美国与德国将于11月中旬商讨药品定价

yun2025

美国与德国将于11月中旬商讨药品定价

地震波模型“谛听”在台站边缘计算，首报从波形抵站后计时

中国地震局地球物理研究所介绍了地震波模型“谛听”的工作方式。它学习的是台网记录的振动波形，可辨认地震事件、区分震相，初估震级和震中距。研究人员表示，地震波抵达最近台站后，系统约三秒即可给出初报。这三秒从波抵达台站开始计算，不是从地下发生地震的时刻开始，也不是预先预测地震会发生。

传统速报需要汇集多个台站的数据，单站模型可以先在台站侧计算，为较早一轮响应提供参考，但单站估计精度有限。团队举例，在西藏定日6.8级地震中，模型曾处理珠峰台和日喀则台的连续记录，识别相关事件并追踪余震。模型由地球物理研究所与国家超级计算成都中心、清华大学等合作研发，2024年发布亿级参数版本，2025年初又研制出十亿级参数版本。在这些任务中，震中距指台站与震中的距离，也是单站初步估算的参数之一。

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