{ "132426-21870910": { "datetime_modified":"20250214T120030", "datetime_start":"20250214T153000", "datetime_end":"20250214T163000", "has_end_time":1, "date_start":"2025-02-14", "date_end":"2025-02-14", "time_start":"15:30:00", "time_end":"16:30:00", "time_zone":"America\/Detroit", "event_title":"Molly Kawahata Climate Change Lecture", "occurrence_title":"", "combined_title":"Molly Kawahata Climate Change Lecture", "event_subtitle":"", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Are you anxious about climate change? Come explore the transformative power of hope with Molly Kawahata. Molly is the former climate advisor to the Obama White House, and an award-winning speaker, strategist, ice climber. She is the founder of Systemic Impact Strategies, a consultancy that specializes in implementing the science of hope across communications, organizational development, and social impact initiatives. Her expertise centers around utilizing the science of hope as a catalyst for positive change.Register for free here:\u00a0https:\/\/docs.google.com\/forms\/d\/e\/1FAIpQLSeyWon2a2hyCpXmVDTeg9vbKyxdnRBoj6QJwurZRffwCHXBPw\/viewformThere will be a chance to win a box of Mindo chocolates at the event!", "occurrence_notes":null, "guid":"132426-21870910@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/132426", "building_id":"", "building_name":"", "campus_maps_id":"", "room":"", "location_name":"Rackham Amphitheater", "has_livestream":0, "cost":"", "tags":[], "website":"https:\/\/maizepages.umich.edu\/event\/11029306", "sponsors":[ { "group_name":"Maize Pages Student Organizations", "group_id":"2390", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "styled_images":{ "event_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_thumb\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_large":"https:\/\/events.umich.edu\/media\/cache\/event_large\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_large_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_2x\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/event_large_lightbox\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "group_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "group_thumb_square":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_thumb_square\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "group_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "group_large_lightbox":"https:\/\/events.umich.edu\/media\/cache\/resolve\/group_large_lightbox\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_large_crop":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_large_crop\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_list":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_list\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_list_2x":"https:\/\/events.umich.edu\/media\/cache\/event_list_2x\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_grid":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_grid_2x":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_grid_2x\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_feature_large":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_large\/media\/attachments\/2025\/02\/event_132426_original-35.jpg", "event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/resolve\/event_feature_thumb\/media\/attachments\/2025\/02\/event_132426_original-35.jpg" }, "occurrence_count":1, "first_occurrence":21870910 } , "131315-21868168": { "datetime_modified":"20250120T144903", "datetime_start":"20250214T153000", "datetime_end":"20250214T163000", "has_end_time":1, "date_start":"2025-02-14", "date_end":"2025-02-14", "time_start":"15:30:00", "time_end":"16:30:00", "time_zone":"America\/Detroit", "event_title":"Molly Kawahata to speak at U-M on the transformative power of hope in fighting climate change", "occurrence_title":"", "combined_title":"Molly Kawahata to speak at U-M on the transformative power of hope in fighting climate change: \u201cA Hopeful Horizon for Climate Action: Bridging Communications, Cognition, and the Science of Hope\u201d", "event_subtitle":"\u201cA Hopeful Horizon for Climate Action: Bridging Communications, Cognition, and the Science of Hope\u201d", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"The Global CO2 Initiative and its affiliated student organization, Michigan Carbon Capture, are excited to welcome Molly Kawahata to the stage at the University of Michigan on Friday, February 14, 2025. Molly will speak about the transformative power of hope in the fight against climate change. The talk, \u201cA Hopeful Horizon for Climate Action: Bridging Communications, Cognition, and the Science of Hope,\u201d is free and open to the public, but attendees must sign up.