Publications
Filter Total Items: 7238
Planetary caves: A Solar System view of processes and products
We provide the first solar system wide compendium of speleogenic processes and products. An examination of 15 solar system bodies revealed that six cave-forming processes occur beyond Earth including volcanic (cryo and magmatic), fracturing (tectonic and impact melt), dissolution, sublimation, suffusion, and landslides. Although no caves (i.e., confirmed entrances with associated linear passages)
Authors
J. Judson Wynne, John E. Mylroie, Timothy N. Titus, Michael J. Malaska, Debra L. Buczkowski, Peter B. Buhler, Paul K. Byrne, Glen E. Cushing, Ashley Gerard Davies, Amos Frumkin, Candice Hansen-Koharcheck, Victoria Hiatt, Jason D. Hofgartner, Trudi Hoogenboom, Ulyana Horodyskyj, Kynan H. G. Hughson, Laura A. Kerber, Margaret E. Landis, Erin J. Leonard, Elodie Lesage, Alice Lucchetti, Matteo Massironi, Karl L. Mitchell, Luca Penasa, Cynthia B. Phillips, Riccardo Pozzobon, Jani Radebaugh, Francesco Sauro, Robert V. Wagner, Thomas R. Watters
Probing the upper end of intracontinental earthquake magnitude: A prehistoric example from the Dzhungarian and Lepsy faults of Kazakhstan
The study of surface ruptures is key to understanding the earthquake occurrence of faults especially in the absence of historical events. We present a detailed analysis of geomorphic displacements along the Dzhungarian Fault, which straddles the border of China and Kazakhstan. We use digital elevation models derived from structure-from-motion analysis of Pléiades satellite imagery and drone imager
Authors
Chia-Hsin Tsai, Kanatbek Abdrakhmatov, Aidyn Mukambayev, Austin John Elliott, John R. Elliott, Christoph Grützner, Edward J. Rhodes, A. H. Ivester, R. T. Walker, Roberta Wilkinson
Largest recent impact craters on Mars: Orbital imaging and surface seismic co-investigation
Two 130+ meter diameter impact craters formed on Mars during the later half of 2021. These are the two largest fresh impact craters discovered by the Mars Reconnaissance Orbiter since operations started 16 years ago. The impacts created two of the largest seismic events (magnitudes greater than 4) recorded by InSight during its three year mission. The combination of orbital imagery and seismic gro
Authors
Lilia Posiolova, P Lognonne, W B Banerdt, John Clinton, Gareth S Collins, Taichi Kawamura, S Ceylan, Ingrid J. Daubar, B Fernando, M Froment, D Giardini, Michael C. Malin, Katarina Miljkovic, Simon C Stahler, Z. Xue, Maria E Banks, E Beucler, Bruce A Cantor, C. Charalambous, N Dahmen, Paul W. Davis, Cesar M. Duran, M. Drilleau, Colin M. Dundas, F Euchner, R F Garcia, Matthew P. Golombek, Anna Horleston, C Keegan, Abdul S. Khan, D. Kim, C Larmat, Ralph D. Lorenz, L Margerin, S Menina, Mark Panning, C Pardo, C Perrin, W T Pike, M Plasman, A Rajsic, Lucie Rolland, E Rougier, Gunnar Speth, Aymeric Spiga, Alexander E. Stott, David Susko, N Teanby, A Valeh, A. Werynski, N Wojcicka, G Zenhausern
Off-fault deformation in regions of complex fault geometries: the 2013, Mw7.7, Baluchistan rupture (Pakistan)
Observations of recent earthquake surface ruptures show that ground deformations include a localized component occurring on faults, and an off-fault component affecting the surrounding medium. This second component is also referred to as off-fault deformation (OFD). The localized component generally occurs on complex networks of faults that connect at depth onto a unique fault plane, whereas OFD c
Authors
Solene Antoine, Yann Klinger, Arthur Delorme, Ryan D. Gold
Postfire debris flow hazards—Tips to keep you safe
Often referred to as “mudflows,” debris flows are a type of landslide made up of a rapidly moving mixture of dirt, rocks, trees, and water (and sometimes ash) that start on a hillside and travel downvalley. They can easily overflow channels and severely damage houses, vehicles, or other structures. Areas burned by wildfires are especially susceptible to these hazards, which can be triggered by sto
Authors
Steven Sobieszczyk, Jason W. Kean
