{"query_echo":{"q":"","filters":{"analysis_type":["geomorphological reconstruction"]},"warnings":[{"code":"facet_value_not_in_vocabulary","message":"Value 'geomorphological reconstruction' for facet 'analysis_type' is not in the controlled vocabulary."}]},"total":{"value":1,"relation":"eq"},"page":1,"page_size":20,"self":"https://climateinsightsdirectory.org/api/v1/search?analysis_type=geomorphological+reconstruction","stability":"beta","ai_marking":{"digital_source_type":{"uri":"http://cv.iptc.org/newscodes/digitalsourcetype/trainedAlgorithmicMedia","name":"Created using Generative AI"},"notice":"Summary and key insights are generated using artificial intelligence."},"results":[{"id":"iai-000017","url":"https://climateinsightsdirectory.org/document/iai-000017","title":"Late Pleistocene-Holocene deltas in southern Buenos Aires Province, Argentina","publisher":{"name":"Inter-American Institute for Global Change Research","organization":"inter-american-institute-for-global-change-research"},"document_type":"research paper","language":"en","date_published":"2025-01-17","source_url":"https://iai.int/es/pub_acad/late-pleistocene-holocene-deltas-in-southern-buenos-aires-province-argentina/","generator":"Climate Insights Directory","generated_fields":["summary","key_insights","climate_tags","geography_discussed","analysis_type"],"summary":{"text":"The research describes the evolution of a 430 km delta front in southern Buenos Aires Province, which was most active around 9,000 calibrated years BP. While the Colorado and Negro rivers once contributed to a large delta system when sea levels were significantly lower, current conditions have left only a minor remnant delta for the Colorado River and an estuary for the Negro River.","ai_generated":true,"unit":"iai-000017#summary","date_modified":"2026-10-23"},"key_insights":[{"text":"The current Colorado Delta is a small remnant of a much larger system that was active starting approximately 10,000 calibrated years BP, when mean sea level was around -30 m.","ai_generated":true,"unit":"iai-000017#insight-1","date_modified":"2026-10-23"},{"text":"A 430 km delta front was formed by the Colorado River, the Negro River, and several now-extinct rivers, with peak sediment and water inputs estimated at 9,000 calibrated years BP when mean sea level was -18 m.","ai_generated":true,"unit":"iai-000017#insight-2","date_modified":"2026-10-23"},{"text":"Sea level fluctuations significantly altered the system: a rise to 6 m above present 6,000 calibrated years BP caused the Colorado and Negro rivers to migrate southward, and a subsequent decrease of 4 mm/yr led to a low of -2 m during the Little Ice Age.","ai_generated":true,"unit":"iai-000017#insight-3","date_modified":"2026-10-23"}],"climate_tags":["sea level rise"],"geography_discussed":["Bahía Blanca Estuary","Anegada Bay"],"frame_perspective":[],"analysis_type":["geomorphological reconstruction"]}]}