جمع البيانات الزلزالية

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This page is a translated version of the page Dictionary:Roll on (roll off) and the translation is 67% complete.
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الحصول على البيانات في بداية (أو نهاية) الخط الزلزالي حيث يتراكم تعدد التجميع تدريجيًا (أو يقل) في ذلك الخط.

The term roll comes from a mechnical switch known as a roll switch (rota-long by I/O was common) that allowed one to add more active receiver stations as the source locations got further from the edge of the seismic program. This is unlike walk on where the roll switch remained constant until the shooter had walked into the nominal geometry location whereas the observer began rolling the spread via the roll switch.