geophystechГеофизические технологииRussian Journal of Geophysical Technologies2619-1563IPGG SB RAS10.18303/2619-1563-2020-2-4geophystech-100Research ArticleСтатьиКоличественная оценка пространственного разрешения в задачах сейсмотомографииQuantitative evaluation of spatial resolution in seismic tomographyКулаковИ. Ю.KoulakovI. Yu.

КУЛАКОВ Иван Юрьевич – д.г.-м.н., член-корреспондент РАН, заместитель директора, 630090, Новосибирск, просп. Акад. Коптюга, 3, Россия; 630090, Новосибирск, ул. Пирогова, 1, Россия

Koptyug Ave., 3, Novosibirsk, 630090, Russia; Pirogova Str., 1, Novosibirsk, 630090, Russia

KoulakovIY@ipgg.sbras.ruЩелкановаН. А.SchelkanovaN. A.

ЩЕЛКАНОВА Наталья Александровна – студентка геолого-геофизического факультета, 630090, Новосибирск, просп. Акад. Коптюга, 3, Россия; 630090, Новосибирск, ул. Пирогова, 1, Россия

Koptyug Ave., 3, Novosibirsk, 630090, Russia; Pirogova Str., 1, Novosibirsk, 630090, Russia

СтупинаТ. А.StupinaT. A.

СТУПИНА Татьяна Александровна – к.ф.-м.н., научный сотрудник лаборатории сейсмической томографии, 630090, Новосибирск, просп. Акад. Коптюга, 3, Россия; 630090, Новосибирск, ул. Пирогова, 1, Россия

Koptyug Ave., 3, Novosibirsk, 630090, Russia; Pirogova Str., 1, Novosibirsk, 630090, Russia

StupinaTA@ipgg.sbras.ruИнститут нефтегазовой геологии и геофизики им. А.А. Трофимука СО РАН; Новосибирский государственный университетРоссияTrofimuk Institute of Petroleum Geology and Geophysics SB RAS; Novosibirsk State UniversityRussian Federation20201512202002417Copyright © Кулаков И.Ю., Щелканова Н.А., Ступина Т.А., 20202020Кулаков И.Ю., Щелканова Н.А., Ступина Т.А.Koulakov I.Y., Schelkanova N.A., Stupina T.A.This work is licensed under a Creative Commons Attribution 4.0 License.https://www.rjgt.ru/jour/article/view/100

В работе рассматривается проблема формализованной оценки разрешения в задачах сейсмической томографии. Показано, что применение традиционного метода на базе расчета матрицы разрешения может приводить к неверным выводам в случае использования сетки параметризации с разным шагом. Предложена альтернативная версия оценки разрешения на основе восстановления единичных аномалий фиксированной формы. Разработан также алгоритм оценки разрешения в зависимости от направления.

We consider a problem of formal evaluation of spatial resolution in seismic tomography. We have shown that a traditional method of resolution estimate based on calculation of the resolution matrix appears to be misleading in a case of using the parameterization grid with different spacing. We have proposed an alternative algorithm based on reconstruction of a series of unit anomalies of fixed shapes. Furthermore, we have developed an algorithm for the direction dependent resolution estimates.

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The authors declare that there are no conflicts of interest present.