唐山大地震发生40多年后，为何还会出现5级余震？
<p><br/></p><p><br/></p><p><br/></p><section data-role="outer" label="Powered by 135editor.com"><header><p style="text-align:center;max-width: 100%;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);line-height: 1.5em;box-sizing: border-box !important;overflow-wrap: break-word !important;font-family: -apple-system-font, BlinkMacSystemFont, Arial, sans-serif;"><strong><span style="max-width: 100%;font-size: 16px;box-sizing: border-box !important;overflow-wrap: break-word !important;">7月12日06时38分</span></strong></p><p style="text-align:center;max-width: 100%;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);line-height: 1.5em;box-sizing: border-box !important;overflow-wrap: break-word !important;font-family: -apple-system-font, BlinkMacSystemFont, Arial, sans-serif;"><strong><span style="max-width: 100%;font-size: 16px;box-sizing: border-box !important;overflow-wrap: break-word !important;">河北唐山市古冶区</span></strong></p><p style="text-align:center;max-width: 100%;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);line-height: 1.5em;box-sizing: border-box !important;overflow-wrap: break-word !important;font-family: -apple-system-font, BlinkMacSystemFont, Arial, sans-serif;"><strong><span style="max-width: 100%;font-size: 16px;box-sizing: border-box !important;overflow-wrap: break-word !important;">发生5.1级地震</span></strong></p><p><br/></p><p style="text-align:center;max-width: 100%;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);line-height: 1.5em;box-sizing: border-box !important;overflow-wrap: break-word !important;font-family: -apple-system-font, BlinkMacSystemFont, Arial, sans-serif;"><strong><span style="max-width: 100%;font-size: 16px;box-sizing: border-box !important;overflow-wrap: break-word !important;"></span></strong></p><p style="white-space: normal;text-indent: 0em;"><br/></p><p style="white-space: normal;text-indent: 2em;"><span style="font-size: 16px;">据河北地震局消息，本次地震发生在唐山老震区，最近的断层尚未命名，距离约6公里。其他最近的断层是榛子镇断裂，距离约12公里。截至12日上午10时，共发生余震33个，其中2.0～2.9级地震2个，1.0级以下31个。</span></p><h1 style="line-height: 1.5em;text-align: center;font-weight: bold;"><br/></h1><h1 style="line-height: 1.5em;text-align: center;font-weight: bold;"><strong>7月12日</strong><br/></h1><h1 style="line-height: 1.5em;text-align: center;font-weight: bold;"><strong>中国地震台网中心</strong></h1><h1 style="line-height: 1.5em;text-align: center;font-weight: bold;"><strong>举行唐山古冶5.1级地震情况</strong></h1><h1 style="line-height: 1.5em;text-align: center;font-weight: bold;"><strong>通报会确认：</strong></h1><h1 style="line-height: 1.5em;font-weight: bold;"><p><br/></p></h1><section data-role="outer" label="Powered by 135editor.com"><section data-tools="135编辑器" data-id="93626" data-color="#1e5aa2"><section style="text-align: center;margin: 10px 0%;box-sizing: border-box;"><section style="display: inline-block;width: 90%;vertical-align: top;border-right: 1px solid rgb(30, 90, 162);border-top-right-radius: 0px;border-left: 1px solid rgb(30, 90, 162);border-bottom-left-radius: 0px;box-sizing: border-box;" data-width="90%"><section style="box-sizing: border-box;"><section style="display: inline-block;width: 90%;vertical-align: top;box-sizing: border-box;" data-width="90%"><section style="box-sizing: border-box;"><section style="color: rgb(30, 90, 162);font-size: 14px;box-sizing: border-box;"><p style="box-sizing: border-box;">▼</p></section></section><section style="margin: 10px;box-sizing: border-box;"><section style="text-align: justify;letter-spacing: 1.5px;color: rgb(63, 63, 63);font-size: 14px;line-height: 1.75em;"><section style="text-indent: 2em;"><span style="color: #1E5AA2;"><strong><span style="font-size: 16px;">本次地震为1976年唐山7.8级大地震序列的一次5级余震起伏活动。