سمت عنكبوتي

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This page is a translated version of the page Dictionary:Azimuth spider and the translation is 50% complete.
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{{#category_index:A|azimuth spider}} رسم يظهر اتجاهات المصادر لمجموعة من السجلات الزلزالية. انظر الشكل T-3.

Segt3a.jpg


Segt3b.jpg

FIG. T-3. 3D control plots show the distribution of multiplicity, offsets, azimuths, etc. in various bins; they permit visualizing the uniformity that has been achieved. The black squares and green circles show source and geophone locations. The distribution of offsets (a) and azimuths (b) is not completely uniform even in a land survey where the acquisition is regular. Minor deviations in streamer location produce multiplicity irregularities in a marine survey (c) that are partially alleviated by flexible binning. (From Yilmaz, 2000, 1023, 1032, 1033.)