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Esteban Alfaro Sabogal
Email: alfaro8511@gmail.com

Geologist from Universidad Industrial de Santander in 2008; MSc. in Earth Sciences from Universidad EAFIT in 2010 and PhD. in Geophysics from Universidade Federal da Bahia in 2015. MSc. candidate in Computer Sciences. Researcher in the Exploration Interpretation and Reservoir Characterization Group (GIECAR) at the Universidade Federal Fluminense.

Some of my publications


  1. Graphing balls: introduction to non-Euclidean spaces and the natural objects. Alfaro, E. December, 2023. In progress. Link: https://www.researchgate.net/publication/376582438_Graphing_balls_introduction_to_non-Euclidean_spaces_and_the_natural_objects
  2. Prediction of natural radioactivity from fractal interpolation. Alfaro, E., Isaacs, R. April, 2023. In progress. Link: https://www.researchgate.net/publication/370161618_Prediction_of_natural_radioactivity_from_fractal_interpolation
  3. Megasequences of the Northern Colombian Caribbean offshore revealed by seismic-stratigraphic analysis. Alfaro, E., Toledo, M A., Mosquera, J.C., Osorio, C.M., Kazzuo, C., Cavalcante, L. 2017. XVI Congreso Colombiano de Geología y III Simposio de Exploradores. Oral presentation. Santa Marta, Colombia. August 31- September 1, 2017.     
  4. Geological evolution of the Northern Colombian Caribbean offshore revealed by seismic-stratigraphic analysis. Esteban Alfaro, Marco Antonio Santiago Toledo, Juan Carlos Mosquera Ramírez, Claudia María Osorio Rincón, Cesar Kazzuo Vieira Nakatsubo, Luciana Mendes Cavalcante. SPE / AAPG Colombia Offshore-Challenges and Opportunities for an Emerging Industry Workshop. Oral presentation. March 2-3, 2016. Bogotá, Colombia.      
  5. The importance of geology-driven seismic processing and interpretation: a case study of the Proterozoic Sao Francisco Basin. Paulo Souza, Danilo Cruz, Esteban Sabogal, Luis Huerga Ándres, Michael Holz. 14th International Congress of the Brazilian Geophysical Society & EXPOGEF. August 3-6, 2015. Rio de Janeiro, Brazil. Link: https://doi.org/10.1190/sbgf2015-228    
  6. Interpretação Sísmica na Área Sul da Bacia do São Francisco e correlação com a Área Norte. Vinicius Carneiro Santana, Jose Luís Huerga, Esteban A. Sabogal, Paulo A. S. Vidigal, Michael Holz. 14th International Congress of the Brazilian Geophysical Society & EXPOGEF. August 3-6, 2015. Rio de Janeiro, Brazil. Link: https://doi.org/10.1190/sbgf2015-011  
  7. Stratigraphic architecture of the Colombia, Sinú Offshore and Sinú-San Jacinto basins applying principles of sequence stratigraphy. PhD thesis in Geophysics. Universidade Federal da Bahia (UFBA). February, 2015. Salvador, Bahia, Brazil.   
  8. Stratigraphic relationships between the Colombian, Sinú Offshore and Sinú-San Jacinto basins based on seismic stratigraphy. Alfaro, E., Holz, M. October, 2014. Vol. 44, no. 4, pp. 607-625. Brazilian Journal of Geology. Link: https://www.scielo.br/j/bjgeo/a/kWNcZbR8Skd3p6q7NrsFBDt/abstract/?lang=en    
  9. Seismic geomorphology and stratigraphy of marine depositional systems controlled by tectonics (South Caribbean) and implications for hydrocarbon exploration. Alfaro, E., Holz, M. VI Simpósio Brasileiro de Geofísica. Oral presentation. October 14-16, 2014. Porto Alegre, Rio Grande do Sul, Brazil.    
  10. Application of 3D seismic attributes and seismic geomorphology on a slope system of the southern Colombian Caribbean margin. Alfaro, E., Holz, M. VI Simpósio Brasileiro de Geofísica. Poster presentation. October 14-16, 2014. Porto Alegre, Rio Grande do Sul, Brazil.     
  11. Influência do processamento sísmico e da geologia na interpretação sísmica – Estudo de caso no bacia do São Francisco. Vidigal, P. A., Cruz, D. S., Huerga, J. L., Carneiro, V., Alfaro, E., Oliveira, U., Bahia, B., Holz, M. 47º Congresso Brasileiro de Geologia, September 21-26, 2014. Salvador, Bahia, Brazil.     