</span></strong></span></section></section></section></section></section><section style="text-align: left;box-sizing: border-box;transform: translate3d(5px, 0px, 0px);-webkit-transform: translate3d(5px, 0px, 0px);-moz-transform: translate3d(5px, 0px, 0px);-ms-transform: translate3d(5px, 0px, 0px);-o-transform: translate3d(5px, 0px, 0px);"><section style="display: inline-block;height: 1.6em;width: 20%;vertical-align: top;border-left: 1px solid rgb(30, 90, 162);border-bottom-left-radius: 0px;border-bottom: 1px solid rgb(30, 90, 162);border-bottom-right-radius: 0px;box-sizing: border-box;overflow: hidden;" data-width="20%"><br/></section></section></section></section></section><section data-role="paragraph"><p style="text-align:center;max-width: 100%;min-height: 1em;box-sizing: border-box !important;overflow-wrap: break-word !important;"><br/></p></section></section><section data-role="outer"><section data-tools="135编辑器" data-id="93120" data-color="#1e5aa2"><section style="padding-top: 10px;padding-bottom: 10px;box-sizing: border-box;"><section style="width: 100%;text-align: center;" data-width="100%"><section style="display: inline-block;width: auto;"><p style="text-align:center;padding-right: 5px;padding-left: 5px;font-size: 16px;letter-spacing: 1.5px;color: rgb(62, 62, 62);"><strong>唐山大地震</strong></p><p style="text-align:center;padding-right: 5px;padding-left: 5px;font-size: 16px;letter-spacing: 1.5px;color: rgb(62, 62, 62);"><strong>发生40多年后</strong></p><p style="text-align:center;padding-right: 5px;padding-left: 5px;font-size: 16px;letter-spacing: 1.5px;color: rgb(62, 62, 62);"><strong>为何还会出现5级余震？</strong></p><section style="width: 100%;height: 1px;background: #333333;margin-top: 6px;overflow: hidden;" data-width="100%"><br/></section><section style="width: 100%;height: 1px;background: #333333;margin-top: 3px;overflow: hidden;" data-width="100%"><br/></section><section style="margin-top: -17px;"><section style="display: inline-block;background: rgb(254, 254, 254);padding-right: 5px;padding-left: 5px;font-size: 12px;color: rgb(30, 90, 162);">▲▲▲</section></section></section></section></section></section></section><h1 style="line-height: 1.5em;font-weight: bold;"><br/></h1><h1 style="line-height: 1.75em;text-indent: 2em;">中国地震台网中心地震预报部总工程师蒋海昆研究员科普解释说，根据初步研究结果，余震活动持续时间实际上和地震构造加载速率相关，构造加载速率越快，余震衰减越快，中国大陆东部和西部比起来，唐山地区地质构造加载速率非常慢，所以<span style="color: rgb(30, 90, 162);"><strong>唐山大地震的余震持续时间也非常长，会持续上百年。</strong></span><br/></h1><section style="line-height: 1.5em;"><br/></section><section style="max-width: 100%;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);line-height: 1.5em;box-sizing: border-box !important;overflow-wrap: break-word !important;font-family: -apple-system-font, BlinkMacSystemFont, Arial, sans-serif;"><p style="line-height: 1.75em; text-align: center;"><br style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"/></p></section><section style="max-width: 100%;min-height: 1em;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);line-height: 1.5em;text-align: center;box-sizing: border-box !important;overflow-wrap: break-word !important;font-family: -apple-system-font, BlinkMacSystemFont, Arial, sans-serif;"><p style="line-height: 1.75em;"><span style="font-size: 16px;max-width: 100%;color: #888888;box-sizing: border-box !important;overflow-wrap: break-word !important;">图片来源：北京市地震局微博</span></p></section><section data-support="96编辑器" data-style-id="26111" style="max-width: 100%;letter-spacing: 0.544px;white-space: normal;background-color: rgb(255, 255, 255);box-sizing: border-box !important;overflow-wrap: break-word !important;font-family: -apple-system-font, BlinkMacSystemFont, Arial, sans-serif;"><section data-support="96编辑器" data-style-id="26111" style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section data-bdopacity="1%" style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section style="max-width: 100%;line-height: 1.5em;box-sizing: border-box !important;overflow-wrap: break-word !important;"><br/></section></section></section></section></section><section data-role="outer"><section data-tools="135编辑器" data-id="93120" data-color="#1e5aa2"><section style="padding-top: 10px;padding-bottom: 10px;box-sizing: border-box;"><section style="width: 100%;text-align: center;" data-width="100%"><section style="display: inline-block;width: auto;"><p style="text-align:center;padding-right: 5px;padding-left: 5px;font-size: 16px;letter-spacing: 1.5px;color: rgb(62, 62, 62);"><strong>此次地震的背景是什么情况？