ALBERT

Description / Table of Contents: Gullies on Mars resemble terrestrial gullies involved in the transport of abundant material down steep slopes by liquid water. However, liquid water should not be stable at the Martian surface. The articles in this volume present the two main opposing theories for Martian gully formation: climate-driven melting of surficial water-ice deposits and seasonal dry-ice sublimation. The evidence presented ranges from remote-sensing observations, to experimental simulations, to comparison with Earth analogues. The opposing hypotheses imply either that Mars has been unusually wet in the last few million years or that it has remained a cold dry desert – both with profound implications for understanding the water budget of Mars and its habitability. The debate questions the limits of remote-sensing data and how we interpret active processes on extra-terrestrial planetary surfaces, even beyond those on Mars, as summarized by the review paper at the beginning of the book.

Description / Table of Contents: Periglacial and paraglacial environments, located outside ice sheet margins but responding to similar climate forcings, are key to identifying climate change effects upon the Earth system. These environments are relicts of cold Earth processes and so are most sensitive to global warming. Changes in the distribution and thickness of permafrost in continental interiors have implications for ecosystem and landscape stability. Periglacial Alpine environments are experiencing increased rockfall and mass movement, leading to rock glacier instability and sediment release to downstream rivers. In turn, these landscape effects impact on natural hazards and human activities in these sensitive and geologically transient environments. Papers in this volume explore some of these interrelated issues in field studies from Europe, North America and Asia. The volume will be of interest to geomorphologists, modellers, environmental managers, planners and engineers working on landscape, climate and environmental change in periglacial and paraglacial areas.

Description / Table of Contents: Martian gullies and their Earth analogues: introduction / Susan J. Conway, Tjalling de Haas, Tanya N. Harrison, Paul A. Carling and Jonathan Carrivick / Geological Society, London, Special Publications, 467, 1-6, 7 December 2018, https://doi.org/10.1144/SP467.15 --- Martian gullies: a comprehensive review of observations, mechanisms and insights from Earth analogues / Susan J. Conway, Tjalling de Haas and Tanya N. Harrison / Geological Society, London, Special Publications, 467, 7-66, 25 October 2018, https://doi.org/10.1144/SP467.14 --- Martian remote sensing --- The formation of gullies on Mars today / Colin M. Dundas, Alfred S. McEwen, Serina Diniega, Candice J. Hansen, Shane Byrne and Jim N. McElwaine / Geological Society, London, Special Publications, 467, 67-94, 27 November 2017, https://doi.org/10.1144/SP467.5 --- Dune-slope activity due to frost and wind throughout the north polar erg, Mars / Serina Diniega, Candice J. Hansen, Amanda Allen, Nathan Grigsby, Zheyu Li, Tyler Perez and Matthew Chojnacki / Geological Society, London, Special Publications, 467, 95-114, 27 November 2017, https://doi.org/10.1144/SP467.6 --- Morphological characterization of landforms produced by springtime seasonal activity on Russell Crater megadune, Mars / Gwenaël Jouannic, Susan J. Conway, Julien Gargani, François Costard, Marion Massé, Olivier Bourgeois, John Carter, Frédéric Schmidt, Chiara Marmo, Gian G. Ori, Marion Nachon and Kelly Pasquon / Geological Society, London, Special Publications, 467, 115-144, 29 October 2018, https://doi.org/10.1144/SP467.16 --- Are different Martian gully morphologies due to different processes on the Kaiser dune field? / Kelly Pasquon, Julien Gargani, Marion Nachon, Susan J. Conway, Marion Massé, Gwenaël Jouannic, Matthew R. Balme, François Costard and Mathieu Vincendon / Geological Society, London, Special Publications, 467, 145-164, 18 July 2018, https://doi.org/10.1144/SP467.13 --- Time will tell: temporal evolution of Martian gullies and palaeoclimatic implications / T. de Haas, S. J. Conway, F. E. G. Butcher, J. Levy, P. M. Grindrod, T. A. Goudge and M. R. Balme / Geological Society, London, Special Publications, 467, 165-186, 27 November 2017, https://doi.org/10.1144/SP467.1 --- New slope-normalized global gully density and orientation maps for Mars / S. J. Conway, T. N. Harrison, R. J. Soare, A. W. Britton and L. J. Steele / Geological Society, London, Special Publications, 467, 187-197, 27 November 2017, https://doi.org/10.1144/SP467.3 --- Thermal inertia variations from gully and mass-wasting activity in Gasa crater, Mars / Tanya N. Harrison, Livio L. Tornabene, Gordon R. Osinski and Susan J. Conway / Geological Society, London, Special Publications, 467, 199-210, 4 December 2017, https://doi.org/10.1144/SP467.8 --- Periglacial complexes and the deductive evidence of ‘wet’-flows at the Hale impact crater, Mars / R. J. Soare, S. J. Conway, C. Gallagher, J. M. Dohm and D. Reiss / Geological Society, London, Special Publications, 467, 211-231, 6 March 2018, https://doi.org/10.1144/SP467.7 --- Geomorphological analysis of gullies on the central peak of Lyot Crater, Mars / Virginia C. Gulick, Natalie Glines, Shawn Hart and Patrick Freeman / Geological Society, London, Special Publications, 467, 233-265, 5 December 2018, https://doi.org/10.1144/SP467.17 --- Earth analogues --- Debris flows and water tracks in northern Victoria Land, continental East Antarctica: a new terrestrial analogue site for gullies and recurrent slope lineae on Mars / E. Hauber, C. Sassenroth, J.-P. de Vera, N. Schmitz, R. Jaumann, D. Reiss, H. Hiesinger and A. Johnsson / Geological Society, London, Special Publications, 467, 267-287, 3 April 2018, https://doi.org/10.1144/SP467.12 --- Gully formation in the McMurdo Dry Valleys, Antarctica: multiple sources of water, temporal sequence and relative importance in gully erosion and deposition processes / James L. Dickson, James W. Head, Joseph S. Levy, Gareth A. Morgan and David R. Marchant / Geological Society, London, Special Publications, 467, 289-314, 4 December 2017, https://doi.org/10.1144/SP467.4 --- Gullies and debris-flows in Ladakh Himalaya, India: a potential Martian analogue / Rishitosh K. Sinha, S. Vijayan, Anil D. Shukla, Priyabrata Das and Falguni Bhattacharya / Geological Society, London, Special Publications, 467, 315-342, 7 February 2018, https://doi.org/10.1144/SP467.9 --- Laboratory simulations --- CO2 sublimation in Martian gullies: laboratory experiments at varied slope angle and regolith grain sizes / Matthew E. Sylvest, John C. Dixon, Susan J. Conway, Manish R. Patel, Jim N. McElwaine, Axel Hagermann and Adam Barnes / Geological Society, London, Special Publications, 467, 343-371, 26 February 2018, https://doi.org/10.1144/SP467.11 --- Downslope sediment transport by boiling liquid water under Mars-like conditions: experiments and potential implications for Martian gullies / Clémence Herny, Susan J. Conway, Jan Raack, Sabrina Carpy, Tanguy Colleu-Banse and Manish R. Patel / Geological Society, London, Special Publications, 467, 373-410, 6 February 2018, https://doi.org/10.1144/SP467.10 --- An experimental investigation into Martian gully formation: a slush-flow model / Katherine S. Auld and John C. Dixon / Geological Society, London, Special Publications, 467, 411-424, 27 November 2017, https://doi.org/10.1144/SP467.2