Publications
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The 2023 US 50-State National Seismic Hazard Model: Overview and implications The 2023 US 50-State National Seismic Hazard Model: Overview and implications
The US National Seismic Hazard Model (NSHM) was updated in 2023 for all 50 states using new science on seismicity, fault ruptures, ground motions, and probabilistic techniques to produce a standard of practice for public policy and other engineering applications (defined for return periods greater than ∼475 or less than ∼10,000 years). Changes in 2023 time-independent seismic hazard...
Authors
Mark D. Petersen, Allison M. Shumway, Peter M. Powers, Edward H. Field, Morgan P. Moschetti, Kishor S. Jaiswal, Kevin R. Milner, Sanaz Rezaeian, Arthur D. Frankel, Andrea L. Llenos, Andrew J. Michael, Jason M. Altekruse, Sean Kamran Ahdi, Kyle B. Withers, Charles Mueller, Yuehua Zeng, Robert E. Chase, Leah M. Salditch, Nico Luco, Kenneth S. Rukstales, Julie A. Herrick, Demi Leafar Girot, Brad T. Aagaard, Adrian Bender, Michael L. Blanpied, Richard W. Briggs, Oliver S. Boyd, Brandon S. Clayton, Christopher B. DuRoss, Eileen L. Evans, Peter J. Haeussler, Alexandra Elise Hatem, Kirstie Lafon Haynie, Elizabeth H. Hearn, Kaj M. Johnson, Zachary Alan Kortum, N. Simon Kwong, Andrew James Makdisi, Henry Mason, Daniel McNamara, Devin McPhillips, P. Okubo, Morgan T. Page, Frederick Pollitz, Justin L. Rubinstein, Bruce E. Shaw, Zheng-Kang Shen, Brian Shiro, James Andrew Smith, William J. Stephenson, Eric M. Thompson, Jessica A. Thompson Jobe, Erin A. Wirth, Robert C. Witter
The USGS 2023 Conterminous U.S. time‐independent earthquake rupture forecast The USGS 2023 Conterminous U.S. time‐independent earthquake rupture forecast
We present the 2023 U.S. Geological Survey time‐independent earthquake rupture forecast for the conterminous United States, which gives authoritative estimates of the magnitude, location, and time‐averaged frequency of potentially damaging earthquakes throughout the region. In addition to updating virtually all model components, a major focus has been to provide a better representation...
Authors
Edward H. Field, Kevin R. Milner, Alexandra Elise Hatem, Peter M. Powers, Frederick Pollitz, Andrea L. Llenos, Yuehua Zeng, Kaj M. Johnson, Bruce E. Shaw, Devin McPhillips, Jessica A. Thompson Jobe, Allison M. Shumway, Andrew J. Michael, Zheng-Kang Shen, Eileen L. Evans, Elizabeth H. Hearn, Charles Mueller, Arthur D. Frankel, Mark D. Petersen, Christopher B. DuRoss, Richard W. Briggs, Morgan T. Page, Justin L. Rubinstein, Julie A. Herrick
A comprehensive fault system inversion approach: Methods and application to NSHM23 A comprehensive fault system inversion approach: Methods and application to NSHM23
We present updated inversion‐based fault‐system solutions for the 2023 update to the National Seismic Hazard Model (NSHM23), standardizing earthquake rate model calculations on crustal faults across the western United States. We build upon the inversion methodology used in the Third Uniform California Earthquake Rupture Forecast (UCERF3) to solve for time‐independent rates of earthquakes...
Authors
Kevin R. Milner, Edward H. Field
Total shortening estimates across the western Greater Caucasus Mountains from balanced cross sections and area balancing Total shortening estimates across the western Greater Caucasus Mountains from balanced cross sections and area balancing
The Greater Caucasus orogen forms the northern edge of the Arabia-Eurasia collision zone. Although the orogen has long been assumed to exhibit dominantly thick-skinned style deformation via reactivation of high-angle extensional faults, recent work suggests the range may have accommodated several hundred kilometers or more of shortening since its ~30 Ma initiation, and this shortening...
Authors
Charles Cashman Trexler, Eric S. Cowgill, Dylan A Vasey, Nathan A. Niemi
The 2022 Chaos Canyon landslide in Colorado: Insights revealed by seismic analysis, field investigations, and remote sensing The 2022 Chaos Canyon landslide in Colorado: Insights revealed by seismic analysis, field investigations, and remote sensing
An unusual, high-alpine, rapid debris slide originating in ice-rich debris occurred on June 28, 2022, at 16:33:16 MDT at the head of Chaos Canyon, a formerly glacier-covered valley in Rocky Mountain National Park, CO, USA. In this study, we integrate eyewitness videos and seismic records of the event with meteorological data, field observations, pre- and post-event satellite imagery, and...
