{"687891":{"#nid":"687891","#data":{"type":"event","title":"EAS Specially Invited Speaker - Dr. Samuel Walton","body":[{"value":"\u003Cp\u003EUnderstanding how energy flows from Earth\u2019s radiation belts into the upper atmosphere is a central challenge in geospace science and space weather. In this seminar, I will present recent observational and modeling work aimed at linking magnetospheric drivers, particle transport dynamics, and atmospheric impacts within a unified framework. I will first show how intense wave\u2013particle interactions in the outer radiation belt regulate extreme electron fluxes and loss. I will then introduce a particle tracing model that quantifies low-latitude electron precipitation from the inner radiation belt driven by large-scale electric fields, an important but virtually unexplored source of atmospheric energy input. Finally, I will outline future directions aimed at directly coupling radiation belt variability to ionization, heating, and optical emissions in the upper atmosphere, helping to clarify the physical links between magnetospheric dynamics and atmospheric response.\u003C\/p\u003E\u003Cp\u003E*Refreshments: 1:30 - 2:00 PM (EST L1175)\u003C\/p\u003E","summary":"","format":"limited_html"}],"field_subtitle":"","field_summary":[{"value":"\u003Cp\u003EUnderstanding how energy flows from Earth\u2019s radiation belts into the upper atmosphere is a central challenge in geospace science and space weather. In this seminar, I will present recent observational and modeling work aimed at linking magnetospheric drivers, particle transport dynamics, and atmospheric impacts within a unified framework. I will first show how intense wave\u2013particle interactions in the outer radiation belt regulate extreme electron fluxes and loss. I will then introduce a particle tracing model that quantifies low-latitude electron precipitation from the inner radiation belt driven by large-scale electric fields, an important but virtually unexplored source of atmospheric energy input. Finally, I will outline future directions aimed at directly coupling radiation belt variability to ionization, heating, and optical emissions in the upper atmosphere, helping to clarify the physical links between magnetospheric dynamics and atmospheric response.\u003C\/p\u003E\u003Cp\u003E*Refreshments: 1:30 - 2:00 PM (EST L1175)\u003C\/p\u003E","format":"limited_html"}],"field_summary_sentence":[{"value":"From Radiation Belts to the Upper Atmosphere: Drivers, Dynamics, and Impacts of Energetic Electron Loss"}],"uid":"36678","created_gmt":"2026-02-02 15:47:42","changed_gmt":"2026-02-05 17:28:20","author":"tbuchanan9","boilerplate_text":"","field_publication":"","field_article_url":"","field_event_time":{"event_time_start":"2026-02-10T14:00:00-05:00","event_time_end":"2026-02-10T15:00:00-05:00","event_time_end_last":"2026-02-10T15:00:00-05:00","gmt_time_start":"2026-02-10 19:00:00","gmt_time_end":"2026-02-10 20:00:00","gmt_time_end_last":"2026-02-10 20:00:00","rrule":null,"timezone":"America\/New_York"},"location":"EST L1175","extras":["free_food"],"hg_media":{"679154":{"id":"679154","type":"image","title":"Walton\u0027s Headshot","body":null,"created":"1770052902","gmt_created":"2026-02-02 17:21:42","changed":"1770052902","gmt_changed":"2026-02-02 17:21:42","alt":"Walton\u0027s Headshot","file":{"fid":"263277","name":"Walton---Headshot.jpg","image_path":"\/sites\/default\/files\/2026\/02\/02\/Walton---Headshot.jpg","image_full_path":"http:\/\/hg.gatech.edu\/\/sites\/default\/files\/2026\/02\/02\/Walton---Headshot.jpg","mime":"image\/jpeg","size":235032,"path_740":"http:\/\/hg.gatech.edu\/sites\/default\/files\/styles\/740xx_scale\/public\/2026\/02\/02\/Walton---Headshot.jpg?itok=NaR0p1Yg"}}},"media_ids":["679154"],"related_links":[{"url":"https:\/\/scholar.google.com\/citations?user=YTTMdPwAAAAJ\u0026hl=en","title":""}],"groups":[{"id":"364801","name":"School of Earth and Atmospheric Sciences (EAS)"},{"id":"660370","name":"Space"}],"categories":[],"keywords":[{"id":"175623","name":"EAS Seminar"},{"id":"1925","name":"Electrical and Computer Engineering"}],"core_research_areas":[],"news_room_topics":[],"event_categories":[],"invited_audience":[],"affiliations":[],"classification":[],"areas_of_expertise":[],"news_and_recent_appearances":[],"phone":[],"contact":[],"email":[],"slides":[],"orientation":[],"userdata":""}}}