{"title":"Certain aspects of prestack deconvolution","authors":"Jagmeet Singh","doi":"arxiv-2408.03089","DOIUrl":null,"url":null,"abstract":"In a previous paper, we had shown that because of varying angles of incidence\nthere is a varying degree of convolution down a trace and across a gather,\nnecessitating deconvolution operators varying with time and offset. This idea\nis examined further in $t$-$x$ as well as $\\tau$-$p$ domain. We suggest better\nways to deconvolve data in $\\tau$-$p$ domain, taking into account varying\ndegree of convolution in this domain. We derive formulae for periods of surface\nmultiples in $\\tau$-$p$ domain, e.g., water column peg-legs and reverberations,\nwhich have a fixed period depending only on the value of $p$ -- and suggest a\nway to check/revise the picked velocity using the formulae, provided the\nmultiples are well separated from the primary. Periodicity of two way surface\nmultiples is also studied.","PeriodicalId":501270,"journal":{"name":"arXiv - PHYS - Geophysics","volume":"48 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - PHYS - Geophysics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2408.03089","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
In a previous paper, we had shown that because of varying angles of incidence
there is a varying degree of convolution down a trace and across a gather,
necessitating deconvolution operators varying with time and offset. This idea
is examined further in $t$-$x$ as well as $\tau$-$p$ domain. We suggest better
ways to deconvolve data in $\tau$-$p$ domain, taking into account varying
degree of convolution in this domain. We derive formulae for periods of surface
multiples in $\tau$-$p$ domain, e.g., water column peg-legs and reverberations,
which have a fixed period depending only on the value of $p$ -- and suggest a
way to check/revise the picked velocity using the formulae, provided the
multiples are well separated from the primary. Periodicity of two way surface
multiples is also studied.