{"id":{"repo_id":"texas","oai_identifier":"oai:repositories.lib.utexas.edu:2152/68892"},"canonical_url":"https://search.dev.ndltd.org/etd/texas/oai:repositories.lib.utexas.edu:2152/68892","repository":{"repo_id":"texas","name":"University of Texas","base_url":"https://repositories.lib.utexas.edu/server/oai/request"},"display":{"title":"Earthquakes, groundwater and surface deformation : exploring the poroelastic response to megathrust earthquakes","abstract":"This thesis explores the poroelastic effects of large subduction zone earthquakes using numerical models and a variety of datasets with the overarching goal of beginning to deconvolve post-seismic geodetic deformation signals -- while exploring other interesting phenomena involving the poroelastic response to earthquakes along the way. Chapter 1 sets up an elastic inverse problem used to derive the initial slip condition. We formulate an adjoint-based inversion methodology to solve for the initial condition of the coupled poroelastic forward model within a consistent, finite element framework. Chapter 2 discusses the broad hydrological effects of large subduction zone earthquakes both in general and the predicted hydrological effects of the 2012 7.6 M [sunscript w] Nicoya Peninsula earthquake. It explores how different hydro-mechanical parameters affect both the instantaneous and time-dependent response and touches on some of the limitations of the models. Chapter 3 focuses on the potential effect of poroelastic deformation on post-seismic geodetic signals. Here we look at the relationships between the co-seismic pore pressure changes and different components of poroelastic deformation. It then compares the modeled surface deformation timeseries to the measured deformation at a number of GPS stations. The last chapter walks through the suite of models and data interpolation functions included in the open source toolbox built during this project.","abstract_html":"This thesis explores the poroelastic effects of large subduction zone earthquakes using numerical models and a variety of datasets with the overarching goal of beginning to deconvolve post-seismic geodetic deformation signals -- while exploring other interesting phenomena involving the poroelastic response to earthquakes along the way. Chapter 1 sets up an elastic inverse problem used to derive the initial slip condition. We formulate an adjoint-based inversion methodology to solve for the initial condition of the coupled poroelastic forward model within a consistent, finite element framework. Chapter 2 discusses the broad hydrological effects of large subduction zone earthquakes both in general and the predicted hydrological effects of the 2012 7.6 M [sunscript w] Nicoya Peninsula earthquake. It explores how different hydro-mechanical parameters affect both the instantaneous and time-dependent response and touches on some of the limitations of the models. Chapter 3 focuses on the potential effect of poroelastic deformation on post-seismic geodetic signals. Here we look at the relationships between the co-seismic pore pressure changes and different components of poroelastic deformation. It then compares the modeled surface deformation timeseries to the measured deformation at a number of GPS stations. The last chapter walks through the suite of models and data interpolation functions included in the open source toolbox built during this project.","abstract_has_math":false,"creators":["McCormack, Kimberly Alison"],"institution":"The University of Texas at Austin","degree_name":"Doctor of Philosophy","degree_level":"Doctoral","degree_discipline":"Geological sciences","degree_department":null,"school":null,"contributors":[],"advisors":["Hesse, Marc"],"committee_chairs":[],"committee_members":["Ghattas, Omar","Flemings, Peter","Dixon, Timothy H","Wallace, Laura"],"year":2018,"date_issued":"2018-08-10","date_published":"2018-08-10","updated_at":"2026-07-24T05:01:16Z","subjects":["Poroelasticity","Earthquakes","Post-seismic deformation","Geodetic inversion"],"languages":["en"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["doi:10.15781/T2BR8N160"],"render_values":[{"text":"doi:10.15781/T2BR8N160","href":"https://doi.org/10.15781/T2BR8N160","code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2152/68892","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Hesse, Marc"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Ghattas, Omar","Flemings, Peter","Dixon, Timothy H","Wallace, Laura"]},{"key":"dc:creator","label":"Author","values":["McCormack, Kimberly Alison"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2018-10-12T21:39:51Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2018-10-12T21:39:51Z"]},{"key":"dc:date.issued","label":"Date","values":["2018-08-10"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Geological sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Doctoral"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Doctor of Philosophy"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["The University of Texas at Austin"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Poroelasticity","Earthquakes","Post-seismic deformation","Geodetic inversion"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["doi:10.15781/T2BR8N160"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/2152/68892"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This thesis explores the poroelastic effects of large subduction zone earthquakes using numerical models and a variety of datasets with the overarching goal of beginning to deconvolve post-seismic geodetic deformation signals -- while exploring other interesting phenomena involving the poroelastic response to earthquakes along the way. Chapter 1 sets up an elastic inverse problem used to derive the initial slip condition. We formulate an adjoint-based inversion methodology to solve for the initial condition of the coupled poroelastic forward model within a consistent, finite element framework. Chapter 2 discusses the broad hydrological effects of large subduction zone earthquakes both in general and the predicted hydrological effects of the 2012 7.6 M [sunscript w] Nicoya Peninsula earthquake. It explores how different hydro-mechanical parameters affect both the instantaneous and time-dependent response and touches on some of the limitations of the models. Chapter 3 focuses on the potential effect of poroelastic deformation on post-seismic geodetic signals. Here we look at the relationships between the co-seismic pore pressure changes and different components of poroelastic deformation. It then compares the modeled surface deformation timeseries to the measured deformation at a number of GPS stations. The last chapter walks through the suite of models and data interpolation functions included in the open source toolbox built during this project."]},{"key":"dc:format.mimetype","label":"Dc Format Mimetype","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Earthquakes, groundwater and surface deformation : exploring the poroelastic response to megathrust earthquakes"]}]}],"canonical_facts":{"dc:contributor.advisor":["Hesse, Marc"],"dc:contributor.committeemember":["Ghattas, Omar","Flemings, Peter","Dixon, Timothy H","Wallace, Laura"],"dc:creator":["McCormack, Kimberly Alison"],"dc:date.accessioned":["2018-10-12T21:39:51Z"],"dc:date.available":["2018-10-12T21:39:51Z"],"dc:date.issued":["2018-08-10"],"dc:description.abstract":["This thesis explores the poroelastic effects of large subduction zone earthquakes using numerical models and a variety of datasets with the overarching goal of beginning to deconvolve post-seismic geodetic deformation signals -- while exploring other interesting phenomena involving the poroelastic response to earthquakes along the way. Chapter 1 sets up an elastic inverse problem used to derive the initial slip condition. We formulate an adjoint-based inversion methodology to solve for the initial condition of the coupled poroelastic forward model within a consistent, finite element framework. Chapter 2 discusses the broad hydrological effects of large subduction zone earthquakes both in general and the predicted hydrological effects of the 2012 7.6 M [sunscript w] Nicoya Peninsula earthquake. It explores how different hydro-mechanical parameters affect both the instantaneous and time-dependent response and touches on some of the limitations of the models. Chapter 3 focuses on the potential effect of poroelastic deformation on post-seismic geodetic signals. Here we look at the relationships between the co-seismic pore pressure changes and different components of poroelastic deformation. It then compares the modeled surface deformation timeseries to the measured deformation at a number of GPS stations. The last chapter walks through the suite of models and data interpolation functions included in the open source toolbox built during this project."],"dc:format.mimetype":["application/pdf"],"dc:identifier":["doi:10.15781/T2BR8N160"],"dc:identifier.uri":["http://hdl.handle.net/2152/68892"],"dc:language.iso":["en"],"dc:subject":["Poroelasticity","Earthquakes","Post-seismic deformation","Geodetic inversion"],"dc:title":["Earthquakes, groundwater and surface deformation : exploring the poroelastic response to megathrust earthquakes"],"dc:type":["Thesis"],"thesis:degree_discipline":["Geological sciences"],"thesis:degree_level":["Doctoral"],"thesis:degree_name":["Doctor of Philosophy"],"thesis:institution_name":["The University of Texas at Austin"]},"updated_at":"2026-07-24T05:01:16Z"}