7th International Planetary Dunes Workshop

May 17–20, 2022

 

Program

Times listed are Mountain Daylight Time (MDT).

Find your local time here.

 

Tuesday, May 17, 2022

9:00 a.m.

McDaniel Hall, Room 101

From the Bottoms of the Oceans to the Outer Solar System

11:00 a.m.

McDaniel Hall, Room 101

Sliding, Sediment, and Sediment Budgets

2:00 p.m.

McDaniel Hall, Room 101

Dune Dynamics and Winds

3:45 p.m.

McDaniel Hall, Room 101

The Great Sand Dunes: Science and Exploration

5:00 p.m.

McDaniel Hall, Room 101

Poster Lightning Talks

6:00 p.m.

McDaniel Hall, Outside Room 101

Poster Session

 

Wednesday, May 18, 2022

8:00 a.m.

McDaniel Hall, Room 101

Field Trip: Great Sand Dunes National Monument

 

Thursday, May 19, 2022

9:00 a.m.

McDaniel Hall, Room 101

Saltation and Dune Migration

10:45 a.m.

McDaniel Hall, Room 101

Breakout Groups: Goals, Objectives, and Investigations

2:00 p.m.

McDaniel Hall, Room 101

Ripples, Megaripples, and TARs

3:30 p.m.

McDaniel Hall, Room 101

Landing Site Characterization and Off World In Situ Studies

 

Friday, May 20, 2022

9:00 a.m.

McDaniel Hall, Room 101

Erosion: The Final In Situ Process

10:45 a.m.

McDaniel Hall, Room 101

Goals Document Reports and Discussions

1:30 p.m.

McDaniel Hall, Room 101

Science Organizing Committee and Synthesizers

 

 

Tuesday, May 17, 2022

FROM THE BOTTOMS OF THE OCEANS TO THE OUTER SOLAR SYSTEM

9:00 a.m.  McDaniel Hall, Room 101

Chairs: Clement Narteau and Hezi Yizhaq

 

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

Titus T.*

Workshop Introductions

9:15 a.m.

Lapotre M. G. A.*  Ewing R. C.  Rubanenko L.  Claudin P.  Carpy S.  Gunn A.

Stability of Eolian Bedforms on Planetary Surfaces: Recent Advances and Remaining Questions [#3014]
Alien bedforms / Are an earthly mystery. / Let’s explore and solve!

9:30 a.m.

Duran Vinent O. *  Andreotti B.  Claudin P.  Pahtz T.

Predictions of Ripples and Dunes in Water and Planetary Environments [#3031]
Here we combine a hydrodynamic model that predicts ripples and dunes formation in planetary conditions with a transport model to provide a complete description of water and planetary bedforms for mono-disperse sand and non-suspended transport.

9:45 a.m.

Bonnefoy L. E. *  Hayes A. G.  Lucas A.  Rodriguez S.  Poggiali V.  Lalich D. E.  Lorenz R. D.  Le Gall A.

Dunes of the Dragonfly Landing Site Seen by the Cassini Radar [#3035]
Radar brightness of dunes changes with observation angles (incidence and azimuth) and surface composition and roughness. Examining these variations at the dunes of the Dragonfly landing site on Titan points to smooth, homogeneous, organic sand.

10:00 a.m.

Carpy S. *  Collet A.  Massé M.  Bourgeois O.  Bordiec M.

Morphological and Physical Interpretations of Cold Dunes on Louth Crater Ice Cap, Mars [#3012]
Near the martian North Polar Cap, Louth Crater perennial ice cap is subjected to seasonal cycles of condensation and sublimation. Cold dunes are observed on the younger icy area of the cap and their formation could be explained by mass transfer.

10:15 a.m.

 

Panel Discussion

10:30 a.m.

 

Brainstorming: Goals, Objectives, and Investigations

10:45 a.m.

 

Break

 

Tuesday, May 17, 2022

SLIDING, SEDIMENT, AND SEDIMENT BUDGETS

11:00 a.m.   McDaniel Hall, Room 101

Chairs:  Lynn Neakrase and Orencio Duran Vinent

 

Times

Authors (*Presenter)

Abstract Title and Summary

11:00 a.m.

Dinwiddie C. L. Ph.D. *  Titus T. N. Ph.D.

Dust Plumes Lofted by Sliding CO2 Ice Blocks, Russell Megadune, Mars [#3004]
Rad insolation / Induced basal sublimation / Sets jets in motion / And sliding icy blocks / Loft dusty plumes.

