Following the recommendations of an international committee (Allen et al., 2012), since October 2017, the Israeli Seismic Network has been undergoing significant upgrades, with 120 stations being added or upgraded throughout the country and the addition of two new datacenters. These enhancements are the backbone of the TRUAA project, assigned to the Geological Survey of Israel (GSI) by the Israeli Government, to provide earthquake early warning (EEW) capabilities for the state of Israel. The GSI contracted Nanometrics (NMX), supported by Motorola Solutions Israel, to deliver these upgrades through a turnkey project, including detailed design, equipment supply, and deployment of the network and two datacenters.The TRUAA network was designed and tailored by the GSI, in collaboration with the NMX project team, specifically to achieve efficient and robust EEW. Several significant features comprise the pillars of this network:Coverage: Station distribution has high density (5–10 km spacing) along the two main fault systems—the Dead Sea Fault and the Carmel Fault System;Instrumentation: High‐quality strong‐motion accelerometers and broadband seismometers with modern three‐channel and six‐channel dataloggers sampling at 200 samples per second;Low latency acquisition: Data are encapsulated in small packets (⁠<1 s⁠), with primary routing via high‐speed, high‐capacity telemetry links (⁠<1 s latency);Robustness: High level of redundancy throughout the system design:Dual active‐active redundant acquisition routes from each station, each utilizing multicast streaming over an IP security Virtual Private Network tunnel, via independent high‐bandwidth telemetry systemsTwo active‐active independent geographically separate datacentersDual active‐active redundant independent automatic seismic processing tool chains within each datacenter, implemented in a high availability protected virtual environment.Coverage: Station distribution has high density (5–10 km spacing) along the two main fault systems—the Dead Sea Fault and the Carmel Fault System;Instrumentation: High‐quality strong‐motion accelerometers and broadband seismometers with modern three‐channel and six‐channel dataloggers sampling at 200 samples per second;Low latency acquisition: Data are encapsulated in small packets (⁠<1 s⁠), with primary routing via high‐speed, high‐capacity telemetry links (⁠<1 s latency);Robustness: High level of redundancy throughout the system design:Dual active‐active redundant acquisition routes from each station, each utilizing multicast streaming over an IP security Virtual Private Network tunnel, via independent high‐bandwidth telemetry systemsTwo active‐active independent geographically separate datacentersDual active‐active redundant independent automatic seismic processing tool chains within each datacenter, implemented in a high availability protected virtual environment.At this time, both datacenters and over 100 stations are operational. The system is currently being commissioned, with initial early warning operation targeted for early 2021.

中文翻译：

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“ TRUAA”地震台网：升级以色列地震台网-迈向全国地震预警系统

根据国际委员会的建议（Allen et al。，2012），自2017年10月以来，以色列地震台网一直在进行重大升级，在全国范围内增加或升级了120个台站，并增加了两个新的数据中心。这些增强功能是TRUAA项目的骨干，该项目由以色列政府分配给以色列地质调查局（GSI），以为以色列提供地震预警（EEW）功能。GSI与以色列Motorola Solutions共同支持的Nanometrics（NMX）签订了交钥匙工程，包括详细设计，设备供应，网络和两个数据中心的部署，完成了这些升级。TRUAA网络是由GSI设计和定制的，与NMX项目团队合作，特别是为了实现高效而强大的EEW。该网络的几个重要特征构成了网络的支柱：覆盖范围：沿死海断层和卡梅尔断层这两个主要断层系统的站点分布具有高密度（5-10 km的间隔）；仪器：高质量的强运动加速度计具有现代三通道和六通道数据记录仪的宽带地震仪，每秒采样200个样本；低延迟采集：数据封装在小数据包（⁠<1s⁠）中，并通过高速，大容量遥测进行主要路由链路（⁠<1 s延迟）;稳健性：整个系统设计中的高冗余度：每个站点的双主动-双冗余获取路由，每个路由都利用IP安全虚拟专用网络隧道上的组播流 每个站点的双主动-主动冗余采集路径，每个都通过独立的高带宽遥测系统，通过IP安全虚拟专用网络隧道利用多播流传输，两个主动/主动独立的地理上分开的数据中心每个内部的双主动-主动冗余独立自动地震处理工具链数据中心，在高可用性受保护的虚拟环境中实施。目前，数据中心和100多个站点都可以运行。该系统目前正在调试中，最初的预警操作将在2021年初进行。通过独立的高带宽遥测系统，在高可用性受保护的虚拟环境中实施的每个数据中心内的两个主动-主动独立的地理上分离的数据中心双主动-主动冗余独立的自动地震处理工具链，此时，数据中心和100多个站点都在运行。该系统目前正在调试中，最初的预警操作目标是在2021年初。通过独立的高带宽遥测系统，在高可用性受保护的虚拟环境中实施的每个数据中心内的两个主动-主动独立的地理上分离的数据中心双主动-主动冗余独立的自动地震处理工具链，此时，数据中心和100多个站点都在运行。该系统目前正在调试中，最初的预警操作将在2021年初进行。