\r\n\r\nPlease visit the Global CO2 Initiative website for more information. \r\n\r\nThis event is made possible from the support of generous University of Michigan partners: School for Environment and Sustainability, Erb Institute, LSA Sustainability, Student Life Sustainability, Recreational Sports, Matthaei Botanical Gardens & Nichols Arboretum, Center for Sustainable Systems, Planet Blue Ambassador, Graham Sustainability Institute, and College of Engineering.", "occurrence_notes":null, "guid":"131315-21868168@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/131315", "building_id":"1000172", "building_name":"Rackham Graduate School (Horace H.)", "campus_maps_id":"71", "room":"Amphitheatre", "location_name":"Rackham Graduate School (Horace H.)", "has_livestream":0, "cost":"", "tags":["anxiety","climate","Climate Change","Environment","Free","Psychology","Rackham","Sustainability","Talk","Well-being"], "website":"https:\/\/www.globalco2initiative.org\/events\/", "sponsors":[ { "group_name":"Global CO2 Initiative", "group_id":"5002", "website":"https:\/\/www.globalco2initiative.org\/" }, { "group_name":"Erb Institute \/ Ross Business School and School for Environment & Sustainability", "group_id":"1054", "website":"" }, { "group_name":"Center for Sustainable Systems", "group_id":"1062", "website":"" }, { "group_name":"Matthaei Botanical Gardens & Nichols Arboretum", "group_id":"1072", "website":"" }, { "group_name":"Michigan Engineering", "group_id":"1151", "website":"" }, { "group_name":"Department of Michigan Recreation", "group_id":"1174", "website":"http:\/\/www.recreation.umich.edu" }, { "group_name":"School for Environment and Sustainability SEAS", "group_id":"1199", "website":"" }, { "group_name":"Graham Sustainability Institute", "group_id":"1807", "website":"http:\/\/graham.umich.edu" }, { "group_name":"School for Environment and Sustainability", "group_id":"3454", "website":"https:\/\/www.facebook.com\/UMichSEAS\/" }, { "group_name":"University of Michigan Mechanical Engineering", "group_id":"3539", "website":"" }, { "group_name":"Department of Psychology", "group_id":"3615", "website":"http:\/\/www.lsa.umich.edu\/psych\/" }, { "group_name":"Planet Blue Ambassadors", "group_id":"4176", "website":"https:\/\/pba.umich.edu\/" }, { "group_name":"Student Life Sustainability", "group_id":"4678", "website":"" }, { "group_name":"LSA Sustainability", "group_id":"5068", "website":"http:\/\/sustainable-lsa.umich.edu\/" }, { "group_name":"Michigan Carbon Capture", "group_id":"5290", "website":"" } ], "image_url":"https:\/\/events.umich.edu\/media\/attachments\/2025\/01\/event_131315_original-1.jpeg", "styled_images":{ 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"event_feature_thumb":"https:\/\/events.umich.edu\/media\/cache\/event_feature_thumb\/media\/attachments\/2025\/01\/crop-event_131315_original-1.jpeg" }, "occurrence_count":1, "first_occurrence":21868168 } , "123477-21850979": { "datetime_modified":"20250212T100143", "datetime_start":"20250214T153000", "datetime_end":"20250214T163000", "has_end_time":1, "date_start":"2025-02-14", "date_end":"2025-02-14", "time_start":"15:30:00", "time_end":"16:30:00", "time_zone":"America\/Detroit", "event_title":"Smith Lecture - Sydney Gable, Cameron Tripp, Yiruo Xu", "occurrence_title":"", "combined_title":"Smith Lecture - Sydney Gable, Cameron Tripp, Yiruo Xu: EARTH grad student mini talks", "event_subtitle":"EARTH grad student mini talks", "event_type":"Lecture \/ Discussion", "event_type_id":"13", "description":"Join us for this week's Smith Lecture as three of our own grad students will be giving mini talks. See below for info on each lecture:\r\n\r\nSpeaker 1: Sydney Gable\r\nTitle: Temporal and Spatial Variations in b-Value for Foreshock Sequences in Southern California\r\nAbstract: Our current understanding of seismic hazard relies heavily on a parameter known as the b-value, which describes the relative proportion of small to large earthquakes in a catalog, and is routinely used in probabilistic seismic hazard assessments to estimate magnitude exceedance probabilities over a long time-span. Recent studies have suggested that fine-scale spatial and temporal variations in the b-value may be used to describe short-term behavior of an earthquake sequence (Gulia and Weimer 2019) particularly during the foreshock period. While the b-value variations of several large earthquake sequences have already undergone thorough investigation, smaller earthquake sequences have not been analyzed systematically.\r\n\r\nIn this work, we re-estimate earthquake magnitude using a relative amplitudes method which standardizes magnitude measurement for earthquake foreshock sequences. Additionally, we employ the b+ method for b-value estimation to reduce bias due to short-term incompleteness (van der Elst 2021). We apply this methodology to several earthquake foreshock sequences with moderately sized manshocks (~M 4.0 - 5.5) in Southern California and compare the spatial and temporal variations b-value. This allows us to assess the utility of using fine-scale variations in b-value as a proxy for short term hazard analysis and identify spatio-temporal trends that may shed light on the processes of foreshock evolution.