Publications
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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
Executive Summary Arey Lagoon, located in eastern Arctic Alaska, supports a highly productive ecosystem, where soft substrate and coastal wet sedge fringing the shores are feeding grounds and nurseries for a variety of marine fish and waterfowl. The lagoon is partially protected from the direct onslaught of Arctic Ocean waves by a barrier island chain (Arey Island) which in itself...
Authors
Li H. Erikson, Ann E. Gibbs, Bruce M. Richmond, Curt D. Storlazzi, Benjamin M. Jones, Karin Ohman
Apparent earthquake rupture predictability Apparent earthquake rupture predictability
To what extent can the future evolution of an ongoing earthquake rupture be predicted? This question of fundamental scientific and practical importance has recently been addressed by studies of teleseismic source time functions (STFs) but reaching contrasting conclusions. One study concludes that the initial portion of STFs is the same regardless of magnitude. Another study concludes...
Authors
M.-A. Meier, P. Ampuero, Elizabeth S. Cochran, Morgan T. Page
A ground‐motion prediction model for shallow crustal earthquakes in Greece A ground‐motion prediction model for shallow crustal earthquakes in Greece
Using a recently completed database of uniformly processed strong‐motion data recorded in Greece, we derive a ground‐motion prediction model (GMPM) for horizontal‐component peak ground velocity, peak ground acceleration, and 5% damped pseudoacceleration response spectra, at 105 periods ranging from 0.01 to 10 s. The equations were developed by modifying a global GMPM, to account for more...
Authors
David Boore, Jonathan P. Stewart, Andreas Skarlatoudis, Emel Seyhan, Basil Margaris, Nikos Theodoulidis, Emmanual Scordilis, Ionnis Kalogeras, Nikos Klimis, Nikos Melis
A unified model of crustal stress heterogeneity from borehole breakouts and earthquake focal mechanisms A unified model of crustal stress heterogeneity from borehole breakouts and earthquake focal mechanisms
Observations of crustal stress orientation from the regional inversion of earthquake focal mechanisms often conflict with those from borehole breakouts, possibly indicating local stress heterogeneity, either laterally or with depth. To investigate this heterogeneity, we compiled SHmax estimates from previous studies for 57 near‐vertical boreholes with measured breakout azimuths across...
Authors
Karen Luttrell, Jeanne L. Hardebeck