3-D Joint Refraction and Reflection Travel-time Tomography of Wide-angle Seismic Data from Colombia-Ecuador Convergent Margin

3-D Joint Refraction and Reflection Travel-time Tomography of Wide-angle Seismic Data from Colombia-Ecuador Convergent Margin

Trabajo final presentado por Pedro Miguel Amaro Buinheira para el Master of Science Degree in Petroleum Engineering del Instituto Superior Técnico de Lisboa, realizado bajo la dirección del profesor Leonardo Azevedo Guerra Raposo Pereira del Instituto Superior Técnico y del Dr. Valentí Sallarès del Institut de Ciències del Mar (ICM-CSIC).-- 66 pages, figures, tables, 2 appendixes

Saved in:
Bibliographic Details
Main Author: Buinheira, Pedro
Other Authors: Azevedo Guerra Raposo Pereira, Leonardo
Format: tesis de maestría biblioteca
Published: Universidade Técnica de Lisboa 2019-10-14
Subjects:3-D Joint Refraction and Reflection Travel-Time Tomography, Wide-angle Seismic Data, Subduction Zones, Tomografia 3-D de tempos de chegada de refraçoes e reflexes agregados, Dados sísmicos de grande amplitude angular, Zonas de subducçao,
Online Access:http://hdl.handle.net/10261/232250
Tags: Add Tag
No Tags, Be the first to tag this record!
id dig-icm-es-10261-232250
record_format koha
spelling dig-icm-es-10261-2322502022-05-26T11:06:05Z 3-D Joint Refraction and Reflection Travel-time Tomography of Wide-angle Seismic Data from Colombia-Ecuador Convergent Margin Buinheira, Pedro Azevedo Guerra Raposo Pereira, Leonardo Sallarès, Valentí 3-D Joint Refraction and Reflection Travel-Time Tomography Wide-angle Seismic Data Subduction Zones Tomografia 3-D de tempos de chegada de refraçoes e reflexes agregados Dados sísmicos de grande amplitude angular Zonas de subducçao Trabajo final presentado por Pedro Miguel Amaro Buinheira para el Master of Science Degree in Petroleum Engineering del Instituto Superior Técnico de Lisboa, realizado bajo la dirección del profesor Leonardo Azevedo Guerra Raposo Pereira del Instituto Superior Técnico y del Dr. Valentí Sallarès del Institut de Ciències del Mar (ICM-CSIC).-- 66 pages, figures, tables, 2 appendixes ESMERALDAS project is a 3-D refraction and wide-angle reflection seismic experiment from 2005 which was conducted in the subduction zone at the border between the Nazca plate and the North Andes plate. The area of experiment covers great part of the 1958 earthquake rupture zone and parts of other large earthquakes in the last 120 years. The rheology and structure of the plates, shear stress distribution, fluids pressure, or thermal structure, etc, have been proposed to play a role in determining dynamic behavior of the rupture. These factors are conditioned, in turn, by the properties of the rocks undergoing deformation during seismic rupture and by the fault geometry and roughness associated to the plates limit. In this work, to the best of my knowledge, it was considered for the first time the combination between wide-angle seismic data with a joint refraction and reflection travel-time tomography code to retrieve a 3-D velocity model of margin and the geometry of the inter-plate boundary, with unprecedented detail. Additionally, most 3-D travel-time tomography tools use only first arrival times to define the velocity field, consequently they do not provide information on the megathrust geometry. In this dissertation, refraction data from previous studies were improved using TOMO3D tool. A 3-D P-wave velocity model was obtained with better statistical results than the previous works. Next step was to include the reflection data to test the TOMO3D joint tomography and to obtain reflector geometry. The results show that combining refracted and reflected phases improves the velocity model, but the geometry of the reflector is still uncertain. The position of the reflector was still