Equipment for Automatic, High-Speed Digitization of Data from the Carnegie-DTM Broadband Seismic Network

该项目将导致一个自动的建设 数字回放系统，用于检索17年来的事件数据， 卡内基研究所的模拟数据磁带。 地磁学地震仪网络。broad.band七 仪器网络产生broad.band（0.008至30 Hz）， 高动态范围（160分贝）地震事件记录。 模拟磁带的自动数字化将需要：（1） 机械回放系统，具有超低噪声电子设备，以及 (2)具有实时响应能力的高速工作站， 以每秒百万个样本的速率进行采样和采集数据 一下 回放的硬件和软件实现 系统将在六个月内完成， 磁带库将需要额外一年时间。 完成后，这个档案将代表最大的 数字宽带地震数据源，并将成为 地震学研究的宝贵资源 地球的内部结构。

This project will result in the construction of an automatic digital playback system for retrieving event data from 17 years of analog data tapes from the Carnegie Institution.Department of Terrestrial Magnetism broad.band seismometer network. The seven instrument network produces broad.band (0.008 to 30 Hz), high.dynamic range (160 db) recordings of seismic events. Automatic digitization of the analog tapes will require: (1) a mechanical playback system with ultra low-noise electronics, and (2) a high-speed workstation with real-time response sufficient to digitize and acquire data at a rate of a million samples per second. Hardware and software implementation of the playback system will be accomplished in six months, and digitization of the tape library will take an additional year. When completed, this archive will represent the largest source of digital broad-band seismic data available and will be a valuable resource for the seismological community in its studies of the interior structure of the Earth.