DSpace/Manakin Repository

Programa de Pós-Graduação em Geofísica (PGGEOFISICA)

Programa de Pós-Graduação em Geofísica (PGGEOFISICA)

Submissões recentes

  • Luz, Marcos Augusto Lima da; https://orcid.org/0000-0002-7076-0633; https://lattes.cnpq.br/2016337545817271 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 9-09-30)
    This research presents a hybrid seismic automation methodology that integrates artificial intelligence techniques with deterministic methods for the automatic analysis and estimation of seismic velocity fields. The main ...
  • Matos, Maria Luíza Belmonte Bulcão de; http://lattes.cnpq.br/8994928445788191 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 6-06-17)
    This study aims to understand and investigate the physical and biological processes that influence the variability of pCOff in the Southwestern Atlantic Ocean, using numerical model data provided by the Copernicus Marine ...
  • Silva, Annie Gabrielle de Oliveira; https://orcid.org/0009-0005-1130-7133; http://lattes.cnpq.br/8879845916419984 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2-02-27)
    The main objective of this dissertation was to test inversion methodologies applied to synthetic gravimetric and geoelectrical data, integrating the inversion and interpretation of these data for the study of a hydrogeological ...
  • Vieira, Marcelo Querino e Silva do Prado; https://orcid.org/0000-0003-1823-9442; https://lattes.cnpq.br/0787103175584763 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2024-11-28)
    This work offers two methods to evaluate the quality of traveltime tomography with regularization by derivative matrices and also to improve velocity models. Both methods are based on Barbieri's work, originally developed ...
  • Jesus, Yan Carlos Viegas de; https://orcid.org/0009-0002-6130-166X; http://lattes.cnpq.br/7988240092528046 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UfbaBrasilInstituto de Geociências, 6-12)
    Nonlinear inversion of geophysical data uses global and local optimization methods. These methods can be separately used, each with its own advantages and disadvantages. Local scope methods tend to have high convergence ...
  • Silva, Pablo Uale de Carvalho; https://orcid.org/0000-0003-0850-1582; http://lattes.cnpq.br/4074050073758554 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2024-09-30)
    This dissertation presents the results of a geophysical investigation in two landfills: the Camaçari Landfill and the Metropolitano Centro Landfill. These two landfills have distinct characteristics regarding the planning, ...
  • Sampaio, Mariana Rosário Conceição; https://orcid.org/0000-0001-6271-2052; http://lattes.cnpq.br/6976030276508005 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2024-08-09)
    Geophysical interpretation has become increasingly important in identifying targets for mineral resource exploration in Brazil. The Transition Zone between the Pernambuco-Alagoas Domain and the Sergipano Belt, located in ...
  • Apraez, Daniel Esteban Revelo; https://orcid.org/0000-0003-3943-7106; http://lattes.cnpq.br/5350593096447424 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2024-10-03)
    This thesis addresses the development of techniques related to seismic migration, aiming overcome the limitations and challenges present in traditional methodologies. The three chapters of this work present solutions that ...
  • Ariza Ariza, Cristian David; http://lattes.cnpq.br/7464905313739223 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2024-01-15)
    This work describes a method for solving large, positive-defined, block-structured, dense linear systems with multiple right-hand sides that uses high-performance parallel computing. The system solution is obtained through ...
  • Oliveira, Gustavo Lauton de; https://orcid.org/0000-0002-9146-792X; http://lattes.cnpq.br/5052581054457159 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2023-05-10)
    Understanding the processes responsible for extreme events is crucial for public safety and managing coastal and offshore economic activities. The current scientific comprehension has demonstrated that ocean physics may ...
  • Souza, Wilker Eduardo; https://lattes.cnpq.br/2250287053898908 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-11-18)
    The processing of 3D land seismic data is always a great challenge for the petroleum industry, which constitutes a current, relevant, and open to contributions. Among the main problems in the processing flow, we highlight ...
  • Oliveira, Vinicius Arimateia Ribeiro; https://lattes.cnpq.br/7945427326318467 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-09-01)
    The Southern Borborema Province and the Northern São Francisco Craton experienced major tectonic events in the Neoproterozoic Era and their tectonic history is still not completely clarified due to insufficient geotectonic ...
  • Santana, Jorge Luís dos Santos; http://lattes.cnpq.br/9940243554510324 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-08-19)
    Seen as a fundamental parameter for a reliable geological image of the subsurface, and consequent exploratory success, seismic velocity is one of the prerequisites in the seismic exploration chain. Such velocity relates ...
  • Figueiredo, Nei Davi Costa; https://lattes.cnpq.br/4886578068264516 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-08-18)
    The construction of seismic images through reverse time migration (RTM) on pre-stacked data and in the time domain requires the cross-correlation between the wavefield of the direct propagation of the source and the one ...
  • Ferreira, Gleidson Diniz; http://lattes.cnpq.br/1487997515566935 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-08-05)
    The detection of discontinuities has been highlighted in recent years due to the improvement in the quality of seismic data, thus contributing to the improvement in the interpretation of available data from oil and gas ...
  • Benjumea, Jorge Luis Abril; 0000-0002-3782-1748; http://lattes.cnpq.br/1616437394377913 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-07-01)
    The use of optimization global techniques in geophysics to solve inverse problems, allowing to incorporate with easiness several kinds of constraints to create an stable mathematically solution. The 1D forward modeling of ...
  • Farias, Fernanda Figueiredo; 0000-0002-4209-9868; http://lattes.cnpq.br/8401436452530931 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-04-05)
    Attempts to obtain information from the Earth's subsurface usually require accurate numerical simulations of the wave equation, essential in the inversion processes which has as final goal the construction of the velocity ...
  • Novais, Diego Menezes; 0000-0003-0558-1687; http://lattes.cnpq.br/9508801832554545 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-04-11)
    Harmonic modeling is used for gravimetric field representation of massive bodies, such as the Earth. The solution of Laplace’s equation based on spherical coordinates, the spherical harmonic series, is widely used in ...
  • Fonseca, Lucas Souza da; http://lattes.cnpq.br/1373812803184050 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-03-21)
    The present work examines the effects of coastal upwelling on the longitudinal density gradient within Todos os Santos Bay (BTS) and, therefore, its effect on gravitational circulation at the entrance of the estuary, as ...
  • Soares, Átila Saraiva Quintela; 0000-0003-0042-3583; http://lattes.cnpq.br/0772509858545409 (Universidade Federal da BahiaPós-Graduação em Geofísica (PGEOF) UFBABrasilInstituto de Geociências, 2022-01-18)
    The concept of deblurring filters is a novel approach to the least-squares migration, trying to achieve similar results but with only one iteration, without resorting to computationally expensive iterative methods. There ...

Ver mais

Buscar DSpace


Busca avançada

Navegar

Minha conta

Discover

Estatística

RSS Feeds