Morphological Expressions of Crater Infill Collapse: Model Simulations of Chaotic Terrains on Mars

Roda Manuel; Marketos George; Westerweel Jan; Govers Rob

摘要

Abstract >Martian chaotic terrains are characterized by deeply depressed intensively fractured areas that contain a large number of low‐strain tilted blocks. Stronger deformation (e.g., higher number of fractures) is generally observed in the rims when compared to the middle regions of the terrains. The distribution and number of fractures and tilted blocks are correlated with the size of the chaotic terrains. Smaller chaotic terrains are characterized by few fractures between undeformed blocks. Larger terrains show an elevated number of fractures uniformly distributed with single blocks. We investigate whether this surface morphology may be a consequence of the collapse of the infill of a crater. We perform numerical simulations with the Discrete Element Method and we evaluate the distribution of fractures within the crater and the influence of the crater size, infill thickness, and collapsing depth on the final morphology. The comparison between model predictions and the morphology of the Martian chaotic terrains shows strong statistical similarities in terms of both number of fractures and correlation between fractures and crater diameters. No or very weak correlation is observed between fractures and the infill thickness or collapsing depth. The strong correspondence between model results and observations suggests that the collapse of an infill layer within a crater is a viable mechanism for the peculiar morphology of the Martian chaotic terrains. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“main”> <标题类型=“main”>抽象</ title> >火星混沌地形的特点是深入凹陷的强烈断裂区域，含有大量的低应变倾斜块。与地球的中间区域相比，通常在轮辋中观察到更强的变形（例如，较高的裂缝）。裂缝和倾斜块的分布和数量与混沌地形的大小相关。较小的混沌地形的特征在于未变形块之间的裂缝很少。较大的地形显示均匀分布单块的骨折升高。我们调查这种表面形态是否可能是火山口填充的结果。我们使用离散元素进行数值模拟，我们评估了火山口内部骨折的分布以及火山口尺寸，填充厚度和塌陷深度对最终形态的影响。模型预测与火星混沌地形的形态的比较表现出强烈的统计相似性，骨折和裂缝与火山口直径之间的相关性。在裂缝和填充厚度或塌陷深度之间观察到没有或非常弱的相关性。模型结果与观察之间的强烈对应表明，火山口内填充层的崩溃是火星混沌地形的特殊形态的可行机制。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-23285/'>《Geochemistry, geophysics, geosystems》</a> <b style="margin: 0 2px;">|</b><span>2017年第10期</span><b style="margin: 0 2px;">|</b><span>共13页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Roda Manuel&option=202" target="_blank" rel="nofollow">Roda Manuel;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Marketos George&option=202" target="_blank" rel="nofollow">Marketos George;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Westerweel Jan&option=202" target="_blank" rel="nofollow">Westerweel Jan;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Govers Rob&option=202" target="_blank" rel="nofollow">Govers Rob;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Dipartimento di Scienze della TerraUniversita' degli Studi di MilanoMilano Italy;</p> <p>Faculty of GeosciencesUniversiteit UtrechtUtrecht The Netherlands;</p> <p>Faculty of GeosciencesUniversiteit UtrechtUtrecht The Netherlands;</p> <p>Faculty of GeosciencesUniversiteit UtrechtUtrecht The Netherlands;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=chaotic terrains&option=203" rel="nofollow">chaotic terrains;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=collapse&option=203" rel="nofollow">collapse;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=fractures&option=203" rel="nofollow">fractures;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mars&option=203" rel="nofollow">Mars;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=subice lake&option=203" rel="nofollow">subice lake;</a> </p> <div class="translation"> 机译：混乱的地形;崩溃;骨折;火星;子湖; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704023360564.html">Morphological Expressions of Crater Infill Collapse: Model Simulations of Chaotic Terrains on Mars</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Roda Manuel&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Roda Manuel,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Marketos George&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Marketos George,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Westerweel Jan&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Westerweel Jan,</a> <a href="/journal-foreign-23285/" target="_blank" rel="nofollow" class="tuijian_authcolor">Geochemistry, geophysics, geosystems .</a> <span>2017</span><span>,第10期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：火山口填充的形态学表达：火星上混沌地形模型模拟</span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/academic-journal-foreign_simulation_thesis/0204111376596.html">Real Time Physically-Based Modeling and Simulation of Cratering and Fragmentation of Terrain</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Nabil Rami&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Nabil Rami,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Michael D. 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