  12. Application of 3D seismic attributes and seismic geomorphology on a slope system of the southern Colombian Caribbean margin. Alfaro, E., Holz, M. 47º Congresso Brasileiro de Geologia. Oral presentation. September 21-26, 2014. Salvador, Bahia, Brazil.   
  13. Review of the chronostratigraphic charts in the Sinú-San Jacinto Basin based on new seismic stratigraphic interpretations. Alfaro, E., Holz, M. September, 2014. Vol. 56, pp. 139-169. Journal of South American Earth Sciences. Link: https://doi.org/10.1016/j.jsames.2014.09.004    
  14. Seismic geomorphology and stratigraphy of marine depositional systems controlled by tectonics (South Caribbean) and implications for hydrocarbon exploration. Alfaro, E., Holz, M. 17th Annual AAPG/SEG Student Expo. Poster presentation. September, 2014. Houston, Texas,United States of America.     
  15. Seismic Geomorphological Analysis of Deepwater Gravity-driven Deposits on a Slope System of the southern Colombian Caribbean Margin. Alfaro, E., Holz, M. June, 2014. Vol. 57, pp. 294-311. Marine and Petroleum Geology. Link: https://doi.org/10.1016/j.marpetgeo.2014.06.002     
  16. Diachronic Cenozoic wrenching in southwest of Colombian basin. Alfaro, E., Barrera, D., Rossello, E. June, 2013. Vol 100, 1 pp. 55-65. Comunicações Geológicas. Portugal. Link: https://www.lneg.pt/wp-content/uploads/2020/03/7_ART_CG13_reverPORT_lu.pdf    
  17. Diachronic Cenozoic wrenching and an Eocene unconformity in southwest of the Colombian basin. Alfaro, E., Barrera, D., Rossello, E. International Exposition and Eighty-Two Annual Meeting The Society of Exploration Geophysicists, SEG. Oral presentation. November, 2012. Las Vegas, Nevada, United States of America. Link: https://doi.org/10.1190/segam2012-0313.1  
  18. Seismic geomorphology of Pliocene-Holocene in the southern zone of the Caribbean Sinú-Offshore from application of 3D seismic attributes. Master of Sciences thesis in Earth Sciences. Universidad EAFIT. November, 2010. Medellín, Colombia.      
  19. North Viking Graben, North Sea: an exploration potential project. Annual Convention of the American Association of Petroleum Geologists (AAPG). Oral presentation. April 2010, New Orleans, United States of America.      
  20. Subsidence and Tectonic Inversion in the North and West of the Colombian Basin. Alfaro, E., Barrera, D. Workshop Circum-Caribbean and North Andean tectonomagmatic evolution: impacts on paleoclimate and resource formation. Oral presentation. September 2-4, 2009. Cardiff, Wales, United Kingdom. Link: http://www.ugr.es/~agcasco/igcp546/Cardiff09/Cardiff_09_Abstract_volume.pdf    
  21. Subsidencia y ambiente tectónico en la zona noroeste de la Cuenca Colombia en el intervalo Eoceno-Mioceno. Alfaro, E., Barrera, D., Naranjo, M., Jaimes, N., Moncada, A., Monsegny, J., Agudelo, W. X Simposio Bolivariano de Cuencas Subandinas. Oral presentation. July 26-28, 2009. Cartagena, Colombia. Link: https://archives.datapages.com/data/meta/colombia_acggp/simp10/28_firstpage.pdf      
  22. Analysis of tectonic subsidence of the Colombian Basin, Caribbean Sea. Alfaro, E., Ojeda, G. Y. International Exposition and Seventy-Eighth Annual Meeting (The Society of Exploration Geophysicists, SEG). Poster presentation. November 9-14, 2008, Las Vegas, Nevada,  United States of America. Link: https://doi.org/10.1190/1.3063793    
  23. Seismic stratigraphy in the Colombian Caribbean offshore near to Cartagena wells. Bachelor thesis in Geology. Universidad Industrial de Santander (UIS). August, 2008. Bucaramanga, Colombia    
  24. Identification of seismic reflectors in seismic image applying syntactic pattern recognition. Pérez, C., Alfaro, E. International Congress of Conventional and Unconventional Hydrocarbon Resources/ III Oil & Gas Investment Conference.  Poster presentation. February 4-8, 2008, Cartagena, Colombia     
  25. Library of Functions for MATLAB, according to formal languages theory. Pérez, C., Alfaro, E. VI Simposio Nororiental de Matemáticas. Oral presentation. December 10-14, 2007, Bucaramanga, Colombia.



