Publications
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Workshop on terrestrial analogs for planetary exploration
Terrestrial analogs are an important part of the robotic and human exploration of the solar system. One of the main recommendations from a community survey conducted in 2019 was to hold a workshop to increase communication and share resources among scientists, engineers, data managers, educators, and students who are involved, or hope to be involved, in terrestrial analog studies.
Authors
Lauren A. Edgar, Amber Gullikson, M. Elise Rumpf, James Skinner
Geophysical constraints on the crustal architecture of the transtensional Warm Springs Valley fault zone, northern Walker Lane, western Nevada, USA
The Walker Lane is a zone of distributed transtension where normal faults are overprinted by strike-slip motion. We use two newly-acquired high-resolution seismic reflection profiles and a reprocessed Consortium for Continental Reflection Profiling (COCORP) deep crustal reflection profile to assess the subsurface geometry of the Holocene-active, transtensional Warm Springs Valley fault zone (WSVFZ
Authors
Richard W. Briggs, William J. Stephenson, J.H. McBride, Jackson K. Odum, Nadine G. Reitman, Ryan D. Gold
Intelligent monitoring system for real-time geologic storage, optimization, and reservoir management
The objective of the subtask was to develop a near-real-time monitoring system for seismic data at the Decatur, IL, geologic carbon sequestration (GCS) site and specifically include fiber-optic cable derived distributed acoustic signal (DAS) data in the process. Owing to the large volumes of data, we opted to utilize existing deep borehole conventional seismic sensors for detection and pull DAS an
Authors
J. Ole Kaven
Clays are not created equal: How clay mineral type affects soil parameterization
Clay minerals dominate the soil colloidal fraction and its specific surface area. Differences among clay mineral types significantly influence their effects on soil hydrological and mechanical behavior. Presently, the soil clay content is used to parameterize soil hydraulic and mechanical properties (SHMP) for land surface models while disregarding the type of clay mineral. This undifferentiated u
Authors
Peter Lehmann, Ben Leshchinsky, Surya Gupta, Benjamin B. Mirus, Samuel Bickel, Ning Lu, Dani Or
Developing landslide chronologies using landslide-dammed lakes in the Oregon Coast Range
The Oregon Coast Range is a dynamic landscape that is continually shaped by shallow and deep-seated landslides that can have disastrous consequences to infrastructure and human lives. Searching for evidence of potentially coseismic mass wasting is incredibly difficult, particularly when historical observations are limited. Landslide-dammed lakes with submerged “ghost forests” in the Oregon Coast R
Authors
Logan Wetherell, William Struble, Sean Richard LaHusen
Imaging the next Cascadia earthquake: Optimal design for a seafloor GNSS- A network
The Cascadia subduction zone in the Pacific Northwest of the United States of America capable of producing magnitude ∼9 earthquakes, likely often accompanied by tsunamis. An outstanding question in this region is the degree and spatial extent of interseismic strain accumulation on the subduction megathrust. Seafloor geodetic methods combining GNSS and underwater acoustic ranging (GNSS-A) are capab
Authors
Eileen L. Evans, Sarah E. Minson, David Chadwell
Does earthquake stress drop increase with depth in the crust?
We combine earthquake spectra from multiple studies to investigate whether the increase in stress drop with depth often observed in the crust is real, or an artifact of decreasing attenuation (increasing Q) with depth. In many studies, empirical path and attenuation corrections are assumed to be independent of the earthquake source depth. We test this assumption by investigating whether a realisti
Authors
Rachel E Abercrombie, Daniel T. Trugman, Peter M. Shearer, Xiaowei Chen, Jiewen Zhang, Colin Nathanael Pennington, Jeanne L. Hardebeck, Thomas H W Goebel, Christine J Ruhl
A preliminary regional geomorphologic map in Utopia Planitia of the Tianwen-1 Zhurong Landing Region
A geomorphologic map is an important step to understanding the geologic context and history of a site; here, we present an initial geomorphologic map for an area spanning 22°–26°N, 108°–112°E in the Utopia Planitia (UP) region on Mars. This site is of special interest because it contains the May 2021 landing site of the Zhurong rover from Tianwen-1. Utopia Planitia exhibits many lobate features th
Authors
Mackenzie M Mills, Alfred S. McEwen, Chris Okubo
The 6 May 1947 Milwaukee, Wisconsin, earthquake
The State of Wisconsin is not known for earthquake activity. The authoritative public‐facing U.S. Geological Survey Comprehensive Catalog of earthquakes includes only three small (magnitude < 2) earthquakes in the state, all instrumentally recorded. Although other catalogs include more events in Wisconsin, experience has shown that many types of events, such as explosions and cryoseisms, have made
Authors
Susan E. Hough
Improvements to the Third Uniform California Earthquake Rupture Forecast ETAS Model (UCERF3‐ETAS)
We describe recent improvements to the Third Uniform California Earthquake Rupture Forecast ETAS Model (UCERF3‐ETAS), which continues to represent our most advanced and complete earthquake forecast in terms of relaxing segmentation assumptions and representing multifault ruptures, elastic‐rebound effects, and spatiotemporal clustering (the latter to represent aftershocks and otherwise triggered ev
Authors
Edward H. Field, Kevin R. Milner, Morgan T. Page, William H. Savran, Nicholas van der Elst
Advancing cave detection using terrain analysis and thermal imagery
Since the initial experiments nearly 50 years ago, techniques for detecting caves using airborne and spacecraft acquired thermal imagery have improved markedly. These advances are largely due to a combination of higher instrument sensitivity, modern computing systems, and processor-intensive analytical techniques. Through applying these advancements, our goals were to: (1) Determine the efficacy o
Authors
J. Judson Wynne, Jeff Jenness, Derek Sonderegger, Timothy N. Titus, Murzy D. Jhabvala, Nathalie A. Cabrol
Effect of fixing earthquake depth in ShakeAlert algorithms on performance for intraslab earthquakes
We investigate whether assuming a fixed shallow depth in the ShakeAlert network‐based earthquake early warning system is sufficient to produce accurate ground‐motion based alerts for intraslab earthquakes. ShakeAlert currently uses a fixed focal depth of 8 km to estimate earthquake location and magnitude. This is an appropriate way to reduce computational costs without compromising alert accuracy
Authors
Mika Thompson, J. Renate Hartog, Erin Wirth