{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/81368"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/81368","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"Low-Frequency Subsurface Electromagnetic Modeling","abstract":"Subsurface electromagnetic (EM) methods are applied to obtain underground information that is not available from surface observations. This research develops numerical methods for subsurface electromagnetic modeling. The dissertation includes: (1) fast one-dimensional forward and inverse modeling, which are commonly used in the oil industry, (2) a fast volume integral equation method, which is used to study the electromagnetic wave propagation in axisymmetric inhomogeneous media, and (3) a systematic approach to solving low-frequency scattering problems using the method of moments (MOM). These methods provide important modeling tools for the subsurface exploration.","abstract_html":"Subsurface electromagnetic (EM) methods are applied to obtain underground information that is not available from surface observations. This research develops numerical methods for subsurface electromagnetic modeling. The dissertation includes: (1) fast one-dimensional forward and inverse modeling, which are commonly used in the oil industry, (2) a fast volume integral equation method, which is used to study the electromagnetic wave propagation in axisymmetric inhomogeneous media, and (3) a systematic approach to solving low-frequency scattering problems using the method of moments (MOM). These methods provide important modeling tools for the subsurface exploration.","abstract_has_math":false,"creators":["Chen, Siyuan"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical Engineering","degree_department":null,"school":null,"contributors":["Chew, Weng Cho"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":null,"date_issued":"10000-01-01","date_published":"10000-01-01","updated_at":"2026-07-22T22:26:16Z","subjects":["Geophysics"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI9996621"],"render_values":[{"text":"(MiAaPQ)AAI9996621","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/81368","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Chew, Weng Cho"]},{"key":"dc:creator","label":"Author","values":["Chen, Siyuan"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["10000-01-01","2015-09-25T20:10:45Z","2001"]},{"key":"dc:type","label":"Dc Type","values":["text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Electrical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Dissertation"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Ph.D."]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["University of Illinois at Urbana-Champaign"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Geophysics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/2142/81368","(MiAaPQ)AAI9996621"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Subsurface electromagnetic (EM) methods are applied to obtain underground information that is not available from surface observations. 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This research develops numerical methods for subsurface electromagnetic modeling. The dissertation includes: (1) fast one-dimensional forward and inverse modeling, which are commonly used in the oil industry, (2) a fast volume integral equation method, which is used to study the electromagnetic wave propagation in axisymmetric inhomogeneous media, and (3) a systematic approach to solving low-frequency scattering problems using the method of moments (MOM). These methods provide important modeling tools for the subsurface exploration.","Made available in DSpace on 2015-09-25T20:10:45Z (GMT). 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