Capturing the Acoustic Radiation Pattern of Strombolian Eruptions using Infrasound Sensors Aboard a Tethered Aerostat, Yasur Volcano, Vanuatu

Jolly Arthur D.; Matoza Robin S.; Fee David; Kennedy Ben M.; Iezzi Alexandra M.; Fitzgerald Rebecca H.; Austin Allison C.; Johnson Richard

摘要

Abstract >We obtained an unprecedented view of the acoustic radiation from persistent strombolian volcanic explosions at Yasur volcano, Vanuatu, from the deployment of infrasound sensors attached to a tethered aerostat. While traditional ground‐based infrasound arrays may sample only a small portion of the eruption pressure wavefield, we were able to densely sample angular ranges of ~200° in azimuth and ~50° in takeoff angle by placing the aerostat at 38 tethered loiter positions around the active vent. The airborne data joined contemporaneously collected ground‐based infrasound and video recordings over the period 29 July to 1 August 2016. We observe a persistent variation in the acoustic radiation pattern with average eastward directed root‐mean‐square pressures more than 2 times larger than in other directions. The observed radiation pattern may be related to both path effects from the crater walls, and source directionality. </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> >我们在瓦努阿图yasur火山的持久性Strombolian火山爆炸中获得了前所未有的声辐射。从连接到束缚空气静止器的基础传感器的部署中。虽然传统的地面基础阵列可以仅采样爆发压力波场的一小部分，但是我们能够通过将空气静渗在38个系绳放置位置处的起飞角度在方位角和〜50°中的〜50°中的〜50°的角度范围。活性通风口。空中数据加入了2009年7月29日至8月1日的同时收集的基础地基和录像。我们观察了声辐射模式的持续变化，平均向东指向根均线压力超过2倍以上的2倍以上其他方向。观察到的辐射图案可能与来自火山口壁的路径效应和源方向性有关。</ 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19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=Jolly Arthur D.&option=202" target="_blank" rel="nofollow">Jolly Arthur D.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Matoza Robin S.&option=202" target="_blank" rel="nofollow">Matoza Robin S.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Fee David&option=202" target="_blank" rel="nofollow">Fee David;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kennedy Ben M.&option=202" target="_blank" rel="nofollow">Kennedy Ben M.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Iezzi Alexandra M.&option=202" target="_blank" rel="nofollow">Iezzi Alexandra M.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Fitzgerald Rebecca H.&option=202" target="_blank" rel="nofollow">Fitzgerald Rebecca H.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Austin Allison C.&option=202" target="_blank" rel="nofollow">Austin Allison C.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Johnson Richard&option=202" target="_blank" rel="nofollow">Johnson Richard;</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>GNS ScienceLower Hutt New Zealand;</p> <p>Department of Earth Science and Earth Research InstituteUniversity of CaliforniaSanta Barbara CA USA;</p> <p>Geophysical InstituteUniversity of Alaska FairbanksFairbanks AK USA;</p> <p>Department of Geological SciencesUniversity of CanterburyChristchurch New Zealand;</p> <p>Geophysical InstituteUniversity of Alaska FairbanksFairbanks AK USA;</p> <p>Department of Geological SciencesUniversity of CanterburyChristchurch New Zealand;</p> <p>Department of Earth Science and Earth Research InstituteUniversity of CaliforniaSanta Barbara CA USA;</p> <p>GNS Science Wairakei Research CentreTaupo New Zealand;</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=acoustic&option=203" rel="nofollow">acoustic;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=infrasound&option=203" rel="nofollow">infrasound;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=directivity&option=203" rel="nofollow">directivity;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yasur&option=203" rel="nofollow">Yasur;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=eruption&option=203" rel="nofollow">eruption;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=strombolian&option=203" rel="nofollow">strombolian;</a> </p> <div class="translation"> 机译：声学;基于;方向性;yasur;爆发;Strombolian; 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