Authors
Kate E. Allstadt, Jeffrey A. Coe, Elaine A. Collins, Francis K. Rengers, Anne Mangeney, Scott M. Esser, Jana Pursley, William L. Yeck, John Bellini, Lance R. Brady
Rapid Source Characterization of the 2023 Mw 6.8 Al Haouz, Morocco, Earthquake Rapid Source Characterization of the 2023 Mw 6.8 Al Haouz, Morocco, Earthquake
The U.S. Geological Survey (USGS) National Earthquake Information Center (NEIC) estimates source characteristics of significant damaging earthquakes, aiming to place events within their seismotectonic framework. Contextualizing the 8 September 2023, Mw 6.8 Al Haouz, Morocco, earthquake is challenging, because it occurred in an enigmatic region of active surface faulting, and low...
Authors
William L. Yeck, Alexandra Elise Hatem, Dara Elyse Goldberg, William D. Barnhart, Jessica A. Thompson Jobe, David R. Shelly, Antonio Villasenor, Harley Benz, Paul S. Earle
Panel review of Ground Motion Characterization Model in 2023 NSHM Panel review of Ground Motion Characterization Model in 2023 NSHM
The 2023 National Seismic Hazard Model (NSHM; Petersen et al., 2023) has two major components – a seismic source characterization (SSC) model and a ground motion characterization (GMC) model. The US Geological Survey (USGS) established separate panels to review and provide input on these two models. Both panels are advisory, meaning that they provide input on technical issues for...
Authors
Jonathan P. Stewart, Norman A. Abrahamson, Gail M. Atkinson, John G. Anderson, Kenneth W. Campbell, Chris H. Cramer, Michael Kolaj, Grace Alexandra Parker
Erratum to an evaluation of the timing accuracy of global and regional seismic stations and networks Erratum to an evaluation of the timing accuracy of global and regional seismic stations and networks
No abstract available.
Authors
Yihong Yang, Xiadong Song, Adam T. Ringler
The lunar cratering chronology The lunar cratering chronology
This chapter provides an introduction to crater-size frequency distribution (CSFD) measurements and presents a review of the work performed on dating lunar geological units using CSFDs since the last New Views of the Moon volume (2006), including various volcanic and tectonic features, as well as individual impact craters. At the end of the chapter, implications for the new CSFD age...
Authors
Harald Hiesinger, Carolyn H. Van der Bogert, G. Michael, N. Schmedemann, W. Iqbal, Stuart J. Robbins, B. Ivanov, Jean-Pierre Williams, M. Zanetti, J. Plescia, Lillian R. Ostrach, James W. Head III
Lunar mare basaltic volcanism: Volcanic features and emplacement processes Lunar mare basaltic volcanism: Volcanic features and emplacement processes
Volcanism is a fundamental process in the geological evolution of the Moon, providing clues to the composition and structure of the mantle, the location and duration of interior melting, the nature of convection and lunar thermal evolution. Progress in understanding volcanism has been remarkable in the short 60-year span of the Space Age. Before Sputnik 1 in 1957, the lunar farside was...
Authors
James W. Head III, Lionel Wilson, Harald Hiesinger, Carolyn H. Van der Bogert, Yuan Yuan Chen, James L. Dickson, Lisa Gaddis, Junichi Haruyama, Lauren Jozwiak, Erica Jawin, Chunlai Li, Jianzhong Liu, Tomokatsu Morota, Debra H. Needham, Lillian R. Ostrach, Carle M. Pieters, Tabb C. Prissel, Yuqi Qian, Lei Qiao, Malcolm R. Rutherford, David R. Scott, Jennifer L. Whitten, Long Xiao, Feng Zhang, Ouyang Ziyuan
The cartographic lunar reference frame The cartographic lunar reference frame
We describe how lunar cartographic coordinates are currently determined internationally, based on recommendations of the International Astronomical Union (IAU) Working Group on Cartographic Coordinates and Rotational Elements. Currently, a mean Earth/polar axis (ME) system-based frame and ephemeris (JPL DE 421 ME) is used for that purpose. Recently, there has been some discussion that a...
Authors
Brent A. Archinal, Al Conrad, Tom Duxbury, Daniel Hestroffer, Laurent Jorda, Randolph L. Kirk, Sergei Klioner, Jean-Luc Margot, Jürgen Oberst, Flora Paganelli, Jinsong Ping, Ken Seidelmann, David Tholen, Iwan Williams
Fractures, scarps, faults, and landslides mapped using LiDAR, Glacier Bay National Park and Preserve, Alaska Fractures, scarps, faults, and landslides mapped using LiDAR, Glacier Bay National Park and Preserve, Alaska
This map of fractures, scarps, faults, and landslides was completed to identify areas in Glacier Bay National Park and Preserve that may present a landslide-generated tsunami hazard. To address the potential of landslide and tsunami hazards in the park, the National Park Service (NPS) and the US Geological Survey (USGS) partnered to conduct a multi-year hazard assessment of Glacier Bay...
Authors
Chad Hults, Jeffrey A. Coe, Nikita N. Avdievitch