First Observation of the Earth's Permanent Free Oscillations on Ocean Bottom Seismometers

Deen M.; Wielandt E.; Stutzmann E.; Crawford W.; Barruol G.; Sigloch K.

摘要

Abstract >The Earth's hum is the permanent free oscillations of the Earth recorded in the absence of earthquakes, at periods above 30?s. We present the first observations of its fundamental spheroidal eigenmodes on broadband ocean bottom seismometers (OBSs) in the Indian Ocean. At the ocean bottom, the effects of ocean infragravity waves (compliance) and seafloor currents (tilt) overshadow the hum. In our experiment, data are also affected by electronic glitches. We remove these signals from the seismic trace by subtracting average glitch signals; performing a linear regression; and using frequency‐dependent response functions between pressure, horizontal, and vertical seismic components. This reduces the long period noise on the OBS to the level of a good land station. Finally, by windowing the autocorrelation to include only the direct arrival, the first and second orbits around the Earth, and by calculating its Fourier transform, we clearly observe the eigenmodes at the ocean bottom. </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”> Abstract </ title> >地球的嗡嗡声是在没有地震的情况下记录的地球的永久性摆动振荡。超过30？s的期间。我们在印度洋宽带海洋底部地震仪（Obss）上的第一次观察到其基本球形特征。在海底，海洋Intrabravity波（合规）和海底电流（倾斜）的影响蒙上嗡嗡声。在我们的实验中，数据也受电子毛刺的影响。通过减去平均毛刺信号，从地震轨迹中取出这些信号;执行线性回归;并使用压力，水平和垂直地震部件之间的频率依赖性响应函数。这减少了OBS对良好陆地站水平的长期噪声。最后，通过追求自相关来仅包括地球周围的直接到达，第一和第二轨道，以及通过计算其傅立叶变换，我们清楚地观察海底的特征模。</ 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-23539/'>《Geophysical Research Letters》</a> <b style="margin: 0 2px;">|</b><span>2017年第21期</span><b style="margin: 0 2px;">|</b><span>共9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=Deen M.&option=202" target="_blank" rel="nofollow">Deen M.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wielandt E.&option=202" target="_blank" rel="nofollow">Wielandt E.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Stutzmann E.&option=202" target="_blank" rel="nofollow">Stutzmann E.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Crawford W.&option=202" target="_blank" rel="nofollow">Crawford W.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Barruol G.&option=202" target="_blank" rel="nofollow">Barruol G.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Sigloch K.&option=202" target="_blank" rel="nofollow">Sigloch K.;</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>Institut de Physique du Globe de ParisSorbonne Paris CiteParis France;</p> <p>Institute of GeophysicsUniversity of StuttgartStuttgart Germany;</p> <p>Institut de Physique du Globe de ParisSorbonne Paris CiteParis France;</p> <p>Institut de Physique du Globe de ParisSorbonne Paris CiteParis France;</p> <p>Institut de Physique du Globe de ParisSorbonne Paris CiteParis France;</p> <p>Department of Earth SciencesUniversity of OxfordOxford 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=hum&option=203" rel="nofollow">hum;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=noise&option=203" rel="nofollow">noise;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=continuous oscillations&option=203" rel="nofollow">continuous oscillations;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=broadband ocean bottom seismology&option=203" rel="nofollow">broadband ocean bottom seismology;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=surface waves&option=203" rel="nofollow">surface waves;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=glitch&option=203" rel="nofollow">glitch;</a> </p> <div class="translation"> 机译：嗡嗡声;噪音;连续振荡;宽带海洋底震学;表面波;故障; </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/0704019849591.html">First 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class="enjiyixqcontent" href="/academic-conference-cn_meeting-4371_thesis/020221047695.html">全球尺度地球内部横向非均匀结构研究中的地球自由振荡保结构数值模拟</a> <b>[C]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=陈世仲&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 陈世仲</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=李小凡&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,李小凡</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=汪文帅&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,汪文帅</a> <span> <a href="/conference-cn-4371/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 中国地球物理学会第二十九届年会 </a> <span> <span> . 2013</span> </span> </div> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/academic-degree-domestic_mphd_thesis/02031634065.html">面波和地球自由振荡的本征模理论</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=吴勃&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 吴勃</a> <span> . 2016</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/061203032186.html">一种数字地球上的全球海洋效果模拟方法</a> <b>[P]</b> . <span> 中国专利： CN105894563B </span> <span> . 2018.09.18</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06120108367715.html">一种数字地球上的全球海洋效果模拟方法</a> <b>[P]</b> . <span> 中国专利： CN105894563A </span> <span> . 2016-08-24</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130423855865.html">The seismometer and the seismometer system for falling perpendicularly die earthquake, being the seismometer for die earthquake directly under falling perpendicularly die earthquake site shaking</a> <b>[P]</b> . <span> 外国专利：  JP4980645B2 </span> <span> . 2012-07-18</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：垂直坠落地震仪和地震仪系统，是垂直坠落地震现场下的直接地震仪 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130501437813.html">Ocean bottom seismometer package</a> <b>[P]</b> . <span> 外国专利：  US11237285B2 </span> <span> . 2022-02-01</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：海底地震仪包装 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130500709698.html">Method and system for deployment of ocean bottom seismometers</a> <b>[P]</b> . <span> 外国专利：  US11131785B2 </span> <span> . 2021-09-28</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：用于部署海底地震仪的方法和系统 </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('0704019849591','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 class="current">目前支持订阅全部北京大学中文核心（2020）期刊目录。</p> <div style="display: flex;margin-top: 69px;justify-content: space-between;"> <div 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