Publications
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Maximizing the science and resource mapping potential of Orbital VSWIR Spectral measurements of Mars Maximizing the science and resource mapping potential of Orbital VSWIR Spectral measurements of Mars
The last 16 years witnessed a rapid growth in understanding the composition and aqueous alteration of Mars’ surface from orbital data from the Observatoire pour la Mineralogie, l’Eau, les Glaces et l’Activité (OMEGA) [1] and Compact Reconnaissance Imaging Spectrometer for Mars (CRISM) [2]. Both are sensitive to water-, hydroxyl-, sulfate-, and carbonate-bearing and ferric phases that...
Authors
Scott L. Murchie, Raymond E. Arvidson, Janice L Bishop, Wendy M. Calvin, John Carter, John Christian, Roger N. Clark, Colin M. Dundas, Bethany L. Ehlmann, Valerie K. Fox, Abigail A. Fraeman, Timothy A Goudge, Briony H. N. Horgan, Madison N Hughes, Ellen K Leask, Alfred S. McEwen, John F Mustard, Mario Parente, Kathryn E Powell, Frank P. Seelos, Kimberly D. Seelos, Jesse D Tarnas, Christina E Viviano, James J. Wray
Current activity on the Martian surface: A key subject for future exploration Current activity on the Martian surface: A key subject for future exploration
One of the fundamental discoveries in Mars science in the last decade has been the extent and importance of current surface activity. Recent results have shifted our view of Mars from a world where the most interesting geologic events were in the distant past (similar to the Moon) to a world that undergoes active evolution and one where understanding the present is key to deciphering the...
Authors
Colin M. Dundas, Shane Byrne, Matthew Chojnacki, Serina Diniega, Ingrid J. Daubar, Christopher W. Hamilton, Candice J. Hansen, Alfred S. McEwen, Ganna Portyankina, Hanna G Sizemore
Mid-latitude ice on Mars: A science target for planetary climate histories and an exploration target for in situ resources Mid-latitude ice on Mars: A science target for planetary climate histories and an exploration target for in situ resources
In the last decade, aided by the high-resolution data and long-term monitoring by NASA’s Mars Reconnaissance Orbiter (MRO) and other spacecraft, extensive evidence has emerged supporting the presence of abundant H2O ground ice throughout much of the mid-latitudes of Mars. Growing evidence indicates that much of this ice is relatively pure, exists within a few meters of the surface, and...
Authors
Ali Bramson, Chimira Andres, Jonathan Bapst, Patricio Becerra, Samuel W Courville, Colin M. Dundas, Shannon M Hibbard, John W Holt, Suniti Karunatillake, Aditya Khuller, Michael T. Mellon, Gareth A Morgan, R. W. Obbard, Matthew R Perry, Eric I Petersen, Nathaniel E. Putzig, Hanna G Sizemore, Isaac B. Smith, David E Stillman, Paul Wooster
A critical gap: In situ measurements of surface-atmosphere interactions from outside earth A critical gap: In situ measurements of surface-atmosphere interactions from outside earth
This white paper demonstrates five points: (1) The lack of robust measurements of the vertical gradients of natural boundary layers and transport fluxes on other planetary bodies precludes adequate estimation of aeolian and other meteorological processes throughout our Solar System (§1). (2) Thus, there exist critical knowledge gaps within high-priority planetary science questions that...
Authors
Serina Diniega, Devon M. Burr, Colin M. Dundas, Brian Jackson, Michael Mischna, Scot Rafkin, Isaac B. Smith, Robert Sullivan, Timothy N. Titus, Nathalie Vriend, Ian J. Walker, Kaj E. Williams
Summary of the final report from the Ice and Climate Evolution Science Analysis group (ICE-SAG) Summary of the final report from the Ice and Climate Evolution Science Analysis group (ICE-SAG)
The Ice and Climate Evolution Science Analysis Group (ICE-SAG) was convened by the Mars Exploration Program Analysis Group (MEPAG) in fall 2018, with the aims of (1) identifying and prioritizing fundamental science questions related to the recent and ongoing evolution of Mars volatiles and climate, and (2) exploring new mission approaches that could address these high-priority science...
Authors
Serina Diniega, Nathaniel E. Putzig, Shane Byrne, Wendy M. Calvin, Colin M. Dundas, Lori K. Fenton, Paul O. Hayne, David M H Baker, John W Holt, Christine S. Hvidberg, Melinda Kahre, Michael Mischna, Gareth A Morgan, Dorothy Oehler, Ganna Portyankina, A. Deanne Rogers, Hanna G Sizemore, Isaac B. Smith, Alejandro Soto, Leslie Tamppari, Timothy N. Titus, Chris Webster
The Preventing Harassment in Science workshop: Summary and best practices for planetary science and astrobiology The Preventing Harassment in Science workshop: Summary and best practices for planetary science and astrobiology
The NASA-funded Preventing Harassment in Science workshop took place in June of 2020. Here we describe the workshop and summarize the best practices for reducing harassment that were discussed. We include a list of recommendations that can be used to take steps towards reducing harassment in the planetary science and astrobiology community.
