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SEG-Y Files are stored in a hierarchical byte-stream format that combines both textual and binary data segments. The following chart shows the byte stream structure of revision 1 (2002), [5] with revision 2 (2017) only adding an optional data trailer for 1 or more 3200-byte records at the end: [6] [7]
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This is a route-map template for the Key System, a United States interurban railway.. For a key to symbols, see {{railway line legend}}.; For information on using this template, see Template:Routemap.
They also contain important information on ground conditions at particular locations, the underlying geology, radiation pattern of the seismic waves, and the response of different types of buildings. They form an important part of the macroseismic approach, i.e. that part of seismology dealing with noninstrumental data.
The USGS also runs or supports several regional monitoring networks in the United States under the umbrella of the Advanced National Seismic System (ANSS). [12] The USGS informs authorities, emergency responders, the media, and the public, both domestic and worldwide, about significant earthquakes.
The main scientific goal of the centre is the definitive compilation of earthquake information and the readings on which they are based. Collection of reports of earthquake effects is also an important part of its operation and the Centre recomputes the location and occurrence time of earthquakes worldwide, making use of all available information.
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Source file: Source file contains the information about the Seismic source its position and their ID. Cross reference file: Cross reference file (also known as relational file) or in short, X file, is basically a relational file relating the source and the receiver when the shot occurred. It contains the details about the Shot ID, Source and ...