Gravel‐bed river evolution in earthquake‐prone regions subject to cycled hydrographs and repeated sediment pulses

机译：地震 - 易发地区的砾石床河流进化，受循环的水文，反复沉积脉冲

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Abstract >Sediment often enters rivers in the form of sediment pulses associated with landslides and debris flows. This is particularly so in gravel‐bed rivers in earthquake‐prone mountain regions, such as Southwest China. Under such circumstances, sediment pulses can rapidly change river topography and leave the river in repeated states of gradual recovery. In this paper, we implement a one‐dimensional morphodynamic model of river response to pulsed sediment supply. The model is validated using data from flume experiments, so demonstrating that it can successfully reproduce the overall morphodynamics of experimental pulses. The model is then used to explore the evolution of a gravel‐bed river subject to cycled hydrographs and repeated sediment pulses. These pulses are fed into the channel in a fixed region centered at a point halfway down the calculational domain. The pulsed sediment supply is in addition to a constant sediment supply at the upstream end. Results indicate that the river can reach a mobile‐bed equilibrium in which two regions exist within which bed elevation and surface grain size distribution vary periodically in time. One of these is at the upstream end, where a periodic discharge hydrograph and constant sediment supply are imposed, and the other is in a region about halfway down the channel where periodic sediment pulses are introduced. Outside these two regions, bed elevation and surface grain size distribution reach a mobile‐bed equilibrium that is invariant in time. The zone of fluctuation‐free mobile‐bed equilibrium upstream of the pulse region is not affected by repeated sediment pulses under the scenarios tested, but downstream of the pulse region, the channel reaches different fluctuation‐free mobile‐bed equilibriums under different sediment pulse scenarios. The vertical bed structure predicted by the simulations indicates that the cyclic variation associated with the hydrograph and sediment pulses can affect the substrate stratigraphy to some depth. Copyright ? 2017 John Wiley & Sons, Ltd. </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 XMLNS =“http://www.wiley.com/namespaces/wiley”type =“main”xml：lang =“en”> <title type =“main”> abstract </ title> >沉积物经常进入与山体滑坡和碎片流动相关的沉积物脉冲形式的河流。这尤其如此在地震 - 俯卧的山地地区的砾石河河中，例如西南地区。在这种情况下，沉积物脉冲可以迅速改变河流，并在反复逐步恢复中离开河流。本文实施了河流沉积物供应的一维形态学模型。使用来自水槽实验的数据验证该模型，因此证明它可以成功地再现实验脉冲的整体形态学性。然后，该模型用于探讨砾石床河的演变，受循环的水文照片和重复的沉积物脉冲。将这些脉冲送入到在计算域中的半个点以一半的位置为中心的固定区域中。脉冲沉积物供应除了上游端的恒定沉积物。结果表明，该河流可以达到移动床平衡，其中存在两个地区，在该地区内，床高度和表面粒度分布在时间周期周期。其中一个位于上游端，其中施加了周期性排放的水文图像和恒定的沉积物供应，另一个是在引入周期性沉积脉冲的通道的一半区域中。在这两个地区外，床海拔和表面粒度分布达到了不变的移动床平衡。在脉冲区域的上游上游的无波动移动床平衡区域不受反复沉积物脉冲的影响，但在脉冲区域的下游，在不同的沉积物脉冲场景下，通道达到不同的无波动移动床平衡。通过模拟预测的垂直床结构表明与水力照片和沉积物脉冲相关的循环变化可以影响衬底地层到一些深度。版权？ 2017年John Wiley＆amp; SONS，LTD。</ p> </ abstract> </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-22319/'>《Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group》</a> <b style="margin: 0 2px;">|</b><span>2017年第14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=An Chenge&option=202" target="_blank" rel="nofollow">An Chenge;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Cui Yantao&option=202" target="_blank" rel="nofollow">Cui Yantao;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Fu Xudong&option=202" target="_blank" rel="nofollow">Fu Xudong;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Parker Gary&option=202" target="_blank" rel="nofollow">Parker Gary;</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>State Key Laboratory of Hydroscience and EngineeringTsinghua UniversityBeijing China;</p> <p>Stillwater SciencesBerkeley CA USA;</p> <p>State Key Laboratory of Hydroscience and EngineeringTsinghua UniversityBeijing China;</p> <p>Department of Civil and Environmental Engineering and Department of Geology Hydrosystems LaboratoryUniversity of Illinois Urbana‐ChampaignIL USA;</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=gravel rivers&option=203" rel="nofollow">gravel rivers;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=mountains&option=203" rel="nofollow">mountains;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=earthquakes&option=203" rel="nofollow">earthquakes;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=sediment pulse&option=203" rel="nofollow">sediment pulse;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=boundary layer&option=203" rel="nofollow">boundary layer;</a> </p> <div class="translation"> 机译：砾石河;山;地震;沉积物脉冲;边界层; 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href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=刘芳&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,刘芳</a> <span> <a href="/journal-cn-10090/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 交通与运输 </a> </span> <span> . 2019</span><span>,第005期</span> </span> </div> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/academic-journal-cn_chinese-journal-nature_thesis/020121195476.html">汶川地震对龙门山地区平通河河流系统沉积物输移的影响</a> <b>[J]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=颜照坤&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 颜照坤</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=李勇&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,李勇</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=黄润秋&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,黄润秋</a> <span> <a href="/journal-cn-5253/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 自然杂志 </a> </span> <span> . 2011</span><span>,第006期</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06130471986221.html">DEVICE OF RAPIDLY AND EASILY MOVING LARGE AMOUNT OF SEDIMENT GRAVEL ACCUMULATED AT DRY RIVER-BED AND RIVER-MOUTH BY MEANS OF WATER INJECTION FORCE FROM WATER SURFACE</a> <b>[P]</b> . <span> 外国专利：  JPS6172133A </span> <span> . 1986-04-14</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：通过水面注水力在干河床和河口累积的大量泥沙砾快速而便捷地移动的装置 </span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06130448208368.html">Production of glass or glass-ceramic plates used as cooking surfaces comprises subjecting the plates to specified microwave radiation so that surface regions prone to breakage are subjected to lower temperature than remaining surface region</a> <b>[P]</b> . <span> 外国专利：  DE19948655C1 </span> <span> . 2001-07-05</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：生产用作烹饪表面的玻璃或玻璃陶瓷板的步骤包括：使板经受特定的微波辐射，以使易于破裂的表面区域的温度低于其余表面区域的温度。 </span> </p> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130498244745.html">House light and elastic to the regions subject to earthquakes</a> <b>[P]</b> . <span> 外国专利：  FR401096A </span> <span> . 1909-08-18</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：房屋轻而有弹性，易受地震影响 </span> </p> </li> </ul> </div> </div> </div> <div class="theme cardcommon" style="overflow: auto;display:none"> <h3 class="all_title" id="enpatent55">相关主题</h3> 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