11:15 a.m.

Sankey J. B.  Kasprak A.  Chojnacki M.  Titus T. N. *  Caster J.  Debenedetto G.

Can We Accurately Estimate Aeolian Dunefield Sediment Budgets on Mars? [#3026]
Sediment budgets are fundamentally important for aeolian planetary science. This presentation highlights the lack of quantitative understanding of errors for sediment budgets measured with remote sensing in planetary research.

11:30 a.m.

Burr D. M. *  Viviano C. E.  Michaels T. I.  Chojnacki M.  Jacobsen R. E.

Possible Terrestrial Analogs and Their Implications for Dark Sand Source Outcrops in Aeolis Dorsa, Western Medusae Fossae Formation, Mars [#3010]
Outcrops in the Aeolis Dorsa region of the western Medusae Fossae Formation (MFF) are interpreted as sand sources. Prior terrestrial studies support this inference from Mars data analysis that the MFF is a reasonable source of olivine-rich sand.

11:45 a.m.

Mishev I. *  Smith I. B.

Measuring Sediments of Western Valles Marineris Using Imagery, Radar, and Neural Networks to Constrain Past Wet Environments [#3030]
Deltoids on Mars being detected and mapped individually using a neural network and HiRISE imagery.

12:00 p.m.

 

Panel Discussion

12:15 p.m.

Titus T. *

Brainstorming: Goals, Objectives, and Investigations

12:30 p.m.

 

Lunch

 

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Tuesday, May 17, 2022

DUNE DYNAMICS AND WINDS

2:00 p.m.   McDaniel Hall, Room 101

Chairs:  Matt Telfer and Elena Favaro

 

Times

Authors (*Presenter)

Abstract Title and Summary

2:00 p.m.

Rubanenko L. *  Perez-Lopez S.  Fenton L. K.  Ewing R. C.  Lapotre M. G. A.

Winds on Mars Inferred from the Global Distribution of Barchan Dunes Using a Convolutional Neural Network [#3022]
We use machine learning to outline over a million isolated barchan dunes on Mars from spacecraft imagery and globally map their morphology to study the link between dune migration, topography and the present and recent global circulation on Mars.

2:15 p.m.

Marvin M. C. *  Gunn A.  Day M.  Lapôtre M. G. A.

Quantifying Dune Interactions on Planetary Surfaces: Exploring Pattern Development Dependence on Environmental Conditions [#3023]
Fields of wind-blown dunes / Migrate and self-organize / Can we decipher?

2:30 p.m.

Chojnacki M. *  Vaz D. A.  Silvestro S.  Smith I. B.

Multidirectional Dune Dynamics Under Seasonal Winds on Mars [#3024]
The purpose of this work is to characterize and explain how martian aeolian bedform systems evolve spatially and temporally under multi-directional wind regimes.

2:45 p.m.

Narteau C. *   P.  Dong Z.  Claudin P.  Rodriguez S.  An Z.  Gadal C.  Courrech du Pont S.

Coexistence of Two Dune Growth Mechanisms in a Landscape Scale Experiment [#3008]
We use a set of landscape-scale experiments to identify two independent dune growth mechanisms and demonstrate that, depending on sand availability, the same wind regime can lead to two different dune orientations under natural wind conditions.

3:00 p.m.

 

Panel Discussion

3:15 p.m.

 

Brainstorming: Goals, Objectives, and Investigations

3:30 p.m.

 

Break

 

Tuesday, May 17, 2022

THE GREAT SAND DUNES: SCIENCE AND EXPLORATION

3:45 p.m.   McDaniel Hall, Room 101

Chairs:  Timothy Titus and Serina Diniega

 

Times

Authors (*Presenter)

Abstract Title and Summary

3:45 p.m.

 

Valdez A. D. *

 

Variable Wind Regimes and Dune Development at Great Sand Dunes, Colorado, USA [#3033]
A presentation about multiple wind regimes measured around Great Sand Dunes. Originally published in Inland Dunes of North America. Wind regimes are compared to dune type and dune mobility.

4:00 p.m.

Valdez A. D. *

Grand Sand Dunes Field Trip Organization and Preparation

4:30 p.m.

 

Brainstorming: Goals, Objectives, Investigations

4:45 p.m.

