深海底リアルタイム観測ネットワークの構築

近年来，我国地震观测取得了长足进展，同时海底观测系统的建设也方兴未艾。而欧美及日本等发达国家在海底有线实时监测的成功先例，为我国相应工作的开展提供了良好的参考及借鉴。其中日本海底有线实时监测系统DONET始建于2011年，专注于海底地动—水压信号的高效采集，旨在监视日本南海海槽的地震和海啸事件。本文主要介绍DONET的硬件布局、搭建流程以及科研产出情况，并简要介绍我国国家海底科学观测网的基本信息。

Orientations of DONET seismometers estimated from seismic waveforms

Significant progress has been made in the seismological observation in China recently, with a good start for the construction of ocean-floor observatories. The successes in the ocean-floor observing systems worldwide can serve China as good examples. Dense Ocean floor Network system for Earthquakes and Tsunamis （DONET） of Japan was built in 2011. This system focuses on observing the seafloor ground motion and hydraulic pressure signals efficiently, aiming at monitoring the earthquake and tsunami events in the Nankai Trough region. This paper provides a brief review into the hardware layout, construction procedures, and related scientific researches of the DONET, which can serve as good experiences for the Chinese counterparts. Lastly, we introduce details of the National Seafloor Observatory Network Project in China.