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type="text/css"></style> <div id="ct" class="ct2 wp cl"> <div class="mn"> <div class="bm_haa cl"> <div class="bm_h cl"> <a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a><h1 class="xs2">文章</h1> </div></div> <div class="kjkjb"> <div class="bm vw" style="margin-bottom:0;"> <div class="h hm"> <div class="zxtoux"><img src="http://www.oecr.com/uc_server/avatar.php?uid=54876&size=small" /></div> <h1 class="ph">最新研究显示地核硬度要比预期模型软2.5% </h1> <p class="xg1"> 时间：2018-10-22 10:17<a class="zz" href="home.php?mod=space&uid=54876">作者：update</a> 阅读<em id="_viewnum">(662)</em> 评论: <a href="http://www.oecr.com/portal.php?mod=comment&id=7175&idtype=aid" title="查看全部评论"><em id="_commentnum">5</em></a></p> <div class="zxfb" ><a href="http://www.oecr.com/portal.php?mod=rss&catid=58" class="y xi2 rss" target="_blank" title="RSS">订阅</a></div> </div> <!--[diy=diysummarytop]--><div id="diysummarytop" class="area"></div><!--[/diy]--> <div class="s"> <div class="ss"><div><span>导读： </span>在我们成长过程中，有观点认为地核是由熔岩构成的，因此我们永远无法贯穿达到地球的另一边。而显然这个观点存在误导性，虽然我们贯穿地球，但是地核确是硬的。研究人员Hrvoje Tkalčić和来自澳大利亚国立大 ...</div> </div> <!--[diy=diysummarybottom]--><div id="diysummarybottom" class="area"></div><!--[/diy]--> <div class="d"> <!--[diy=diycontenttop]--><div id="diycontenttop" class="area"></div><!--[/diy]--> <table cellpadding="0" cellspacing="0" class="vwtb"><tr><td id="article_content"><div> 在我们成长过程中，有观点认为地核是由熔岩构成的，因此我们永远无法贯穿达到地球的另一边。而显然这个观点存在误导性，虽然我们贯穿地球，但是地核确是硬的。研究人员Hrvoje Tkalčić和来自澳大利亚国立大学（ANU）的Scholar Than-SonPhạm教授近期发表了一篇关于地核的论文。</div><div><br></div><div><p style="text-align: center;"><a href="data/attachment/portal/201810/22/101712t2uwa25unzdw17u1.png" target="_blank"><img src="data/attachment/portal/201810/22/101712t2uwa25unzdw17u1.png"></a></p></div><div><br></div><div> 由地球的内核非常小，因此很难通过行星内核来检测剪力波。在论文中，Tkalčić和Phạm通过关联不同类型的地震阶段最终确定了地球内核中剪力波的传输速度。在论文中证实了地核确实是坚硬的，但并不是特别硬。实际上，本次研究结果<a href="http://display.oecr.com" target="_blank" class="relatedlink">显示</a>硬度比“广泛使用的地球初步参考模型”低了2.5%。</div><div><br></div><div> Tkalčić博士说：“地球内核对磁场的产生和维持有着直接影响，如果没有磁场，地球表面将不会拥有生命。目前我们还不知道地核的确切温度，年龄以及固化速度，但随着全球地震学的发展我们会逐渐探索和了解这些内容。”</div><div><br></div><div><p microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 255);="" text-align:="" center;"="" center;="" 255);"="" style="text-align: center; word-wrap: normal; margin: 0px; padding: 0px; color: rgb(143, 143, 143); font-family: Tahoma, "Microsoft Yahei", Simsun; background-color: rgb(255, 255, 255);"><b style="word-wrap: normal;"><font size="5" style="word-wrap: normal;">欢迎关注OECR公众号</font></b></p><p microsoft="" yahei",="" simsun;="" background-color:="" rgb(255,="" 255,="" 255);="" text-align:="" center;"="" center;="" 255);"="" style="text-align: center; word-wrap: normal; margin: 0px; padding: 0px; color: rgb(143, 143, 143); font-family: Tahoma, "Microsoft Yahei", Simsun; background-color: rgb(255, 255, 255);"><br style="word-wrap: normal;"></p><p 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