It’s time for focused in situ studies of planetary surface-atmosphere interactions
A critical gap in planetary observations has been in situ characterization of extra-terrestrial, present-day atmospheric and surface environments and activity. While some surface activity has been observed and some in situ meteorological measurements have been collected by auxiliary instruments on Mars, existing information is insufficient to conclusively characterize the natural processes via con
Authors
Serina Diniega, Nathan Barba, Louis Giersch, Brian Jackson, Alejandro Soto, Don Banfield, Mackenzie D. Day, Gary Doran, Colin M. Dundas, Michael Mischna, Scot Rafkin, Isaac B. Smith, Rob Sullivan, Christy Swann, Timothy N. Titus, Ian J. Walker, Jacob Widmer, Devon M. Burr, Lukas Mandrake, Nathalie Vriend, Kaj E. Williams
Physical properties of the crust influence aftershock locations
Aftershocks do not uniformly surround a mainshock, and instead occur in spatial clusters. Spatially variable physical properties of the crust may influence the spatial distribution of aftershocks. I study four aftershock sequences in Southern California (1992 Landers, 1999 Hector Mine, 2010 El Mayor—Cucapah, and 2019 Ridgecrest) to investigate which physical properties are spatially correlated wit
Authors
Jeanne L. Hardebeck
Survey of fragile geologic features and their quasi-static earthquake ground-motion constraints, southern Oregon
Fragile geologic features (FGFs), which are extant on the landscape but vulnerable to earthquake ground shaking, may provide geological constraints on the intensity of prior shaking. These empirical constraints are particularly important in regions such as the Pacific Northwest that have not experienced a megathrust earthquake in written history. Here, we describe our field survey of FGFs in south
Authors
Devin McPhillips, Katherine Scharer
Lower seismogenic depth model of western U.S. Earthquakes
We present a model of the lower seismogenic depth of earthquakes in the western United States (WUS) estimated using the hypocentral depths of events M > 1, a crustal temperature model, and historical earthquake rupture depth models. Locations of earthquakes are from the Advanced National Seismic System Comprehensive Earthquake Catalog from 1980 to 2021 supplemented with seismicity in southern Cali
Authors
Yuehua Zeng, Mark D. Petersen, Oliver S. Boyd
Monitoring offshore CO2 sequestration using marine CSEM methods; constraints inferred from field- and laboratory-based gas hydrate studies
Offshore geological sequestration of CO2 offers a viable approach for reducing greenhouse gas emissions into the atmosphere. Strategies include injection of CO2 into the deep-ocean or ocean-floor sediments, whereby depending on pressure–temperature conditions, CO2 can be trapped physically, gravitationally, or converted to CO2 hydrate. Energy-driven research continues to also advance CO2-for-CH4 r
Authors
Steven Constable, Laura A. Stern
A fault‐based crustal deformation model with deep driven dislocation sources for the 2023 update to the U.S. National Seismic Hazard Model
A fault‐based crustal deformation model with deep driven dislocation sources is applied to estimate long‐term on‐fault slip rates and off‐fault moment rate distribution in the western United States (WUS) for the 2023 update to the National Seismic Hazard Model (NSHM). This model uses the method of Zeng and Shen (2017) to invert for slip rate and strain‐rate parameters based on inputs from Global P
Authors
Yuehua Zeng
Limits to coseismic landslides triggered by Cascadia Subduction Zone earthquakes
Landslides are a significant hazard and dominant feature throughout the landscape of the Pacific Northwest. However, the hazard and risk posed by coseismic landslides triggered by great Cascadia Subduction Zone (CSZ) earthquakes is highly uncertain due to a lack of local and global data. Despite a wealth of other geologic evidence for past earthquakes on the Cascadia Subduction Zone, no landslides
Authors
Alex R. R. Grant, William Struble, Sean Richard LaHusen