CDSN网月带数据结构和文件格式
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摘要
经过中国国家地震局(SSB)和美国地质调查局(USGS)的通力合作,中国数字地震台网(CDSN)于1987年10月开始运行,记有三分向短周期SP、宽频带BB、长周期LP和超长周期VLP(VeryLonsPeriod)4种频带的数据记录。CDSN的网月带中记录了数字化的VLP地震波形数据,网月带中含有网月带月志文件、台站月志文件和VLP数据文件,其中VLP数据文件有数据月志和VLP数据两个部分。网月带的物理结构是无结构的数据流,每2000个字节为一个物理块(BLOCK),每个文件由若干个BLOCK组成。网月带记录类型有3种,分别是ASCII码、BCD码和二进制数据。
China Digital Seismograph Network (CDSN) has bee operated since October of 1986by the full cooperation between China State Seismological Bureau (SSB) and UnitedStates Geology Survey (USGS). Three component data of four kinds of various frequency band, short period (SP), broad band (BB), long period (LP) and very long period(VLP), are recorded. The digital VLP seismological waveform data are recorded in network-month tape in CDSN. The network-month tape includes its month log file, stationmonth log file and VLP data file, where data month log and VLP data are included inVLP data file. The physical structure in network-month tape is non-structured dataflow, in which one physical block has 2000 bytes and one file is composed of blocks.There are three kinds of record types in network-month tape, which are ASCII codeand binary data, respectively.
引文
[1]牟其铎,1992.中国数字地震台网(CDSN)数据文件系统,地震地磁观测与研究,13,3,1-13.[2]王广福,周公威,宋臣田,夏恩山,万季梅编译,1986.现代地震台网观测技术,北京:中国科学技术出版社,1-413.[2]高原,牟其铎,郑斯华,余学军,1994.CDSN网月带VLP地震数据解调,中国地震,10,4.

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