產(chǎn)品描述：140XBP00400 SCHNEIDER 機架背板 對于分布式I/O模塊
固定流動
用于長期監(jiān)測某一特定地區(qū)的地震活動情況，由若干個建立在固定地點的地震臺和一個負責(zé)業(yè)務(wù)管理和資料處理職能的部門組成的地震臺網(wǎng)稱為固定臺網(wǎng)。
為了地震學(xué)和地震預(yù)報研究的需要，或在某處發(fā)生強震后，為監(jiān)視震區(qū)及鄰區(qū)的余震活動情況，臨時架設(shè)了由若干個地震臺和一個資料處理中心的地震臺網(wǎng)。一旦已取得一批有用的記錄或余震活動已趨于平靜就將臺網(wǎng)撤離．這類臺網(wǎng)稱為流動臺網(wǎng)。
地震臺網(wǎng)
用于監(jiān)測地震活動性的地震臺網(wǎng)，其尺度幾乎跨越。典型的是美國在60年代初建立的世界標準地震臺網(wǎng)（WWSSN）。該臺網(wǎng)由100余個分布在的地震臺和設(shè)在美國本土的業(yè)務(wù)管理部門組成。
在我國早已建成由24個基準地震臺組成的地震臺網(wǎng)，其尺度跨越全國。用于監(jiān)測全國的基本地震活動情況。
為了監(jiān)測省內(nèi)及鄰省交界地區(qū)的地震活動性，我國絕大多數(shù)省份均已建成由十余個至數(shù)十個地震臺組成的區(qū)域地震臺網(wǎng)。跨度一般約為數(shù)百千米。
有些省內(nèi)的地區(qū)或一些大型的工礦企業(yè)，如大型水電站，為了監(jiān)測本地區(qū)的地震活動性，建成由幾個或十余個地震臺組成的地方地震臺網(wǎng)，跨度一般約在十余千米至幾十千米間。
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Fixed flow
For long-term monitoring of seismic activity in a particular area, a network of seismic stations established at fixed locations and a department responsible for operational management and data processing functions is called a fixed network.
In order to meet the needs of seismology and earthquake prediction research, or to monitor aftershock activity in the earthquake area and adjacent areas after a strong earthquake, a seismic network consisting of several seismic stations and a data processing center has been temporarily set up. Once a useful record has been obtained or aftershock activity has subsided, the network will be withdrawn. Such networks are called mobile networks.
Seismic network
Seismic monitoring capability of the network
A seismic network used to monitor global seismic activity, spanning almost the entire globe. A typical example is the World Standard Seismic Network (WWSSN), which was established in the United States in the early 1960s. The network consists of more than 100 seismic stations worldwide and operations management offices located in the United States.
In China, a national seismic network consisting of 24 reference stations has already been built, and its scale spans the whole country. It is used to monitor basic seismic activity throughout the country.
In order to monitor the seismic activity in the provinces and the border areas of neighboring provinces, most provinces in China have built a regional seismic network consisting of more than ten to dozens of seismic stations. The span is usually about hundreds of kilometers.
In some provinces or some large industrial and mining enterprises, such as large hydropower stations, in order to monitor the seismic activity of the region, the construction of a local seismic network composed of several or more than ten seismic stations, the span is generally about more than ten kilometers to dozens of kilometers.
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?我們的優(yōu)勢：140XBP00400 SCHNEIDER 機架背板 對于分布式I/O模塊
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