\r\n\r\nSpeaker 2: Cameron Tripp\r\nTitle: Evaluating Ba\/Ca as an Upwelling Tracer in Gal\u00e1pagos Porites lobata Corals\r\nAbstract: In the Gal\u00e1pagos Islands, strong seasonal upwelling transports cold, nutrient-rich deep waters to the surface ocean. Local sea surface temperatures (SST) fluctuate as a function of upwelling intensity, while interannual shifts in this dynamical pattern influence the El Ni\u00f1o Southern Oscillation. The Gal\u00e1pagos phytoplankton stock, supporting a uniquely diverse marine ecosystem, depends upon upwelled nutrient supply. With no long-term, direct measure of Gal\u00e1pagos upwelling, we rely on proxy data to track its behavior over time. Prior analyses established empirical links between lattice-bound barium (Ba\/Ca) in scleractinian coral samples and the abundance of Ba 2+ in the coral environment. Ba 2+ accumulates in the deep ocean through passive inclusion in organic matter and the biological pump mechanism. Barium substitution in\r\ncoral aragonite suggests Ba 2+ enrichment in the surface ocean, facilitated by upwelling. This relationship has informed several upwelling reconstructions via Ba\/Ca.\r\nDocumented impacts of temperature, calcification rate, and coral physiology on barium substitution complicate these reconstructions. Further, terrestrial sources of Ba 2+ can override the upwelling signal. To isolate the influence of these conflating factors in the Gal\u00e1pagos upwelling region, we generated 10 novel Ba\/Ca records from modern and fossil coral skeletons \u2013 the largest assemblage from this area to date. Paired Sr\/Ca records isolate the thermal upwelling signal, enabling direct comparison. Considering temperature and extraneous factors such as location, age, and coral extension rate, we evaluate Ba\/Ca fidelity to the local upwelling pattern. The data reveal consistently weak relationships between Ba\/Ca and the thermal upwelling signature.\r\n\r\nAdditionally, mean barium concentrations vary significantly between cores, increasing in records with lower extension rates and closer proximity to basal aquifers. The inverse relationship to extension matches a kinetic model of Rayleigh fractionation identified in prior studies. Elevated mean values are not intrinsically linked to Ba\/Ca disagreement with the thermal upwelling signal, but low extension rates are associated with both features. These findings challenge present understanding of coral Ba\/Ca as a paleo-upwelling tracer.\r\n\r\nSpeaker 3: Yiruo Xu\r\nTitle: \"Did Archean metamorphic terranes cool slower? Insights from garnet diffusion studies on the Superior Province\"\r\nAbstract: Archean metamorphic terranes are traditionally suggested to have cooled significantly slower than their Phanerozoic counterparts. Many have argued that this contrast in metamorphic timescale reflects changes in Earth\u2019s tectonic regime. However, diffusion chronometry-based cooling rate data on Precambrian rocks are very limited. We present case studies of metamorphic timescales on the Superior Province, one of Earth's largest Archean craton. We combine conventional thermobarometry and phase-equilibrium modeling to constrain the peak temperatures and pressures and estimate metamorphic cooling rates from major element diffusion in garnet. The resulting cooling rates exhibit large variability, with the fastest estimates comparable to those from the Phanerozoic eon and the lowest rates slower by two orders of magnitude. We then discuss the uncertainties and potential biases in determining diffusion timescales. The results complicate the conventional idea of slow-cooling Precambrian orogens. Careful evaluation of the geologic context of individual cooling rate data and more targeted diffusion studies are necessary to address the question of long-term change in tectonics.", "occurrence_notes":null, "guid":"123477-21850979@events.umich.edu", "permalink":"http:\/\/events.umich.edu\/event\/123477", "building_id":"1000188", "building_name":"1100 North University Building", "campus_maps_id":"628", "room":"1528", "location_name":"1100 North University Building", "has_livestream":0, "cost":"", "tags":["Lecture"], "website":"", "sponsors":[ { "group_name":"Earth and Environmental Sciences", "group_id":"3170", "website":"http:\/\/www.lsa.umich.edu\/earth" } ], "image_url":"", "styled_images":{ "event_thumb":"", "event_large":"", "event_large_2x":"", "event_large_lightbox":"", "group_thumb":"", "group_thumb_square":"", "group_large":"", "group_large_lightbox":"", "event_large_crop":"", "event_list":"", "event_list_2x":"", "event_grid":"", "event_grid_2x":"", "event_feature_large":"", "event_feature_thumb":"" }, "occurrence_count":1, "first_occurrence":21850979 } }