Sebastian Rios Sabogal

I am a Software Engineer who graduated from Universidad del Valle in Cali, Colombia. I am also a volunteer who supports open software, knowledge, data, and technologies.

With over 9 years of experience in roles such as Backend Developer, Frontend Developer, Fullstack Developer, and Data Engineer in the software industry.

Over the past 3 years, I have made significant contributions to the construction and implementation of a low-cost air quality monitoring network in Cali, Colombia, in collaboration with the Tangara community and the Chispa NGO.

Currently, my interests are focused on Big Data, Data Engineering, Data Science, Machine Learning, Image Processing, and Governance.




Sonia Marleni Sabogal Pedraza

Profesora jubilada (desde 2020), de la Escuela de Matemáticas de la UIS

Licenciada con estudios principales en matemáticas.  Universidad Pedagógica Nacional.  Bogotá, 27 de enero de 1984.

Magister Scientiae, Matemáticas.  Universidad Nacional de Colombia.  Bogotá, 22 de septiembre de 1988. Trabajo de grado: Propiedades de Separación y Extensiones Topológicas n-puntuales. Bogotá.

Doctorado en Ciencias Matemáticas.  Universidad Nacional de Colombia.  Bogotá, 15 de septiembre de 2000.  Tesis: Autosemejanza en Topología y Algunas Extensiones de la Dualidad de Stone.

Áreas de interés: Topología, Geometría Fractal, Álgebra.




Rafael Isaacs

Soy matemático, magister en matemáticas con estudios de doctorado todo de la UNAL, 45 años de profesor en la UIS, mis áreas más cultivadas son la teoría de autómatas y la geometría fractal.



Nicolás Andrés Ramírez Calderón 

Estudiante de Ingeniería de a Sistemas y Computación de la Universidad Industrial de Santander. Experiencia en aprendizaje y proyectos de programación con lenguajes como Python, Java y C. 

Interesado en investigación y aplicación de aprendizaje profundo y redes neuronales.



Allan Cifuentes

Geoscientist with 12+ years of Formation Evaluation. Experienced in topics which include Mature fields, Heavy Oil, Conventional and Unconventional reservoirs across Latin America. I participated in supporting projects for drilling O&G horizontal and directional wells. I also have experience in data management, technical reports and developing projects.

Áreas de inteŕes: Física de rocas y petrofísica



Francisco Gamboa

Francisco Gamboa Ortega is a physicist from the Industrial University of Santander (UIS-Colombia), where he graduated in 2008. He worked at the Colombian Petroleum Company (Ecopetrol) from 2008 to 2010, where he was responsible for the seismic acquisition project in the Tenerife field, Barrancabermeja. In August 2010, he began his Master’s in Geophysics at the Federal University of Bahia (UFBA) in Salvador, Brazil, and completed it in September 2012. He participated in the INCT-GP project (National Institute of Science and Technology in Petroleum and Gas Geophysics), where he received a master’s scholarship from CAPES (Comissão de Aperfeiçoamento de Pessoal do
Nível Superior). Currently, he has defended his doctoral thesis in geophysics at UFBA. His areas of interest in Exploration Geophysics include data processing, inversion, and seismic anisotropy. He is
versatile and has experience using various types of software. Francisco is a hardworking individual, capable of both fieldwork and office tasks. He is well-suited for teamwork, open research, and
enthusiastic about pursuing a career in the oil and gas industry or as a professor. Francisco Gamboa has strong computer skills that allow him to navigate and effectively use digital technologies, increase productivity, and solve complex problems. In addition, his adaptability, problem-solving skills, and commitment to continuous learning are important traits that complement his solid computer skills, enabling him to stay up-to-date with technological advancements and contribute effectively in various professional environments.








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Experimenting with different metrics

Non-convex balls By: Esteban Alfaro Sabogal Date: 06 august 2023 We are going to draw computationally the points that are a distance < r ...