Publications
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Asteroid impacts - downwind and downstream effects
For this abstract, we have selected an impact location, consistent with the PDC2021 initial scenario [1], in the San Juan Mountains, in southwestern Colorado. This is a low-density population area but is part of the watershed system within the Colorado River basin, a major source for water and power for the southwestern United States. Several large cities and major airports are...
Authors
Timothy N. Titus, D. Ross Robertson, Joel B. Sankey, Larry G. Mastin
The scientific rationale for deployment of a long-lived geophysical network on the Moon
This white paper focuses on the scientific rationale for deploying a global, long-lived network of geophysical instruments on the surface of the Moon to understand the nature and evolution of the lunar interior from the crust to the core.
Authors
Renee C. Weber, Clive Neal, Robert E. Grimm, Matthias Grott, Nick Schmerr, Mark Wieczorek, James Steele Williams, Bruce Banerdt, Caroline Beghein, Peter Chi, Douglas Currie, Simone Dell'Agnello, Jared Espley, Raphael Garcia, Ian Garrick-Bethell, Heidi Haviland, Stephen Indyk, Catherine S. Johnson, Taichi Kawamura, Sharon Kedar, Philippe Lognonné, Seiichi Nagihara, Yosio Nakamura, Ceri Nunn, Lillian R. Ostrach, Mark Panning, Noah E. Petro, Matthew Siegler, Thomas R. Watters, Kris Zacny, S. Hop Bailey, Maria E. Banks, Donald Barker, Hannes Bernhardt, Valentin Bickel, Joshua T.S. Cahill, Jackie Clark, Dani DellaGiustina, Jesse-Lee Dimech, Andrew Dombard, Catherine Elder, Lindy Elkins-Tanton, Marshall Eubanks, Kerri Donaldson Hanna, Jan Harms, Steve Hauck, Lon Hood, Jose Hurtado, Seth Jacobson, Devanshu Jha, James Tuttle Keane, Amir Khan, Walter Kiefer, Martin Knapmeyer, Brigitte Knapmeyer-Endrun, Krishan Khurana, Juan Manuel Lorenzo, Angela Marusiak, Patrick McGovern, Laurent Montesi, Francis Nimmo, Deanna Phillips, Jacob A. Richardson, Charles K. Shearer, Krista Soderlund, Sean C. Solomon, Tilman Spohn, Eleonore Stutzmann, Sonia Tikoo, Slava Turyshev, Dany Waller, Ryuhei Yamada, Maria Zuber
A Next Generation Lunar Orbiter mission
The Moon is the scientific foundation for our knowledge of the early evolution and impact history of the terrestrial planets. Over the last decades the lunar science community has made significant progress in addressing key lunar science and exploration goals, while defining many new high-priority scientific questions regarding the formation and evolution of the Moon. On a broad scale...
Authors
Timothy D. Glotch, Lynne Carter, Pamela Clark, Brett W. Denevi, Benjamin T Greenhagen, G Wesley Patterson, Noah E. Petro, Kurt Retherford, Sarah Valencia, Joshua T.S. Cahill, Ryan Watkins, Kerri Donaldson Hanna, Catherine Elder, Harald Hiesinger, Georgiana Kramer, Timothy Livengood, Heather Meyer, Lillian R. Ostrach, Michael Poston, Morgan Schusterman, Matthew Siegler, Emerson Speyerer, Angela Stickle, Carolyn H. Van der Bogert, Daniel Moriarty, Lisa Gaddis
GANGOTRI mission concept on the glacial key to the Amazonian climate of Mars
The GANGOTRI mission concept would investigate in situ the geologic origins of midlatitudinal Martian glaciers, as underlain by Amazonian climate evolution, by riddling the ice with a hybrid thermo-mechanical drill for deep englacial sampling. GANGOTRI would use regolith compositional measurements to characterize ice-regolith interaction, and stable isotope measurements to characterize...
Authors
Suniti Karunatillake, Ali M. Bramson, Kris Zacny, Colin M. Dundas, Lujendra Ojha, Oded Aharonson, Eran Vos, Don R Hood, A. M. Rogers, Joseph S. Levy, Peter T. Doran, Kathleen Mandt, Jack Wilson, Emily B Hughes, Heidi Fuqua-Haviland, Jeffrey Moersch, Scott M. Perl, Dewan E. Haque, J. R. Skok, Harish, S. Vijayan, A. Bhardwaj, Brent Christner, Hanna G. Sizemore, A Kereszturi, Norbert Schorghofer, Kurt Retherford, Paul Niles, Juan Manuel Lorenzo, Katherine Mesick, Heather Franz, Jose Rodriguez-Manfredi, Daniel Coupland, Peter Bertone
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 R. 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 R. Wray
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
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 M. Bramson, Chimira Andres, Jonathan Bapst, Patricio Becerra, Samuel W Courville, Colin M. Dundas, Shannon M Hibbard, John W Holt, Suniti Karunatillake, Aditya R. Khuller, Michael T. Mellon, Gareth A. Morgan, R. W. Obbard, Matthew 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
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 P. Jackson, Michael A. Mischna, Scot C.R. Rafkin, Isaac B. Smith, Robert M. 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)
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 W. Baker, John W Holt, Christine S. Hvidberg, Melinda A. Kahre, Michael A. Mischna, Gareth A. Morgan, Dorothy Oehler, Ganna Portyankina, A. M. Rogers, Hanna G. Sizemore, Isaac B. Smith, Alejandro Soto, Leslie K Tamppari, Timothy N. Titus, Chris Webster
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 P. Milazzo, Patricia A. Garcia, Jenna Shelton, Peggy J. Gardiner, Serina Diniega, Catalina Martinez, Alexandra B. Etheridge, Alicia Rutledge, C. Richey
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
Alternating wet and dry depositional environments recorded in the stratigraphy of Mt Sharp at Gale Crater, Mars
The Curiosity rover is exploring Hesperian-aged stratigraphy in Gale crater, Mars, where a transition from clay-bearing units to a layered sulfate-bearing unit has been interpreted to represent a major environmental transition of unknown character. We present the first description of key facies in the sulfate-bearing unit, recently observed in the distance by the rover, and propose a...
Authors
William Rapin, Gilles Dromart, Dave Rubin, Laticia Le Deit, Nicolas Mangold, Lauren A. Edgar, Olivier Gasnault, Kenneth E. Herkenhoff, S. Lemouelic, Ryan Anderson, S. Maurice, V. K. Fox, B. L. Ehlmann, J. L. Dickson, R. C. Wiens