 

Break

 

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Tuesday, May 17, 2022

POSTER LIGHTNING TALKS

5:00 p.m.   McDaniel Hall, Room 101

 

Times

Presentation

5:00 p.m.

Lightning Talks

5:15 p.m.

Brainstorming: Goals, Objectives, and Investigations

5:30 p.m.

Break

 

Tuesday, May 17, 2022

POSTER SESSION:  POSTERS

6:00 p.m.   McDaniel Hall, Outside Room 101

 

Authors (*Denotes Presenter)

Abstract Title and Summary

Berger L. M.  Ewing R. C.  Lapôtre M. G. A.  Hasson M.

Topographic Analysis of a Coarse-Grained Ripple Field, Algodones Dunes, California [#3032]
Topological and morphological analysis of coarse-grained ripples at Algodones Dunes in an effort to determine how the utilization of high resolution aerial datasets on Earth can be applied to the study of aeolian bedforms on other planets.

Chojnacki M.  Vaz D. A.  Silvestro S.  Silva D. C. A.

Active Megaripples and Transverse Aeolian Ridges on Mars: An Update [#3029]
This abstract aims to provide an update on a project dedicated to understanding how martian aeolian bedform systems evolve over decadal time periods — particularly, the dynamics of megaripples and TARs.

Collins M. Q.

The Effect of Land Surface Properties on the Formation of Sand Seas on Saturn’s Moon Titan [#3001]
I use the NASA ROCKE-3D general circulation model to simulate origins of Saturn’s moon Titan’s dune systems. I expand upon previous work with the first implementation of the ROCKE-3D GCM to Titan and the inclusion of surface heterogeneity.

Lester C. W.  Murray A. B.  Duran O.  Claudin P.  Andreotti B.

Impact Ripples: Emergence and Scalings Across Environments [#3027]
Aeolian impact ripples are ubiquitous across our solar system. We present numerical simulations of impact ripples to show how they behave under differing environmental and transport conditions and how they compare to wind tunnel and field data.

Neakrase L. D. V.  Chanover N.  Huber L.

PDS Atmospheres Node: Updates to Services and Planned Archive Upgrades [#3019]
The NASA PDS Atmospheres Node is establishing the Atmospheric Modeling Annex as a new service in response to PDE IRB findings. Upgrades to data provider and user services and data access (esp. Venus and aeolian lab & field data) are also planned.

Visick E.  Telfer M. W.

Sinuous Longitudinal Large Ripples on Barchanoid Bedforms, Herschel Crater, Mars [#3036]
We investigate dunes in Herschel crater, Mars, once interpreted as indurated and superimposed with yardangs. Higher resolution data shows they are longitudinal, sinuous large ripples, and that the flanks have topographically-controlled bedforms.

Zawaski M. J.  Lund M. L.  Ewing R. C.  Radebaugh J.

Linking Compositional and Durability Variations of Volcaniclastic Sands to Eolian Dunes [#3028]
Our investigation of a martian analogue, mixed mafic, felsic, and carbonate dune field, in Utah revealed evolution in grainsize and composition across a 10-dune transect. µXRF scans constrain which minerals and grain sizes are correlated.

Zimbelman J. R.

What’s z0 Got to Do with It? Collecting Wind Profiling Data in the Field [#3011]
Aerodynamic surface roughness comes in three ‘flavors’ for sand sheets, megaripples, and vegetated dune and interdune areas. Interpretation of roughness requires careful consideration of factors that can affect the usefulness of wind profile data.

 

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Wednesday, May 18, 2022

FIELD TRIP: GREAT SAND DUNES NATIONAL MONUMENT

8:00 a.m.   McDaniel Hall, Room 101

 

A field trip is planned for day two to the Great Sand Dunes National Monument.

 

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Thursday, May 19, 2022

SALTATION AND DUNE MIGRATION

9:00 a.m.   McDaniel Hall, Room 101

Chairs:  Devon Burr and Amber Gullikson

 

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

Titus T. *

Daily Review

9:15 a.m.

Gadal C.  Narteau C.  Ewing R. C.  Gunn A.  Jerolmack D.  Andreotti B.  Claudin P. *

Spatial and Temporal Development of Incipient Dunes at White Sands Dune Field, New Mexico, USA [#3003]
We report extensive topographic observations of the initiation, growth, and migration of sand dunes, and find a remarkably precise agreement with the predictions of an idealized aerodynamic theory.

9:30 a.m.

Narteau C. *  Gao X.  Gadal C.