Authors
Kristen A. Bennett, Maggie McAdam, Moses Milazzo, Patricia A. Garcia, Jenna L. Shelton, Peggy J. Gardiner, Serina Diniega, Catalina Martinez, Alexandra B. Etheridge, Alicia Rutledge, C. Richey
lsforce: A Python-based single-force seismic inversion framework for massive landslides lsforce: A Python-based single-force seismic inversion framework for massive landslides
We present an open‐source Python package, lsforce, for performing single‐force source inversions of long‐period (tens to hundreds of seconds) seismic signals. Although the software is designed primarily for landslides, it can be used for any single‐force seismic source. The package allows users to produce estimates of the three‐component time series of forces exerted on the Earth by a...
Authors
Liam Toney, Kate E. Allstadt
Ground motions in urban Los Angeles from the 2019 Ridgecrest earthquake sequence Ground motions in urban Los Angeles from the 2019 Ridgecrest earthquake sequence
We study ground-motion response in urban Los Angeles during the two largest events (M7.1 and M6.4) of the 2019 Ridgecrest earthquake sequence using recordings from multiple regional seismic networks as well as a subset of 350 stations from the much denser Community Seismic Network. In the first part of our study, we examine the observed response spectral (pseudo) accelerations for a...
Authors
Filippos Filippitzis, Monica Kohler, Tom Heaton, Robert Graves, Robert W. Clayton, Richard G. Guy, J. J. Bunn, K. M. Chandy
U.S. Geological Survey wildland fire science strategic plan, 2021–26 U.S. Geological Survey wildland fire science strategic plan, 2021–26
The U.S. Geological Survey (USGS) Wildland Fire Science Strategic Plan defines critical, core fire science capabilities for understanding fire-related and fire-responsive earth system processes and patterns, and informing management decision making. Developed by USGS fire scientists and executive leadership, and informed by conversations with external stakeholders, the Strategic Plan is...
Authors
Paul F. Steblein, Rachel A. Loehman, Mark P. Miller, Joseph R. Holomuzki, Suzanna C. Soileau, Matthew L. Brooks, Mia Drane-Maury, Hannah M. Hamilton, Jason W. Kean, Jon E. Keeley, Mason, Alexa McKerrow, James Meldrum, Edmund B. Molder, Sheila F. Murphy, Birgit Peterson, Geoffrey S. Plumlee, Douglas J. Shinneman, Phillip J. van Mantgem, Alison York
By
Ecosystems Mission Area, Natural Hazards Mission Area, Science Synthesis, Analysis, and Research Program, Science Analytics and Synthesis (SAS) Program, Alaska Science Center, Earth Resources Observation and Science (EROS) Center , Forest and Rangeland Ecosystem Science Center, Fort Collins Science Center, Geologic Hazards Science Center, Geology, Geophysics, and Geochemistry Science Center, Western Ecological Research Center (WERC), Wildland Fire Science
The San Andreas fault paleoseismic record at Elizabeth Lake: Why are there fewer surface-rupturing earthquakes on the Mojave section? The San Andreas fault paleoseismic record at Elizabeth Lake: Why are there fewer surface-rupturing earthquakes on the Mojave section?
The structural complexity of active faults and the stress release history along the fault system may exert control on the locus and extent of individual earthquake ruptures. Fault bends, in particular, are often invoked as a possible mechanism for terminating earthquake ruptures. However, there are few records available to examine how these factors may influence the along‐fault...
Authors
Sean Bemis, Katherine M. Scharer, James D. Dolan
The Mars Orbiter for Resources, Ices, and Environments (MORIE) science goals and instrument trades in radar, imaging, and spectroscopy The Mars Orbiter for Resources, Ices, and Environments (MORIE) science goals and instrument trades in radar, imaging, and spectroscopy
The Mars Orbiter for Resources, Ices, and Environments (MORIE) was selected as one of NASA's 2019 Planetary Mission Concept Studies. The mission builds upon recent discoveries and current knowledge gaps linked to two primary scientific questions: (1) when did elements of the cryosphere form and how are ice deposits linked to current, recent, and ancient climate, and (2) how does the...
Authors
Wendy M. Calvin, Nathaniel E. Putzig, Colin M. Dundas, Ali M Bramson, Briony H. N. Horgan, Kim D Seelos, Hanna G Sizemore, Bethany L. Ehlmann, Gareth A Morgan, John W Holt, Scott L. Murchie, G Wesley Patterson
A maximum rupture model for the central and southern Cascadia subduction zone—reassessing ages for coastal evidence of megathrust earthquakes and tsunamis A maximum rupture model for the central and southern Cascadia subduction zone—reassessing ages for coastal evidence of megathrust earthquakes and tsunamis
A new history of great earthquakes (and their tsunamis) for the central and southern Cascadia subduction zone shows more frequent (17 in the past 6700 yr) megathrust ruptures than previous coastal chronologies. The history is based on along-strike correlations of Bayesian age models derived from evaluation of 554 radiocarbon ages that date earthquake evidence at 14 coastal sites. We...
Authors
Alan Nelson, Christopher DuRoss, Robert C. Witter, Harvey M. Kelsey, Simon E. Engelhart, Shannon A. Mahan, Harrison J. Gray, Andrea D. Hawkes, Benjamin P. Horton, Jason S. Padgett