Recent increase of river–floodplain suspended sediment exchange in a reach of the lower Amazon River

Rudorff Conrado M.; Dunne Thomas; Melack John M.

摘要

Abstract > We analyzed variation of channel–floodplain suspended sediment exchange along a 140?km reach of the lower Amazon River for two decades (1995–2014). Daily sediment fluxes were determined by combining measured and estimated surface sediment concentrations with river–floodplain water exchanges computed with a two‐dimensional hydraulic model. The average annual inflow to the floodplain was 4088?±?2017 Gg yr ?1 and the outflow was 2251?±?471 Gg yr ?1 , respectively. Prediction of average sediment accretion rate was twice the estimate from a previous study of this same reach and more than an order of magnitude lower than an estimate from an earlier regional scale study. The amount of water routed through the floodplain, which is sensitive to levee topography and increases exponentially with river discharge, was the main factor controlling the variation in total annual sediment inflow. Besides floodplain routing, the total annual sediment export depended on the increase in sediment concentration in lakes during floodplain drainage. The recent increasing amplitude of the Amazon River annual flood over two decades has caused a substantial shift in water and sediment river–floodplain exchanges. In the second decade (2005–2014), as the frequency of extreme floods increased, annual sediment inflow increased by 81% and net storage increased by 317% in relation to the previous decade (1995–2004). 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”>抽象</ title> >我们分析了渠道 - 洪泛区的变异暂停沉积物交换沿着140 km到达下亚马逊河的140公里到达二十年（1995 - 2014年）。通过将测量的和估计的表面沉积物浓度与具有二维液压模型计算的河流 - 泛洪水水交换相结合来确定每日沉积物助熔剂。洪泛区的平均流入量为4088？±2017 gg Yr ？1 </ sup>，流出分别为2251？±471 gg Yr 1 </ sup>。预测平均沉积物增生率是从先前研究同样达到的研究和比早期区域规模研究的估计的估计的估计量是两倍。通过洪泛区排出的水量，这对堤防地形敏感并随着河流放电逐一增加，是控制总年度沉积物流入的变化的主要因素。除了洪泛区路由，总年度沉积物出口依赖于洪泛区排水期间湖泊沉积物浓度的增加。最近两十年来亚马逊河洪水幅度的幅度幅度幅度越来越大，在水和沉积物河洪水平台交流中造成了大幅转变。在第二十年（2005-2014）中，随着极端洪水的频率增加，年度沉积物流入增加了81％，净储存与前一十年（1995-2004）相关317％。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>2018年第1期</span><b style="margin: 0 2px;">|</b><span>共11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=Rudorff Conrado M.&option=202" target="_blank" rel="nofollow">Rudorff Conrado M.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Dunne Thomas&option=202" target="_blank" rel="nofollow">Dunne Thomas;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Melack John M.&option=202" target="_blank" rel="nofollow">Melack John M.;</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>National Center for Monitoring and Early Warning of Natural DisastersS?o José dos Campos S?o Paulo Brazil;</p> <p>Earth Research InstituteUniversity of CaliforniaSanta Barbara CA USA;</p> <p>Earth Research InstituteUniversity of CaliforniaSanta Barbara CA 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=Amazon floodplain&option=203" rel="nofollow">Amazon floodplain;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=two‐dimensional hydraulic modeling&option=203" rel="nofollow">two‐dimensional hydraulic modeling;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=river–floodplain exchange&option=203" rel="nofollow">river–floodplain exchange;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=suspended sediment&option=203" rel="nofollow">suspended sediment;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=overbank sedimentation&option=203" rel="nofollow">overbank sedimentation;</a> </p> <div class="translation"> 机译：亚马逊洪泛区;二维液压建模;河洪水交换;悬浮沉积物;过银沉降; </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/0704023139171.html">Recent increase of river–floodplain suspended sediment exchange in a reach of the lower Amazon River</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Rudorff Conrado M.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Rudorff Conrado M.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Dunne Thomas&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Dunne Thomas,</a> <a 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href="/journal-cn-56690/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 环境科学 </a> </span> <span> . 2003</span><span>,第5期</span> </span> </div> </li> <li> <div> <b>6. </b><a class="enjiyixqcontent" href="/academic-conference-cn_meeting-33033_thesis/02022734022.html">鄱阳湖洪水、沉积量和人类活动关系探讨---据沉积物核素部面分析</a> <b>[C]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=项亮&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 项亮</a> <span> <a href="/conference-cn-33033/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 全国火力发电技术学术年会 </a> <span> <span> . 1999</span> </span> </div> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/academic-degree-domestic_mphd_thesis/02031373215.html">青藏高原北部那陵格勒河流域现代洪水过程和古洪水沉积物光释光年代学及粒度特征</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=杨晓云&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 杨晓云</a> <span> . 2015</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06120110290487.html">利用高含沙洪水的沉积物固定流动沙丘的方法</a> <b>[P]</b> . <span> 中国专利： CN107816031A </span> <span> . 2018-03-20</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06120114052602.html">臭氧微纳米气泡-超声波原位修复河流沉积物多环芳烃污染的方法及系统</a> <b>[P]</b> . <span> 中国专利： CN114133020A </span> <span> . 2022-03-04</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130442189297.html">Technology for the prevention of river flooding with particular application to the case of a proposal for the suspended lower course of the Yellow River</a> <b>[P]</b> . <span> 外国专利：  AU2003212018A1 </span> <span> . 2004-01-29</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> 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initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：河水蓄水设施，河水向水蓄水设施的水流量的流量控制方法，河水对水蓄积设施的沉积物沉降方法 </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> <ul id="subject"> </ul> </div> </div> </div> </div> <div class="right rightcon"> <div class="details_img cardcommon clearfix" style="margin-bottom: 10px;display:none;" > </div> </div> </div> <div id="thesis_get_original1" class="downloadBth" style="bottom: 19px;z-index: 999;" onclick="ywcd('0704023139171','4',7,2,1,'',this,24)" class="delivery" prompt="010401" title="通过人工服务将文献原文发送至邮箱" >获取原文</div> <div class="journalsub-pop-up" style="display: none"> <div class="journal-sub"> <h2>期刊订阅</h2> <img src="https://cdn.zhangqiaokeyan.com/img/loginclose.png" alt="关闭" onclick="$('.journalsub-pop-up').hide()"> <p class="pardon">抱歉，该期刊暂不可订阅，敬请期待！</p> <p 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