{"id":{"repo_id":"uiuc","oai_identifier":"oai:www.ideals.illinois.edu:2142/80773"},"canonical_url":"https://search.dev.ndltd.org/etd/uiuc/oai:www.ideals.illinois.edu:2142/80773","repository":{"repo_id":"uiuc","name":"University of Illinois - Urbana-Champaign","base_url":"https://www.ideals.illinois.edu/oai-pmh"},"display":{"title":"VHF Radar Studies of the Mid-Latitude E-Region Ionosphere From Camp Santiago, Puerto Rico","abstract":"Regarding quasi-periodic layers detected above 100 km in Puerto Rico, our observations show that descending signatures can be explained as the consequence of descending plasma layers that are being dumped at lower E-region altitudes due to the action of gravity waves. Overall, a striking result is the lack of QP echoes in the Puerto Rican sector compared to other mid-latitude observation sites. Finally, we conclude that current QP models contain the right ideas to account for QP signatures, but our data strongly suggest that one model is not sufficient to explain different QP events.","abstract_html":"Regarding quasi-periodic layers detected above 100 km in Puerto Rico, our observations show that descending signatures can be explained as the consequence of descending plasma layers that are being dumped at lower E-region altitudes due to the action of gravity waves. Overall, a striking result is the lack of QP echoes in the Puerto Rican sector compared to other mid-latitude observation sites. Finally, we conclude that current QP models contain the right ideas to account for QP signatures, but our data strongly suggest that one model is not sufficient to explain different QP events.","abstract_has_math":false,"creators":["Urbina, Julio Victor"],"institution":"University of Illinois at Urbana-Champaign","degree_name":"Ph.D.","degree_level":"Dissertation","degree_discipline":"Electrical Engineering","degree_department":null,"school":null,"contributors":["Kudeki, Erhan"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2015,"date_issued":"2015-09-25T20:08:06Z","date_published":"2015-09-25T20:08:06Z","updated_at":"2026-07-22T22:26:14Z","subjects":["Engineering, Electronics and Electrical"],"languages":["eng"],"rights":[],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["(MiAaPQ)AAI3044248"],"render_values":[{"text":"(MiAaPQ)AAI3044248","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/2142/80773","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Kudeki, Erhan"]},{"key":"dc:creator","label":"Author","values":["Urbina, Julio Victor"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2015-09-25T20:08:06Z","10000-01-01","2002"]},{"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":["Engineering, Electronics and Electrical"]}]},{"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/2142/80773","(MiAaPQ)AAI3044248"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Regarding quasi-periodic layers detected above 100 km in Puerto Rico, our observations show that descending signatures can be explained as the consequence of descending plasma layers that are being dumped at lower E-region altitudes due to the action of gravity waves. Overall, a striking result is the lack of QP echoes in the Puerto Rican sector compared to other mid-latitude observation sites. Finally, we conclude that current QP models contain the right ideas to account for QP signatures, but our data strongly suggest that one model is not sufficient to explain different QP events.","Made available in DSpace on 2015-09-25T20:08:06Z (GMT). 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Overall, a striking result is the lack of QP echoes in the Puerto Rican sector compared to other mid-latitude observation sites. Finally, we conclude that current QP models contain the right ideas to account for QP signatures, but our data strongly suggest that one model is not sufficient to explain different QP events.","Made available in DSpace on 2015-09-25T20:08:06Z (GMT). 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