NEMO - \onde：安装在地中海2000米深处的声学背景实时监测海底站
NEMO-\onde: a submarine station for real-time monitoring of acoustic background installed at 2000 m depth in the Mediterranean Sea
摘要：
NEMO（中微子地中海天文台）合作项目在卡塔尼亚（西西里）港以东25公里处2 000米深处安装了一个水下实验室，对地中海水下高能中微子千米$^3$级探测器的原型和新技术进行长期测试。在这一框架内，协作组从2005年1月起部署了一个深海噪声在线监测实验装置，并成功运行了大约两年。该台站配备了4个水听器，工作频率为30赫兹至43千赫。该频率间隔与所提出的高能中微子声学探测技术的适用范围相匹配。水听器信号在水下以96 kHz的采样频率和24位的分辨率被数字化。开发了一个定制软件，用于将数据记录在高分辨率的4通道数字音频文件上。本文介绍了海洋噪声声压密度曲线测定的数据分析过程和初步结果。存储的数据库包括2000多小时的记录，是一个独特的工具，可以模拟大深度的水声噪声，将其变化作为环境参数、生物源和人类活动（船舶交通.）的函数，并确定该地区是否存在鲸目动物。
英文摘要：
The NEMO (NEutrino Mediterranean Observatory) Collaboration installed, 25 km E offshore the port of Catania (Sicily) at 2000 m depth, an underwater laboratory to perform long-term tests of prototypes and new technologies for an underwater high energy neutrino km$^3$-scale detector in the Mediterranean Sea. In this framework the collaboration deployed and successfully operated for about two years, starting form January 2005, an experimental apparatus for on-line monitoring of deep-sea noise. The station was equipped with 4 hydrophones and it is operational in the range 30 Hz - 43 kHz. This interval of frequencies matches the range suitable for the proposed acoustic detection technique of high energy neutrinos. Hydrophone signals were digitized underwater at 96 kHz sampling frequency and 24 bits resolution. A custom software was developed to record data on high resolution 4-channels digital audio file. This paper deals with the data analysis procedure and first results on the determination of sea noise sound pressure density curves. The stored data library, consisting of more than 2000 hours of recordings, is a unique tool to model underwater acoustic noise at large depth, to characterise its variations as a function of environmental parameters, biological sources and human activities (ship traffic, ...), and to determine the presence of cetaceans in the area.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
