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19:08:03, 12 July 2021 +
This material was enabled and encouraged by the contributors' participation in the Earth Surface Processes Institute (ESPIn) 2021. +
Jupyter Notebook +
1.5 hrs +
Although we understand the process of crat … Although we understand the process of cratering reasonably well we have a limited understanding about how cratering and the cratered surface influences the role of other longer-term surface processes. For example, on heavily cratered surfaces of the Moon, Mars, and Mercury, which have not been altered by plate tectonics like on Earth, how do the craters affect the flow and collection of water? Of wind? And of the sediments transported by both water and wind? These are fundamental questions in our understanding of planetary bodies and their potential habitability. </br></br>This lab introduces what we know about impact cratering, some of the principles we use to simulate a cratered surface (after Howard, 2007), and allows students to explore the effects of stream-power erosion and diffusive erosion on a cratered landscape. Throughout this lab, quantities relevant to Mars are used, but impact cratering is a universal process across our solar system and the models could just as easily be applied to any cratered surface, while the surface processes could be modified to reflect the relevant processes on that planetary body.relevant processes on that planetary body. +
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ESPIn-2021 Presentation LessonVersion.pptx +
University of Texas at Austin +
July 12, 2021 +
Impact craters are important aspects of th … Impact craters are important aspects of the landscape on most rocky planetary bodies. The attached presentation introduces the importance of considering impact cratering and the basic formation and resulting morphology of a crater. The associated lab introduces the fundamental concepts of impact cratering distribution and morphology, and how we can recreate the observed distribution and morphology in models, after ideas published by Howard (2007). After investigating impact cratering itself, this lab moves on to explore the roles of diffusion and advection in modifying the cratered surface, using Landlab model components to explore the evolution of cratered landscapes over time.volution of cratered landscapes over time. +
Learn about the nature of impact craters and how we simulate their shape and distribution on a planetary surface. Then, investigate the results of different kinds of erosion on a cratered landscape, using Landlab. +
Landlab +
<p>This lab would work best with an … <p>This lab would work best with an introduction to cratering as a geomorphic process, and the importance of cratering as an age constraint for planetary surfaces. There is enough information that students with limited coding experience could read and run the notebook independently, as there is only one input for an initial number of craters. Students experienced with coding will be able to change parameters and explore the effects. There are several short, open-ended questions scattered throughout that could be used as a problem set or points of discussion.</p></br></br><p>This lab can be run on the <em>lab</em> (for educators) and <em>jupyter</em> (for general use) instances of the OpenEarthscape JupyterHub: just click one of the links under the <strong>Run online using</strong> heading at the top of this page, then run the notebook in the "CSDMS" kernel.</p></br></br><p>If you don't already have a JupyterHub account, follow the instructions to sign up at https://csdms.colorado.edu/wiki/JupyterHub. If you're an educator, you can get JupyterHub accounts for students--please contact us through the CSDMS Help Desk: https://csdms.github.io/help-desk.</p>accounts for students--please contact us through the CSDMS Help Desk: https://csdms.github.io/help-desk.</p> +
This lab requires the Python packages ''numpy'', ''matplotlib'', ''landlab'' and ''random'', which must be installed if run locally. On the CSDMS JupyterHub no installation is required. +
Image:Crater.jpg +
Howard, A. D. (2007). Simulating the development of Martian highland landscapes through the interaction of impact cratering, fluvial erosion, and variable hydrologic forcing. Geomorphology, 91(3–4), 332–363. https://doi.org/10.1016/j.geomorph.2007.04.017. + and Campforts, B., Overeem, I., Gasparini, N.M., Piper, M., and Arthurs, L., 2021: Modeling earth surface processes for the future: ESPIn, a summer school focusing on cyber training and professional networking, 2021 AGU Fall Meeting, New Orleans, LA. +
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21:58:17, 19 April 2022 +
