit instruments

The Inter-American Development Bank (IDB) has developed financial risk management strategies for natural disasters focusing primarily on the emergency phase of the catastrophes where financial support is more cost-efficient and certainly most needed. The main IDB financial instrument to provide liquidity in the aftermath of catastrophic events is...

Collich, Guillermo; Rosillo, Rafael; Martinez, Juan; Wald, David J.; Durante, Juan José

Publication Thumbnail
Year Published: 2020

Landslides after wildfire: Initiation, magnitude, and mobility

In the semiarid Southwestern USA, wildfires are commonly followed by runoff-generated debris flows because wildfires remove vegetation and ground cover, which reduces soil infiltration capacity and increases soil erodibility. At a study site in Southern California, we initially observed runoff-generated debris flows in the first year following...

Rengers, Francis K.; McGuire, Luke; Oakley, Nina S.; Kean, Jason W.; Staley, Dennis M.; Tang, Hui

Publication Thumbnail
Year Published: 2020

Adjusted geomagnetic data—Theoretical basis and validation

Adjusted geomagnetic data are magnetometer measurements with provisional correction factors applied such that vector quantities are oriented in a local Cartesian frame in which the X axis points north, the Y axis points east, and the Z axis points down. These correction factors are determined from so-called absolute measurements, which are “ground...

Rigler, E. Joshua; Claycomb, Abram E.
Rigler, E.J., and Claycomb, A.E., 2020, Adjusted geomagnetic data—Theoretical basis and validation: U.S. Geological Survey Open-File Report 2020–1053, 19 p., https://doi.org/10.3133/ofr20201053.

Publication Thumbnail
Year Published: 2020

Procedures for developing multi-period response spectra at non-conterminous United States sites

This study complements proposals to the Provisions Update Committee of the Building Seismic Safety Council that would incorporate multi-period response spectra (MPRS) in the 2020 edition of the NEHRP Recommended Seismic Provisions for New Buildings and Other Structures (2020 NEHRP Provisions) and related proposals to the ASCE 7-22 Seismic...

Tong, Mai; Hanson, Robert D.; Kircher, Charles A; Rezaeian, Sanaz; Luco, Nicolas

Publication Thumbnail
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.

Publication Thumbnail
Year Published: 2020

Recording the aurora borealis (northern lights) at seismometers across Alaska

We examine three continuously recording data sets related to the aurora: all‐sky camera images, three‐component magnetometer data, and vertical‐component, broadband seismic data as part of the EarthScope project (2014 to present). Across Alaska there are six all‐sky cameras, 13 magnetometers, and >200">>200>200 ...

Tape, C.; Ringler, Adam T.; Hampton, D.L.

Publication Thumbnail
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

Publication Thumbnail
Year Published: 2020

Reconstructing the velocity and deformation of a rapid landslide using multiview video

Noncontact measurements of spatially varied ground surface deformation during landslide motion can provide important constraints on landslide mechanics. Here, we present and test a new method for extracting measurements of rapid landslide surface displacement and velocity (accelerations of approximately 1 m/s2) using sequences of stereo...

Rapstine, Thomas D; Rengers, Francis K.; Allstadt, Kate; Iverson, Richard M.; Smith, Joel B.; Obryk, Maciej; Logan, M.; Olsen, M. J.

Publication Thumbnail
Year Published: 2020

Bellwether sites for evaluating changes in landslide frequency and magnitude in cryospheric mountainous terrain: A call for systematic, long-term observations to decipher the impact of climate change

Permafrost and glaciers are being degraded by the warming effects of climate change. The impact that this degradation has on slope stability in mountainous terrain is the subject of ongoing research efforts. The relatively new availability of high-resolution (≤ 10 m) imagery with worldwide coverage and short (≤ 30 days) repeat...

Coe, Jeffrey A.

Publication Thumbnail
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.

Publication Thumbnail
Year Published: 2020

A 36-year record of rock avalanches in the Saint Elias Mountains of Alaska, with implications for future hazards

Glacial retreat and mountain-permafrost degradation resulting from rising global temperatures have the potential to impact the frequency and magnitude of landslides in glaciated environments. Several recent events, including the 2015 Taan Fiord rock avalanche, which triggered a tsunami with one of the highest wave runups ever recorded, have called...

Bessette-Kirton, Erin K.; Coe, Jeffrey A.