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首页> 外文期刊>Seismological research letters >Evaluation of the Pacific Tsunami Warning Center's Performance for the Caribbean Based on the Compilation and Analysis of Tsunami Messages Issued between 2003 and July 2017
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Evaluation of the Pacific Tsunami Warning Center's Performance for the Caribbean Based on the Compilation and Analysis of Tsunami Messages Issued between 2003 and July 2017

机译：基于2017年至7月至7月签发的海啸信息的汇编和分析，评估太平洋海啸预警中心对加勒比绩效的绩效

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摘要

We evaluate the Pacific Tsunami Warning Center's (PTWC) performance for the Caribbean relying on the compilation of 298 messages issued for this region between 2003 and July 2017. Matching the earthquake parameters included in these messages with the corresponding solutions published in later more authoritative catalogs allowed us to calculate essential statistics for quality indicators such as response time, epicentral offset, magnitude residual, and their spatial and temporal distributions. Analysis of these statistics reveals that the PTWC has gradually reduced the response times for the Caribbean from a median of 11 min before 2006 to just under 3 min in 2017. The PTWC has also kept the magnitude residuals at 0.2 magnitude unit and the epicentral offsets at or under the historical margin of error despite processing an increasingly larger number of events since 2013. The quality of the preliminary earthquake source parameters issued by the PTWC, combined with the speed of its messages for this region, validates the PTWC data processing system for the Caribbean as capable of handling events in the vicinity of Puerto Rico and the Virgin Islands (PRVI) with the speed and accuracy required to provide them with local tsunami warning products. Notwithstanding, despite fast issuance of tsunami messages from the PTWC, given the potential generation of tsunamis with very short travel times of even less than 5 min, PRVI must continue to educate the population to self evacuate in the event of strong or long ground shaking instead of waiting for official tsunami messages.
机译：我们评估了Pacific海啸预警中心（PTWC）加勒比地依赖于2003年至2017年至7月颁发的298条邮件的汇编。将这些邮件中包含的地震参数与允许的更多权威目录中发布的相应解决方案匹配我们计算质量指标的基本统计数据，如响应时间，震中偏移，幅度残差及其空间和时间分布。这些统计数据的分析表明，PTWC在2017年之前从11分钟的11分钟中位逐渐减少了加勒比地区的响应时间，而是在2017年的3分钟内.PTWC也使得0.2幅度单位和震中偏移量保持幅度残余物。尽管处理了自2013年以来的历史数量越来越大的事件，但在2013年以来的历史数量越来越多的情况下，PTWC颁发的初步地震源参数的质量结合了该区域的速度，验证了PTWC数据处理系统加勒比地区饰演波多托里科附近的活动和维尔京群岛（PRVI）的活动，速度和准确性为您提供当地海啸预警产品。尽管如此，尽管虽然来自PTWC的海啸信息快速发布了海啸的潜在一代，但由于甚至不到5分钟的旅行时间，因此必须继续教育人口，以便在强大或长的地面摇动的情况下自行自然等待官方海啸消息。

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