Lunar and Planetary Science XLVIII (2017) sess306.pdf

Tuesday, March 21, 2017 [T306] POSTER SESSION I: PLANETARY CRYOSPHERES AND POLAR PROCESSES III: FROM MARS TO PLUTO 6:00 p.m. Town Center Exhibit Area

Smith I. B. Diniega S. Beaty D. W. Thorsteinsson T. Becerra P. et al. POSTER LOCATION #53 The 6th International Conference on Mars Polar Science and Exploration: State of Knowledge and Top Five Questions [#1701] We discuss the results of the recent 6th International Conference on Mars Polar Science and Exploration and list five questions that synthesize the discussion.

Fanara L. Gwinner K. Hauber E. Oberst J. POSTER LOCATION #54 Erosion Rate and Seasonality of Block Falls at the North Pole of Mars Based on HiRISE Images [#2710] We estimate the erosion rate of steep north polar scarps of Mars by identifying active block displacements, their source and their seasonality.

Parra S. A. Milkovich S. M. Byrne S. Russell P. S. POSTER LOCATION #55 Variations in Texture of the North Polar Residual Cap of Mars [#1719] 2D FFT analysis on HiRISE imaging of the martian north polar residual cap yields interesting regional and seasonal topographical trends on the textured surface.

Diniega S. Hansen C. J. Allen A. Grigsby N. Li Z. et al. POSTER LOCATION #56 Dune-Slope Activity Due to Frost and Wind, Throughout the North Polar Erg, Mars [#2350] After much data / We see autumn frost moves sand / Summer winds erase.

Hao J. Michael G. G. van Gasselt S. Jaumann R. POSTER LOCATION #57 Analysis of Spiders in Inca City, Mars: Spatial Distribution and Types [#1712] We mapped the distributions of spiders in the Inca city research area and classified key morphometric features as well as more subtle characteristics.

Hansen C. J. Schwamb M. E. Portyankina G. Aye K.-M. POSTER LOCATION #58 Planet Four: Terrains - Araneiform in the South Polar Region of Mars [#2812] Distribution, settings, and morphology of araneiform terrain in the martian south polar region from a citizen science project will be described.

Cushing G. E. Titus T. N. POSTER LOCATION #59 THEMIS Observes Early Morning Atmospheric H2O and CO2 Ice on Mars: Preliminary Observations [#2612] In its new early-morning orbit, THEMIS has observed springtime H2O and CO2 ice fogs and clouds in the north polar region, near the retreating seasonal cap.

Campbell J. D. Sidiropoulos P. Muller J.-P. POSTER LOCATION #60 Compositional Mapping of the Martian South Polar Residual Cap Using CRISM Infrared Spectra [#2684] Using data from CRISM, we produce maps showing compositional differences in the Mars south polar cap and look for evidence of organic signatures.

Whitten J. L. Campbell B. A. POSTER LOCATION #61 Detection of a Subsurface Dome in the South Polar Layered Deposits of Mars [#1255] A dome shaped feature is detected in the subsurface layering in the south polar layered deposits of Mars using SHARAD data.

Nerozzi S. Holt J. W. POSTER LOCATION #62 Revealing the Ice Content of the Martian North Polar Basal Unit with SHARAD [#1389] The basal unit / Abundant ice lies within / Not just dusty sand.

Lunar and Planetary Science XLVIII (2017) sess306.pdf

Holt J. W. Putzig N. E. Nerozzi S. POSTER LOCATION #63 The Chasma Buried Within the North Polar Layered Deposits, Mars [#3038] We detail new information about a major, buried chasma in Planum Boream.

Landis M. E. Byrne S. Daubar I. J. Herkenhoff K. E. Dundas C. M. POSTER LOCATION #64 Current Resurfacing Rate of the North Polar Layered Deposits, Mars [#1588] We present current accumulation rates within NPLD craters and numerical modeling results in an effort to generalize these rates to the NPLD surface.

Nguyen T. G. Moores J. E. POSTER LOCATION #65 Orientation and Spacing of Small-Scale Surface Features in Mars’ North Polar Cap: Preliminary Results [#2145] Abstract details different small-scale surface features observed on the martian north polar cap to infer possible atmospheric processes that form the features.

Sutton S. Byrne S. Herkenhoff K. E. McEwen A. S. POSTER LOCATION #66 Seasonal and Interannual Changes in Meter-Scale Pits in Mars’ North Polar Layered Deposits [#2592] Results from ongoing seasonal and annual observations of changes in meter-scale pits in the NPLD of Mars, and tests of formation hypotheses.

Conrad J. W. Abu-Hashmeh N. Nimmo F. White O. L. Singer K. et al. POSTER LOCATION #67 Preliminary Distribution and Statistics of “Bacilli” in the Southern Region of Sputnik Planitia [#1767] Pits called Bacilli / Elliptical by and large / Connecting north south.

Williams N. R. Golombek M. P. Bramson A. M. Viola D. Byrne S. et al. POSTER LOCATION #68 Surface Morphologies of Arcadia Planitia as an Indicator of Past and Present Near-Surface Ice [#2852] Morphologic clues / Arcadia Planitia / Where can ice be found?