</strong></p><p style="text-align:center;padding-right: 5px;padding-left: 5px;font-size: 16px;letter-spacing: 1.5px;color: rgb(62, 62, 62);"><strong>是否会有较大地震？</strong></p><section style="width: 100%;height: 1px;background: #333333;margin-top: 6px;overflow: hidden;" data-width="100%"><br/></section><section style="width: 100%;height: 1px;background: #333333;margin-top: 3px;overflow: hidden;" data-width="100%"><br/></section><section style="margin-top: -17px;"><section style="display: inline-block;background: #fefefe;padding-right: 5px;padding-left: 5px;font-size: 12px;color: #1e5aa2;">▲▲▲</section></section></section></section></section></section></section><section style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><section style="max-width: 100%;box-sizing: border-box !important;overflow-wrap: break-word !important;"><p style="max-width: 100%;min-height: 1em;line-height: 1.5em;text-indent: 2em;box-sizing: border-box !important;overflow-wrap: break-word !important;"><br/></p><p style="max-width: 100%;min-height: 1em;line-height: 1.5em;text-indent: 0em;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span style="font-size: 16px;"> 该地震发生在1976年唐山7.8级地震余震区内。唐山地震余震区的地震活动非常丰富，呈起伏衰减状态，至今仍有4、5级左右地震的发生。</span></p><p style="max-width: 100%;min-height: 1em;line-height: 1.5em;text-indent: 2em;box-sizing: border-box !important;overflow-wrap: break-word !important;"><br/></p><p style="max-width: 100%;min-height: 1em;line-height: 1.5em;text-indent: 0em;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span style="font-size: 16px;"> 如1995年10月6日河北唐山市古冶区发生5.0级地震，2012年5月28日河北唐山市市辖区、滦县交界4.8级地震，今年7月12日又发生5.1级地震。据专家会商分析，本次地震原震区近几日发生5级以上地震的可能性不大。</span></p><p style="max-width: 100%;min-height: 1em;line-height: 1.5em;text-indent: 0em;box-sizing: border-box !important;overflow-wrap: break-word !important;"><span style="font-size: 16px;"><br/></span></p></section></section></section></section></section></section></section></header></section><p><br/></p><p style="white-space: normal;max-width: 100%;min-height: 1em;font-family: -apple-system-font, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif;letter-spacing: 0.544px;background-color: rgb(255, 255, 255);text-align: center;box-sizing: border-box !important;overflow-wrap: break-word !important;"><br/></p><h1 style="white-space: normal;font-family: -apple-system-font, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif;letter-spacing: 0.544px;overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="margin-right: 8px;margin-left: 8px;text-align: center;line-height: normal;overflow-wrap: break-word !important;"><strong style="color: rgb(89, 87, 87);font-family: Helvetica Neue, Helvetica, Hiragino Sans GB, Microsoft YaHei, Arial, sans-serif;overflow-wrap: break-word !important;">- end -</strong><br style="overflow-wrap: break-word !important;"/></section><section style="margin-right: 8px;margin-left: 8px;text-align: center;line-height: normal;overflow-wrap: break-word !important;"><br style="overflow-wrap: break-word !important;"/></section><section style="margin-right: 8px;margin-left: 8px;text-align: center;line-height: normal;overflow-wrap: break-word !important;"><br/></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></h1><h1 style="white-space: normal;font-family: -apple-system-font, BlinkMacSystemFont, Helvetica Neue, PingFang SC, Hiragino Sans GB, Microsoft YaHei UI, Microsoft YaHei, Arial, sans-serif;letter-spacing: 0.544px;overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="overflow-wrap: break-word !important;"><section style="margin-right: 8px;margin-left: 8px;letter-spacing: 0px;line-height: 1.5em;overflow-wrap: break-word !important;"><span style="font-size: 12px;color: rgb(89, 87, 87);overflow-wrap: break-word !important;">▍图文来源：江苏新闻 ▍</span></section><p style="margin-right: 8px;margin-left: 8px;letter-spacing: 0px;line-height: normal;overflow-wrap: break-word !important;"><br/></p></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></section></h1><p><br/></p><link rel="stylesheet" href="http://www.320924.com/source/plugin/wcn_editor/public/wcn_editor_fit.css?v134_ymF" id="wcn_editor_css"/>
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