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Breakdown of Earthquake Self‐Similar Scaling and Source Rupture Directivity in the 2016–2017 Central Italy Seismic Sequence

机译：地震自相似缩放和源破裂方向于2016-2017中部意大利地震序列的地震序列分解

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Abstract > To analyze the source characteristics of the 2016–2017 central Italy seismic sequence, source spectra of 78 earthquakes of M <sub>L</sub> ?=?3.5–6.1 were separated from the S wave Fourier spectra using the two‐step nonparametric generalized inversion technique. Source parameters (e.g., stress drop) were estimated from the source spectra following the ω‐square model. Stress drops were found mainly in the range 0.113–12.190?MPa. The significant dependence of stress drop on magnitude indicates the breakdown of earthquake self‐similar scaling in this sequence. The low stress drops for small events following the release of high stress by the mainshock might have led to stress accumulation on the unruptured fault, which could explain the subsequent occurrence of multiple major events. We investigated the source rupture directivity for 36 events through the azimuthal variation of apparent source spectra. Significant variation was observed at specific frequency bands (generally, over corner frequencies) in 10 events caused by rupture directivity, which was verified by the stable estimation of rupture plane. The rupture parameters confirmed unilateral ruptures predominantly on the NNW–SSE striking fault with fast rupture velocity (2.52–2.84?km/s) for the 10 events. Rupture parameters for an additional four events with stable estimated rupture plane were also analyzed. These were characterized by slow rupture velocity causing weak directivity effects. According to the rupture parameters for the 14 events, prevailing SSE or SEE (NNW or NNE) rupture directivity was a common feature for events to the north (south) of the mainshock in this earthquake sequence. </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”> <title type =“main”>抽象</ title> >分析2016-2017中央地震序列的源特征，源光谱为78使用两步非参数广义反转技术与 S </ i>波傅里叶散光技术分离出来的 m </ i> <sum> l </ sum>α=α.3.5-6.1。从Ω - 方形模型之后的源光谱估计源参数（例如，应力下降）。发现压力下降主要是0.113-12.190的范围。压力下降的显着依赖性幅度幅度表示在该序列中发生地震自相似缩放。由主轴释放高应力后的小事件的低应力下降可能导致悬垂断层的应力累积，这可以解释随后发生多重事件的发生。通过表观源光谱的方位变异，我们调查了36个事件的源破裂方向性。在由破裂方向性引起的10个事件中，在特定频带（通常，过度频率）的特定频带（通常，过频频率）中观察到的显着变化，这通过破裂平面的稳定估计来验证。破裂参数主要在NNW-SSE引人注目的情况下确认单侧破裂，这是10个事件的快速破裂速度（2.52-2.84 km / m）。还分析了具有稳定估计破裂平面的额外四个事件的破裂参数。这些以缓慢的破裂速度为特征，导致弱方向性效应。根据14个事件的破裂参数，普遍存在的SSE或SEE（NNW或NNE）破裂方向性是该地震序列中主震动的北（南）的常见特征。 </ 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>2019年第4期</span><b style="margin: 0 2px;">|</b><span>共20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=Wang Hongwei&option=202" target="_blank" rel="nofollow">Wang Hongwei;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ren Yefei&option=202" target="_blank" rel="nofollow">Ren Yefei;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wen Ruizhi&option=202" target="_blank" rel="nofollow">Wen Ruizhi;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Xu Peibin&option=202" target="_blank" rel="nofollow">Xu Peibin;</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>Institute of Engineering MechanicsChina Earthquake AdministrationHarbin China;</p> <p>Institute of Engineering MechanicsChina Earthquake AdministrationHarbin China;</p> <p>Institute of Engineering MechanicsChina Earthquake AdministrationHarbin China;</p> <p>Institute of Engineering MechanicsChina Earthquake AdministrationHarbin China;</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=source spectra&option=203" rel="nofollow">source spectra;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=stress drop&option=203" rel="nofollow">stress drop;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=earthquake self‐similar scaling&option=203" rel="nofollow">earthquake self‐similar scaling;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=rupture directivity&option=203" rel="nofollow">rupture directivity;</a> </p> <div class="translation"> 机译：源光谱;压力下降;地震自相似缩放;破裂方向性; </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/0704025590974.html">Breakdown of Earthquake Self‐Similar Scaling and Source Rupture Directivity in the 2016–2017 Central Italy Seismic Sequence</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wang Hongwei&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Wang Hongwei,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ren Yefei&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Ren Yefei,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wen Ruizhi&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Wen Ruizhi,</a> <a href="/journal-foreign-34677/" target="_blank" rel="nofollow" class="tuijian_authcolor">Journal of geophysical research. 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tuijian_authcolor"> . 许力生</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=杨智娴&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,杨智娴</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=陈运泰&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,陈运泰</a> <span> <a href="/conference-cn-32740/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 中国地震学会成立20周年学术会议 </a> <span> <span> . 1999</span> </span> </div> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/academic-degree-domestic_mphd_thesis/02031653786.html">俯冲带、转换断层、板内三个地震序列的分析:讨论板内、板缘地震序列的特征差异</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=王勤彩&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 王勤彩</a> <span> . 2000</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/061204245290.html">一种考虑初始损伤状态的地震序列下结构易损性分析方法</a> <b>[P]</b> . <span> 中国专利： CN110321653B </span> <span> . 2021.02.12</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06120113177329.html">一种地震序列作用下的核电厂区域抗震安全评估方法</a> <b>[P]</b> . <span> 中国专利： CN113221426A </span> <span> . 2021-08-06</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130429318337.html">METHOD FOR SELECTION OF MAIN STRUCTURES ROUTE LOCATION IN SEISMIC REGIONS FOR PREVENTION OF DISASTROUS CONSEQUENCES OF EARTHQUAKES</a> <b>[P]</b> . <span> 外国专利：  RU2364897C1 </span> <span> . 2009-08-20</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：预防地震灾害后果的地震区域主要结构路径位置选择方法 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130444600447.html">IMPROVEMENTS TO AN ELECTRIC APPARATUS OF SEISMIC ALERT AND PREVIOUS DETECTOR OF MACRO-EARTHQUAKES WITH RICHTER SCALE AND DEGREES FRACTIONS METER AND ALERT AND EVACUATION SYSTEMS AND WITH THE WATCHFULNESS OF QUIVERING AND OSCILLATING MOVEMENTS.</a> <b>[P]</b> . <span> 外国专利：  MXPA02002333A </span> <span> . 2003-09-11</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：具有更丰富的规模和分数分数，警报和疏散系统，并具有振荡和振荡运动的警觉性，从而改进了宏观地震的地震警报器和电气检测器的电气装置。 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130409472143.html">method for conducting a marine seismic survey using a simultaneous source technique having nss firing sequences, marine seismic survey system, processing system for processing</a> <b>[P]</b> . <span> 外国专利：  BR112014017319A8 </span> <span> . 2017-07-04</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：使用具有nss发射序列的同时源技术进行海洋地震勘测的方法，海洋地震勘测系统，用于处理的处理系统 </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('0704025590974','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="" 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 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