{ "149288-21906196": { "datetime_modified":"20260925T133952", "datetime_start":"20260929T160000", "datetime_end":"20260929T170000", "has_end_time":1, "date_start":"2026-09-29", "date_end":"2026-09-29", "time_start":"16:00:00", "time_end":"17:00:00", "time_zone":"America\/Detroit", "event_title":"Colloquium: Hidden Waves, Universal Spectra: The Garrett\u2013Munk Puzzle", "occurrence_title":"", "combined_title":"Colloquium: Hidden Waves, Universal Spectra: The Garrett\u2013Munk Puzzle: Jalal Shatah, NYU Courant", "event_subtitle":"Jalal Shatah, NYU Courant", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Beneath the ocean\u2019s surface lies a field of internal waves that transports energy and contributes to mixing. Despite widely varying winds, tides, and topography, many observations share a remarkably similar spectral shape, captured by the empirical Garrett\u2013Munk model. Why should such a complicated system admit such a simple description?\n\nThis talk explores that question through a two-dimensional model of rotating, stratified flow. We introduce the wave-turbulence picture of resonant interactions and energy cascades, then show how conservation laws and scaling reduce the search for a turbulent spectrum. A singularity associated with slow waves leads to a crucial role for rotation. Combining analytic arguments with numerical evidence in the weak-rotation regime yields a spectral shape consistent with Garrett\u2013Munk. The talk is intended for a broad mathematical audience; no background in oceanography or wave turbulence is assumed.\n\nJoint work with Michal Shavit and Oliver B\u00fchler.", "occurrence_notes":null, "guid":"149288-21906196@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/149288", "building_id":"1000166", "building_name":"East Hall", "campus_maps_id":"53", "room":"1360", "location_name":"East Hall", "has_livestream":0, "cost":"", "tags":["Mathematics"], "website":"https:\/\/math.nyu.edu\/people\/profiles\/SHATAH_Jalal.html", "sponsors":[ { "group_name":"Colloquium Series - Department of Mathematics", "group_id":"4884", "website":"" }, { "group_name":"Department of Mathematics", "group_id":"3791", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/event_large_2x\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_lightbox\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/event_grid\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/09\/event_149288_original-1.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/09\/event_149288_original-1.jpg" }, "occurrence_count":1, "first_occurrence":21906196 } , "150875-21910346": { "datetime_modified":"20260825T131924", "datetime_start":"20260929T160000", "datetime_end":"20260929T164500", "has_end_time":1, "date_start":"2026-09-29", "date_end":"2026-09-29", "time_start":"16:00:00", "time_end":"16:45:00", "time_zone":"America\/Detroit", "event_title":"FEAST (Faculty Engaged Arts + Student Teams) Info Session", "occurrence_title":"", "combined_title":"FEAST (Faculty Engaged Arts + Student Teams) Info Session", "event_subtitle":"", "event_type":"Workshop \/ Seminar", "event_type_id":"21", "description":"Interested in joining an interdisciplinary arts research team? Join the University of Michigan Arts Initiative for a FEAST Virtual Info Session to learn how students from across U-M can get involved in faculty-led arts research projects.\n\nFEAST (Faculty Engaged Arts + Student Teams) brings together undergraduate and graduate students from different disciplines to collaborate on faculty-led research projects that integrate the arts. Students contribute their own skills and perspectives to an interdisciplinary team while earning course credit for their participation.\n\nLearn more about the program and current projects recruiting here: https:\/\/arts.umich.edu\/feast\n\nDuring this informal session, we\u2019ll introduce the FEAST program, share current research opportunities, explain how to apply and what participation involves, and answer your questions about finding a project that fits your interests.", "occurrence_notes":null, "guid":"150875-21910346@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/150875", "building_id":"null", "building_name":"Off Campus Location", "campus_maps_id":"1", "room":"", "location_name":"Virtual", "has_livestream":1, "livestream_type":"zoom", "livetream_require_login":0, "livestream_id":"982362998522", "livestream_link":"https:\/\/umich.zoom.us\/j\/982362998522", "cost":"", "tags":["Arts Initiative","Funding Opportunities","Graduate Student"], "website":"https:\/\/sessions.studentlife.umich.edu\/track\/event\/session\/112759", "sponsors":[ { "group_name":"Arts Initiative", "group_id":"4583", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2026\/08\/event_150875_original-1.png", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_thumb\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_2x\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2026\/08\/event_150875_original-1.png", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2026\/08\/event_150875_original-1.png", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2026\/08\/event_150875_original-1.png", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2026\/08\/event_150875_original-1.png", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2026\/08\/event_150875_original-1.png", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2026\/08\/event_150875_original-1.png" }, "occurrence_count":2, "first_occurrence":21910346 } }