| Term | Definition |
|---|---|
| Network | A seismic network indicates the a set of recording instruments (short-period, broadband, or accelerometric sensors) managed by a single institution. |
| Network Code | The code associated to the recording Seismic Network according to the International Federation of Seismograph Network.
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| Nodal Plane | The two orthogonal planes that intersect the focal sphere surrounding the earthquake source; the fault plane is the nodal plane on which the slip occurs.
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| Nucleation Point | The point over the fault plane where an earthquake rupture starts (see Hypocenter).
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