Migration of Reversing Dunes Against the Sand Flow Path as a Singular Expression of the Speed-up Effect [#3006]
The speed-up effect varies as the steepness of the dune slopes. In a zone of frequent wind reversals in the Taklamakan Desert, we show and explain how this effect can cause the dunes to migrate against the transport direction on a flat sand bed.

9:45 a.m.

Narteau C. *   P.  Dong Z.  Claudin P.  Rodriguez S.  An Z.  Fernandez-Cascales L.  Gadal C.  Courrech du Pont S.

Direct Validation of Dune Instability Theory [#3007]
In a landscape-scale experiment with controlled initial and boundary conditions, we quantify the size-selection mechanism leading to the emergence of periodic dune patterns, which is directly related to flow and sand transport properties.

10:00 a.m.

Andreotti B.  Claudin P. *  Iversen J. J.  Merrison J. P.  Rasmussen K. R.

Saltation Threshold and Impact Ripple Dynamics Down to Martian Pressure and Below [#3002]
We report experiments providing evidence for a new saltation regime, relevant for the martian environment, where the transport threshold is significantly lower than expected. We also reproduce bedforms analogous to small Martian impact ripples.

10:15 a.m.

 

Panel Discussion

10:30 a.m.

 

Break

 

Thursday, May 19, 2022

BREAKOUT GROUPS: GOALS, OBJECTIVES, AND INVESTIGATIONS

10:45 a.m.   McDaniel Hall, Room 101

Chairs:  Timothy Titus and Serina Diniega

 

Times

Authors (*Presenter)

Abstract Title and Summary

10:45 a.m.

Titus T *

The Concept and Expected End State

11:00 a.m.

 

Breakout Groups

12:00 p.m.

 

Breakout Group Reports

12:30 p.m.

 

Lunch

 

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Thursday, May 19, 2022

RIPPLES, MEGARIPPLES, AND TARS

2:00 p.m.   McDaniel Hall, Room 101

Chairs:  Simone Silvestro and Steven Banham

 

Times

Authors (*Presenter)

Abstract Title and Summary

2:00 p.m.

Vaz D. A. *  Silvestro S.  Chojnacki M.  Silva D. C. A.

Global Wavelength Survey of Martian Large Ripples and TARs [#3016]
We present the results of a global wavelength survey of large ripples and TARs. With this new dataset we re-evaluate how well the wind drag hypothesis predicts bedforms’ spacing on Mars.

2:15 p.m.

Titus T. N. *  Cushing G. E.  Gullikson A. L.  Williams K. E.

Grand Falls Dune Field 2022 Ripple Field [#3005]
GFDF has been studied as a Mars aeolian analog site since 2013. The sediment composition is bimodal, consisting of felsic sand grains and mafic cinders. Ripples and megaripples are actively migrating with wavelengths from centimeters to meter-scale.

2:30 p.m.

Gullikson A. L. *  Titus T. N.  Williams K. E.  Cushing G.

Grand Falls Dune Field, Northern Arizona: Ripple Field Imaging and Meteorological Data Release for 2021 [#3017]
Meteorological and subsurface temperature and relative humidity data have been collected at Grand Falls dune field for the entire year of 2021, in addition to imaging an active ripple field within the greater dune field to monitor its migration.

2:45 p.m.

Yizhaq H. *  Tholen K.  Saban L.  Pähtz T.  Vinent Duran O.  Katra I.  Kroy K.

Megaripples on Earth and Mars can Uniquely be Identified by a Robust Quantitative Feature in Their Grain-Size Distribution [#3020]
We present a robust and quantitative criterion, which sets megaripples apart from all other aeolian bedforms. It is based on their non-uniform grain size distribution (GSD), which exhibits a characteristic bimodality.

3:00 p.m.

 

Panel Discussion

3:15 p.m.

 

Break

 

Thursday, May 19, 2022

LANDING SITE CHARACTERIZATION AND OFF WORLD IN SITU STUDIES

3:30 p.m.   McDaniel Hall, Room 101

Chairs:  Lori Fenton and Lior Rubanenko

 

Times

Authors (*Presenter)

Abstract Title and Summary

3:30 p.m.

Silvestro S. *  Vaz D. A.  Chojnacki M.  Silva D. C. A.  Botteon A.  Tirsch D.  Salese F.  Popa C. I.  Pajola M.  Franzese G.  Mongelluzzo G.  Cozzolino F.  Porto C.  Esposito F.