good enough to analyze velocities above it, and to check the validity of taking constant rigidity value in the process of earthquake seismic moment calculations. Lateral velocity variations do exist, and they are high enough so that we can talk about the possibility of significant lateral variations of rigidity. The combined effect of a rough inter-plate boundary and heterogeneous elastic properties on earthquake rupture remains to be tested by dynamic rupture models 2021-03-03T06:50:30Z 2021-03-03T06:50:30Z 2019-10-14 2021-03-03T06:50:31Z tesis de maestría http://purl.org/coar/resource_type/c_bdcc http://hdl.handle.net/10261/232250 No open Universidade Técnica de Lisboa CSIC - Instituto de Ciencias del Mar (ICM)
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
topic 3-D Joint Refraction and Reflection Travel-Time Tomography
Wide-angle Seismic Data
Subduction Zones
Tomografia 3-D de tempos de chegada de refraçoes e reflexes agregados
Dados sísmicos de grande amplitude angular
Zonas de subducçao
3-D Joint Refraction and Reflection Travel-Time Tomography
Wide-angle Seismic Data
Subduction Zones
Tomografia 3-D de tempos de chegada de refraçoes e reflexes agregados
Dados sísmicos de grande amplitude angular
Zonas de subducçao
spellingShingle 3-D Joint Refraction and Reflection Travel-Time Tomography
Wide-angle Seismic Data
Subduction Zones
Tomografia 3-D de tempos de chegada de refraçoes e reflexes agregados
Dados sísmicos de grande amplitude angular
Zonas de subducçao
3-D Joint Refraction and Reflection Travel-Time Tomography
Wide-angle Seismic Data
Subduction Zones
Tomografia 3-D de tempos de chegada de refraçoes e reflexes agregados
Dados sísmicos de grande amplitude angular
Zonas de subducçao
Buinheira, Pedro
3-D Joint Refraction and Reflection Travel-time Tomography of Wide-angle Seismic Data from Colombia-Ecuador Convergent Margin
description Trabajo final presentado por Pedro Miguel Amaro Buinheira para el Master of Science Degree in Petroleum Engineering del Instituto Superior Técnico de Lisboa, realizado bajo la dirección del profesor Leonardo Azevedo Guerra Raposo Pereira del Instituto Superior Técnico y del Dr. Valentí Sallarès del Institut de Ciències del Mar (ICM-CSIC).-- 66 pages, figures, tables, 2 appendixes
author2 Azevedo Guerra Raposo Pereira, Leonardo
author_facet Azevedo Guerra Raposo Pereira, Leonardo
Buinheira, Pedro
format tesis de maestría
topic_facet 3-D Joint Refraction and Reflection Travel-Time Tomography
Wide-angle Seismic Data
Subduction Zones
Tomografia 3-D de tempos de chegada de refraçoes e reflexes agregados
Dados sísmicos de grande amplitude angular
Zonas de subducçao
author Buinheira, Pedro
author_sort Buinheira, Pedro
title 3-D Joint Refraction and Reflection Travel-time Tomography of Wide-angle Seismic Data from Colombia-Ecuador Convergent Margin
title_short 3-D Joint Refraction and Reflection Travel-time Tomography of Wide-angle Seismic Data from Colombia-Ecuador Convergent Margin
title_full 3-D Joint Refraction and Reflection Travel-time Tomography of Wide-angle Seismic Data from Colombia-Ecuador Convergent Margin
title_fullStr 3-D Joint Refraction and Reflection Travel-time Tomography of Wide-angle Seismic Data from Colombia-Ecuador Convergent Margin
title_full_unstemmed 3-D Joint Refraction and Reflection Travel-time Tomography of Wide-angle Seismic Data from Colombia-Ecuador Convergent Margin
title_sort 3-d joint refraction and reflection travel-time tomography of wide-angle seismic data from colombia-ecuador convergent margin
publisher Universidade Técnica de Lisboa
publishDate 2019-10-14
url http://hdl.handle.net/10261/232250
work_keys_str_mv AT buinheirapedro 3djointrefractionandreflectiontraveltimetomographyofwideangleseismicdatafromcolombiaecuadorconvergentmargin
_version_ 1777667391668355072

Similar Items