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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Spatial and temporal replicability of meteoric and in situin situ 1010 Be concentrations in fluvial sediment
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Spatial and temporal replicability of meteoric and in situin situ 1010 Be concentrations in fluvial sediment

机译：陨石的空间和时间复制和原位原位 10 10是氟沉积物中的浓度

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Abstract >Cosmogenic isotopes, short‐lived radionuclides, elemental concentrations and thermochronometric indicators are measured in river sand to quantify erosion rates and trace sediment sources, and/or infer erosional processes. Interpretations of detrital sediment analyses are often based on the rarely tested assumption of time‐invariant tracer concentration. A better understanding of when and where this assumption breaks down and what sampling strategies minimize temporal and small‐scale spatial variance will improve science done using detrital river sediment. > Here, we present new and previously published spatial and temporal replicates measured for <fi>in situ</fi> and meteoric 10 Be ( 10 Be <sub>i</sub> and 10 Be <sub>m</sub> , respectively). Our new data include 113 replicate pairs, taken from agricultural and/or tectonically active watersheds in China months to millennia apart and spatial replicates taken up to 2 km apart on the same day. The mean percentage difference is 10% (?122% to 150%) for both systems considered together; the mode is close to 0% for both systems; and 36% of pairs of samples replicate within our analytical accuracy at 2 <fi>σ</fi> . We find that 10 Be <sub>i</sub> replicates better than 10 Be <sub>m</sub> ( <fi>p</fi> 0.01). 10 Be <sub>i</sub> replicability is worse in steeper basins, suggesting that stochastic processes (i.e. landslides) affect reproducibility. 10 Be <sub>m</sub> replicability is worse in larger basins, </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> >宇宙原性同位素在河砂中测量了短寿命的放射性核素，元素浓度和热成像指示剂，以量化侵蚀率和痕量沉积物来源和/或推断侵蚀过程。滴乳沉积物分析的解释通常基于时间不变的示踪浓度的很少测试的假设。更好地了解这一假设的何时以及在何处崩溃以及最小化时间和小规模空间方差的采样策略将改善使用碎屑河沉积物的科学。</ p> >在这里，我们提出了新的和以前发表的空间和时间以原位</ fi>和陨石的复制测量为</ fi>和陨石> 10 </ sup>是（ 10 </ sup> be <sub> i </ sub>和 10 </ sup>分别<sub> m </ sub>）。我们的新数据包括113对，从中国几个月到千禧年的农业和/或构造活跃流域，在同一天占据了千年和空间复制。在一起考虑的两个系统，平均百分比差异为10％（？122％至150％）;两个系统的模式接近0％;和36％的样品对在2 <fi>σ</ fi>的分析精度内复制。我们发现 10 </ sup>是<sub> i </ sub>更好地优于 10 </ sup>是<sub> m </ sub>（<fi> p </ fi>＆lt ; 0.01）。 10 </ sup>是<sub> i </ sub>可重量性在陡峭的盆地中更差，表明随机过程（山体滑坡）影响重现性。 10 </ sup>是<sub> m </ sub>更大的盆地更差， </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15期</span><b style="margin: 0 2px;">|</b><span>共15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=Sosa Gonzalez Veronica&option=202" target="_blank" rel="nofollow">Sosa Gonzalez Veronica;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Schmidt Amanda H.&option=202" target="_blank" rel="nofollow">Schmidt Amanda H.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Bierman Paul R.&option=202" target="_blank" rel="nofollow">Bierman Paul R.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Rood Dylan H.&option=202" target="_blank" rel="nofollow">Rood Dylan H.;</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>Geology Department and Rubenstein School of the Environment and Natural ResourcesUniversity of VermontBurlington VT USA;</p> <p>Geology DepartmentOberlin CollegeOberlin OH USA;</p> <p>Geology Department and Rubenstein School of the Environment and Natural ResourcesUniversity of VermontBurlington VT USA;</p> <p>Department of Earth Science and EngineeringImperial College LondonLondon UK;</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=temporal replicates&option=203" rel="nofollow">temporal replicates;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=spatial replicates&option=203" rel="nofollow">spatial replicates;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=cosmogenic&option=203" rel="nofollow">cosmogenic;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=variability&option=203" rel="nofollow">variability;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=detrital sediment&option=203" rel="nofollow">detrital sediment;</a> </p> <div class="translation"> 机译：颞复制;空间复制;宇宙中的;变异性;扭曲沉积物; </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> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704023139149.html">Spatial 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