Aeolian Landforms in the ExoMars Landing Site, a Regional Perspective [#3015]
PBRs, TARs and dunes in the ExoMars landing site and its surrounding, evidence for regional winds and climatic changes.

3:45 p.m.

Favaro E. A. *  Balme M. R.  Davis J.  Grindrod P. M.  Fawdon P.  McNeil J. D.  Barrett A. M.  Lewis S. R.

Using Granular Bedforms and Bedrock Landforms to Characterize the Aeolian Environment at Oxia Planum, Mars [#3018]
This work summarizes the current state of knowledge of the aeolian environment at Oxia Planum — the landing site of the ExoMars Rosalind Franklin Rover.

4:00 p.m.

Jackson B. *  Jayanthi P.  Battin R.  Crevier J.  Dodge H.

Dust Devils and Convective Vortices Observed by Mars 2020 Perseverance [#3034]
Perseverance saw / Dusty and dustless devils / More than InSight did.

4:15 p.m.

Banham S. G. *  Bedford C. C.  Gupta S.  Roberts A. L.  Dietrich W. E.  Bryk A. B.  Rubin D. M.  Grotzinger J. P.  Weintraub A.  House C. H.  Caravaca G.  Williams R. M. E.  Kah L. C.  Vasavada A. R.

The Stimson formation at the Greenheugh Pediment: Stratigraphy, Architecture and Correlation [#3021]
A review of the aeolian Stimson formation at the Greenheugh pediment, Gale crater, Mars.

4:30 p.m.

 

Panel Discussion

4:45 p.m.

Titus T. *

Daily Wrap Up

 

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Friday, May 20, 2022

EROSION: THE FINAL IN SITU PROCESS

9:00 a.m.   McDaniel Hall, Room 101

Chairs:  Matthew Chojnacki and Lior Rubanenko

 

Times

Authors (*Presenter)

Abstract Title and Summary

9:00 a.m.

Titus T. *

Daily Review

9:15 a.m.

Fenton L. K. *  Marshall J. R.  Schuerger A. S.  Smith J. K.  Kelley K. L.

Aeolian Biodispersal of Terrestrial Microorganisms Through Saltation Bombardment [#3013]
Tiny stowaways / Are sandblasted from spacecraft, / Mars’ jet-setters.

9:30 a.m.

McDougall D. *  Radebaugh J.  Kerber L.

Lithology and Yardang Size in the Puna and the Medusae Fossae Formation: Does Density Make the Difference? [#3037]
Mars yardangs are big / Model substrate density / To understand why.

9:45 a.m.

Chanteloube C.  Barrier L.  Derakshani R.  Gadal C.  Braucher R.  Payet V.  Léanni L.  Narteau C. *

Aeolian Landscape Dynamics from Source to Sink [#3009]
We analyze major landforms of the Lut Desert in Iran (depressions, mega-yardang and dune fields) to provide a comprehensive source-to-sink picture of aeolian systems on time scales from decades to millions of years.

10:00 a.m.

Diniega S. *

How to Collect In Situ Observations of Aeolian Processes? [#3025]
How do we measure / In situ activity / On planet surface?

10:15 a.m.

 

Panel Discussion

10:30 a.m.

 

Break

 

Friday, May 20, 2022

GOALS DOCUMENT REPORTS AND DISCUSSIONS

10:45 a.m.   McDaniel Hall, Room 101

Chairs:  Timothy Titus and Serina Diniega

 

Times

Authors (*Presenter)

Abstract Title and Summary

10:45 a.m.

 

Introduction

11:00 a.m.

 

Goal 1: Objectives, Investigations, and Measurements

11:15 a.m.

 

Goal 2: Objectives, Investigations, and Measurements

11:30 a.m.

 

Goal 3: Objectives, Investigations, and Measurements

11:45 a.m.

 

Goal 4: Objectives, Investigations, and Measurements

12:00 p.m.

 

Panel Discussion

12:30 p.m.

 

Concluding Remarks

 

Friday, May 20, 2022

SCIENCE ORGANIZING COMMITTEE AND SYNTHESIZERS

1:30 p.m.   McDaniel Hall, Room 101

Chairs:  Timothy Titus and Serina Diniega

 

Times

Presenters

Presentation

1:30 p.m.

Science Organizing Committee *

Science Organizing Committee and Synthesizers

 

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