Eason C. Nerozzi S. Holt J. W. POSTER LOCATION #69 Stratigraphic Mapping of the Cavi Unit, Planum Boreum, Mars [#2961] Mars was once warm / It became a lot colder… / The cavi is key.

Soare R. J. Conway S. J. Gallagher C. J. Dohm J. M. Williams J. P. et al. POSTER LOCATION #70 Pre- and Post-Periglacial Periglaciation in Utopia Planitia, Mars [#1473] We report the genetic-relationship of ice-rich mantles/clastically-sorted/non-sorted polygons/metre-decametre deep, rimless tiered-depressions (Utopia Planitia).

Harrison T. N. Stuurman C. M. Osinski G. R. Tornabene L. L. POSTER LOCATION #71 Deposition and Erosion of the Scalloped Depression Bearing Terrain in Western Utopia Planitia, Mars [#1500] Thick deposits of / Ice and dust eroding to / Leave scallops behind.

Head J. W. III Fastook J. L. Palumbo A. M. Denton C. A. Marchant D. R. POSTER LOCATION #72 Late Noachian Icy Highlands Equilibirum Line Altitude (ELA): Predicted Characteristics, Glacial and Periglacial Processes, and Response to Climate Change [#1540] Late Noachian icy highlands equilibrium line altitude environments include cold-based glaciers, proglacial loess plateaus, and punctuated fluvial/lacustrine.

Fastook J. L. Head J. W. POSTER LOCATION #73 Hellas Basin Rim and Wall Glaciation in the Late Noachian: Enhanced Flow, Basal Melting, Wet-Based Glaciation and Erosion, and Generation and Fate of Meltwater in the Ablation Zone [#1735] An ice sheet model that simulates flow from the rim of Hellas Crater into its interior, where warmer temperatures coupled with thick ice allow for a melted bed.

Lunar and Planetary Science XLVIII (2017) sess306.pdf

Pathare A. V. Joseph E. C. S. Crown D. A. Chuang F. C. Berman D. C. et al. POSTER LOCATION #74 Glacial Flow Within Martian Lobate Debris Aprons: Evidence from Surface Texture Mapping in Eastern Hellas [#2859] We present surface texture mapping evidence for widespread small-scale glacial flow features within lobate debris aprons in the eastern Hellas region of Mars.

Guallini L. Pauselli C. Brozzetti F. Marinangeli L. Thomas N. POSTER LOCATION #75 Thermal Modeling of Large-Scale Deformational Systems in the South Polar Layered Deposits (Promethei Lingula, Mars): Geologic Constraints [#1899] SPLD in Promethei Lingula (Mars) are locally affected by deformations. We performed thermal analysis to understand their rheology and compositional variations.

Guallini L. Parker T. J. Sutton S. Thomas N. POSTER LOCATION #76 Esker-Like Ring-Shaped Ridges in Peta, Novara, and Two Other Unnamed Craters on Mars: Evidences of Ancient Glaciers? [#1959] Peta, Novara and two other craters in low-latitude regions on Mars show ring-shaped ridges that we interpret to be eskers formed by melting of ancient glaciers.

Rutledge A. M. Scudder N. A. Havig J. R. Horgan B. Rampe E. B. et al. POSTER LOCATION #77 Does Melt-Driven Silica Cycling Dominate Weathering in Glaciated Volcanic Terrains? [#2069] Mobile silica, glaciated mafic rocks: Important for Mars.

Kirchoff M. R. Grimm R. E. POSTER LOCATION #78 Preservation of Tropical Subsurface Ice into the Very Recent History of Mars [#2857] Young formation model ages of single layered ejecta craters indicate current tropical subsurface ice on Mars.

Butcher F. E. G. Gallagher C. Arnold N. S. Balme M. R. Conway S. J. et al. POSTER LOCATION #79 Morphometric Characterisation of Eskers Associated with an Extant Mid-Latitude Glacier on Mars [#1238] Water under Mars / Mid-lat glacier left clues / On recent melting.

Baker D. M. H. Carter L. M. POSTER LOCATION #80 Probing the Near Surface of Glacial Deposits on Mars [#2650] The complete range of crater morphologies on martian glacial deposits are assessed to evaluate the physical properties and structure of supraglacial debris.

Petersen E. I. Holt J. W. Levy J. S. Goudge T. A. POSTER LOCATION #81 New Constraints on Surface Debris Layer Composition for Martian Mid-Latitude Glaciers from SHARAD and HiRISE [#2767] Glacial cake of Mars / Topped up with frosty icing! / May radar see thee?

Manchester A. Byers G. Guerrero M. McGrath S. Nasser A. POSTER LOCATION #82 Examination of Effects of Impact Driven Tectonics on Surface Activity of Asteroids and Icy Worlds [#1586] We hypothesize that large craters correlated with linear features are evidence of impact-driven tectonics observed on both icy asteroids and icy moons.