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A Transfer Function Between Line‐of‐Sight Gravity Difference and GRACE Intersatellite Ranging Data and an Application to Hydrological Surface Mass Variation

机译：视线重力差和Grace Intersatellite测距数据的传递函数和水文表面质量变化的应用

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Abstract > We develop a transfer function to determine in situ line‐of‐sight gravity difference (LGD) directly from Gravity Recovery and Climate Experiment (GRACE) range‐acceleration measurements. We first reduce GRACE data to form residual range‐acceleration referenced to dynamic orbit computed with a reference gravity field and nonconservative force data. Thus, the residuals and the corresponding LGD data reflect time‐variable gravity signals. A transfer function is designed based on correlation‐admittance spectral analysis. The correlation spectrum shows that residual range‐acceleration and LGD are near‐perfectly correlated for frequencies 5?cycles‐per‐revolution. The admittance spectrum quantifies that the LGD response to range‐acceleration is systematically larger at lower frequencies, due to the increased contribution of centrifugal acceleration. We find that the correlation and admittance spectra are stationary (i.e., are independent of time, satellite altitude, and gravity strength) and, therefore, can be determined a priori with high fidelity. We determine the spectral transfer function and the equivalent time domain filter. Using both synthetic and actual GRACE data, we demonstrate that in situ LGD can be estimated via the transfer function with an estimation error of 0.15?nm/s 2 , whereas the actual GRACE data error is around 1.0?nm/s 2 . We present an application of LGD data to surface water storage changes in large basins such as Amazon, Congo, Parana, and Mississippi by processing 11?years of GRACE data. Runoff routing models are calibrated directly using LGD data. Our technique demonstrates a new way of using GRACE data by forward modeling of various geophysical models and in‐orbit comparison with such GRACE in situ data. </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”XML：Lang =“en”> <标题类型=“main”>抽象</ title> >我们开发传送功能以确定原位视线重力差（LGD）直接从重力恢复和气候实验（Grace）范围 - 加速度测量。我们首先减少恩典数据以形成具有参考重力场和非可操作力数据计算的动态轨道的残余范围加速度。因此，残差和相应的LGD数据反射时间可变重力信号。基于相关促进光谱分析设计传递函数。相关谱表明，剩余范围 - 加速度和LGD与频率近乎完全相关，频率和GT;每次旋转循环。由于离心加速度的贡献增加，预防光谱量化了对范围加速的LGD对范围加速度的响应。我们发现相关性和导纳光谱是静止的（即，与时间，卫星高度和重力强度无关），因此可以通过高保真度确定先验。我们确定光谱传输函数和等效时间域过滤器。使用综合性和实际恩典数据，我们证明了原位LGD可以通过传递函数估计，估计误差为0.15？nm / s 2 </ sup>，而实际的恩奇数据错误约为1.0？ nm / s 2 </ sup>。我们向LGD数据应用LGD数据在大型盆地中的地表储水变化，如亚马逊，刚果，帕兰日和密西西比，通过加工11？多年的恩典数据。径流路由模型使用LGD数据直接校准。我们的技术展示了一种新的恩典数据通过转发各种地球物理模型和轨道与原位数据的恩典的轨道比较。 </ 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-34677/'>《Journal of geophysical research. Solid earth: JGR》</a> <b style="margin: 0 2px;">|</b><span>2018年第10期</span><b style="margin: 0 2px;">|</b><span>共16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=Ghobadi‐Far Khosro&option=202" target="_blank" rel="nofollow">Ghobadi‐Far Khosro;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Han Shin‐Chan&option=202" target="_blank" rel="nofollow">Han Shin‐Chan;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Weller Steven&option=202" target="_blank" rel="nofollow">Weller Steven;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Loomis Bryant D.&option=202" target="_blank" rel="nofollow">Loomis Bryant D.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Luthcke Scott B.&option=202" target="_blank" rel="nofollow">Luthcke Scott B.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mayer‐Gürr Torsten&option=202" target="_blank" rel="nofollow">Mayer‐Gürr Torsten;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Behzadpour Saniya&option=202" target="_blank" rel="nofollow">Behzadpour Saniya;</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>School of EngineeringUniversity of NewcastleCallaghan New South Wales Australia;</p> <p>School of EngineeringUniversity of NewcastleCallaghan New South Wales Australia;</p> <p>School of Electrical Engineering and ComputingUniversity of NewcastleCallaghan New South Wales Australia;</p> <p>Geodesy and Geophysics LaboratoryNASA Goddard Space Flight CenterGreenbelt MD USA;</p> <p>Geodesy and Geophysics LaboratoryNASA Goddard Space Flight CenterGreenbelt MD USA;</p> <p>Institute of GeodesyGraz University of TechnologyGraz Austria;</p> <p>Institute of GeodesyGraz University of TechnologyGraz Austria;</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=GRACE&option=203" rel="nofollow">GRACE;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=time‐variable gravity&option=203" rel="nofollow">time‐variable gravity;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=correlation&option=203" rel="nofollow">correlation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=admittance&option=203" rel="nofollow">admittance;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=range‐acceleration&option=203" rel="nofollow">range‐acceleration;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=surface water&option=203" rel="nofollow">surface water;</a> </p> <div class="translation"> 机译：恩典;时间变量重力;相关性;入场;范围 - 加速;地表水; </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/0704025591268.html">A Transfer Function Between Line‐of‐Sight Gravity Difference and GRACE Intersatellite Ranging Data and an Application to Hydrological Surface Mass Variation</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ghobadi‐Far Khosro&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Ghobadi‐Far Khosro,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Han Shin‐Chan&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Han Shin‐Chan,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Weller Steven&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Weller Steven,</a> <a href="/journal-foreign-34677/" target="_blank" rel="nofollow" class="tuijian_authcolor">Journal of geophysical research. 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