Publications
Filter Total Items: 7604
Minimal stratigraphic evidence for coseismic coastal subsidence during 2000 yr of megathrust earthquakes at the central Cascadia subduction zone Minimal stratigraphic evidence for coseismic coastal subsidence during 2000 yr of megathrust earthquakes at the central Cascadia subduction zone
Lithology and microfossil biostratigraphy beneath the marshes of a central Oregon estuary limit geophysical models of Cascadia megathrust rupture during successive earthquakes by ruling out >0.5 m of coseismic coastal subsidence for the past 2000 yr. Although the stratigraphy in cores and outcrops includes as many as 12 peat-mud contacts, like those commonly inferred to record subsidence...
Authors
Alan Nelson, Andrea D. Hawkes, Yuki Sawai, Ben P. Hotron, Robert C. Witter, Lee-Ann Bradley, Niamh Cahill
Improved ASCE/SEI 7-10 ground-motion scaling procedure for nonlinear analysis of buildings Improved ASCE/SEI 7-10 ground-motion scaling procedure for nonlinear analysis of buildings
An improved ASCE/SEI 7–10 ground-motion scaling procedure for three-dimensional (3D) response history analysis (RHA) of buildings is presented. In this procedure, different scale factors for two horizontal components of the ground motion are used, and their spectral shapes are considered in ground-motion selection stage. The accuracy of the improved procedure is evaluated by utilizing 3D...
Authors
Juan C. Reyes;, Catalina Gonzalez, Erol Kalkan
Response of the tallest California building during the Mw7.1 July 5, 2019 Ridgecrest, California earthquake Response of the tallest California building during the Mw7.1 July 5, 2019 Ridgecrest, California earthquake
The 73-story Wilshire Grand in downtown Los Angeles is the recently constructed tallest building in California. It is designed in conformance with performance-based design procedures. The lateral load resisting system of the building is designed with concrete core shear walls, three outriggers with buckling restrained braces (BRBs) located along the height and two three-story truss-belt...
Authors
Mehmet Celebi, S. F. Ghahari, Hamid Haddadi, Ertugrul Taciroglu
An analysis of Twitter responses to the 2019 Ridgecrest Earthquake sequence An analysis of Twitter responses to the 2019 Ridgecrest Earthquake sequence
Previous research has shown that online social networks can provide valuable insights regarding collective human responses to extreme natural events, such as earthquakes. Most previous studies focused on one large earthquake, while the 2019 Ridgecrest earthquakes involved two significant earthquakes occurring within a short period of time (a M6.4 foreshock on July 4 and a M7.1 mainshock...
Authors
Tao Ruan, Qingkai Kong, Yawen Zhang, Sara K. McBride, Qin Lv
Coastal permafrost erosion Coastal permafrost erosion
Highlights • Since the early 2000s, erosion of permafrost coasts in the Arctic has increased at 13 of 14 sites with observational data that extend back to ca. 1960 and ca. 1980, coinciding with warming temperatures, sea ice reduction, and permafrost thaw. • Permafrost coasts along the US and Canadian Beaufort Sea experienced the largest increase in erosion rates in the Arctic, ranging...
Authors
Benjamin M. Jones, Anna M. Irrgang, Louise M. Farquharson, Hugues Lantuit, Dustin Whalen, Stanislav Ogorodov, Mikhail Grigoriev, Craig E. Tweedie, Ann E. Gibbs, Matt C Strzelecki, Alisa Baranskaya, Nataliya Belova, Anatoly Sinitsyn, Art Kroon, Alexey Maslakov, Goncalo Vieira, Guido Grosse, Paul Overduin, Ingmar Nitze, Christopher V. Maio, Jacquelyn R. Overbeck, Mette Bendixen, Piotr Zagorski, Vladimir Romanovsky
Mars Subsurface Water Ice Mapping 2.0 data products and results Mars Subsurface Water Ice Mapping 2.0 data products and results
This work describes the results of the Mars Subsurface Water Ice Mapping (SWIM) project, with results on the distribution of ice on Mars from geomorphic, radar, and thermal analyses.
Authors
Nathaniel E Putzig, Gareth A Morgan, Zachary M Bain, David M Hollibaugh Baker, Ali M Bramson, Samuel W Courville, Colin M. Dundas, Rachel H Hoover, Stefano Nerozzi, Asmin V Pathare, Matthew R Perry, Eric I Petersen, Hanna G Sizemore, Bruce A Campbell, Marco Mastrogiuseppe, Michael T. Mellon, Isaac B. Smith
Landslide guide for residents of Puerto Rico Landslide guide for residents of Puerto Rico
No abstract available.
Authors
Lindsay A. Davis, Jocelyn West, Lori Peek, K. Stephen Hughes, James Joyce, William H. Schulz, Jonathan W. Godt, Darysabel Perez Martinez, Gisela Baez Sanchez, Glorymar Gomez Perez, Carolina Hincapie Cardenas, Christa von Hillebrandt, Lorna Jaramillo-Nieves, Jenniffer Santos-Hernandez, Raquel Lugo Bendezu, Yahaira Alvarez Gandia
Global seismology and tectonics: A report on International Virtual Workshop on Global Seismology and Tectonics (IVWGST-2020) Global seismology and tectonics: A report on International Virtual Workshop on Global Seismology and Tectonics (IVWGST-2020)
No abstract available.
Authors
Santanu Baruah, Chandan Dey, G. Narahari Sastry, Andrew J. Michael
Outburst floods Outburst floods
Outbursts from impounded water bodies produce large, hazardous, and geomorphically significant floods affecting the Earth as well as other planetary surfaces. Two broad classes of impoundments are: (1) valleys blocked by ice, landslides, constructed dams, and volcanic materials; and (2) closed basins such as tectonic depressions, calderas, meteor craters, and those rimmed by glaciers and...
Authors
Jim E. O'Connor, John J. Clague, Joseph S. Walder, Vernon Manville, Robin A. Beebee
Evaluation of simulated ground motions using probabilistic seismic demand analysis: CyberShake (ver. 15.12) simulations for Ordinary Standard Bridges Evaluation of simulated ground motions using probabilistic seismic demand analysis: CyberShake (ver. 15.12) simulations for Ordinary Standard Bridges
There is a need for benchmarking and validating simulated ground motions in order for them to be utilized by the engineering community. Such validation may be geared towards a specific ground motion simulation method, a target engineering application, and a specific location; the validation presented herein focuses on a bridge engineering application in southern California. Catalogs of...
Authors
Jawad Fayaz, Sanaz Rezaeian, Farzin Zareian
Changing storm conditions in response to projected 21st century climate change and the potential impact on an arctic barrier island–lagoon system—A pilot study for Arey Island and Lagoon, eastern Arctic Alaska Changing storm conditions in response to projected 21st century climate change and the potential impact on an arctic barrier island–lagoon system—A pilot study for Arey Island and Lagoon, eastern Arctic Alaska
Authors
Li H. Erikson, Ann E. Gibbs, Bruce M. Richmond, Curt D. Storlazzi, Benjamin M. Jones, Karin Ohman