Nebraska’s Wide, Rolling Domain

https://fed.brid.gy/r/https://science.nasa.gov/earth/earth-observatory/nebraskas-wide-rolling-domain/

#geologists I'm doing a #bicycle trip of Lake Huron and the Bruce Peninsula in #Ontario latter in the summer. Looking for a #geology book like 'Roadside geology of New York', any suggestions, but for the area.
I find that when I #cycle I get interested in #topography for obvious reasons. #science #rocks

Late Miocene Euphrates River Drained Into A Partially Desiccated Eastern Mediterranean
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https://doi.org/10.1038/s41561-026-01962-x <-- shared paper
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[the paleogeographic reconstruction is outstanding, including the strength and information conveyed so well in that figure, kudos!]
H/T @lina Jakaitė-Darkšė
“Although the Euphrates River - stretching ~3,000 km across Western Asia - has shaped the region’s geology for millions of years, the timing of its origin and the evolution of its course remain enigmatic. So far, two contrasting hypotheses have been proposed to explain the fluvial system’s Late Neogene path: termination in Anatolia at a palaeo-lake or the Mediterranean, or a southeastward continuation to Arabia. Here [they] use seismic-reflection and topographic data to show that two previously identified sedimentary accumulations - deposited during the terminal phase of the Late Miocene Messinian salinity crisis - resulted from dual riverine systems that drained into a partially desiccated eastern Mediterranean before avulsing toward the Persian Gulf and converging to form the modern Euphrates River. From probabilistic sediment-budget modelling, [they] show that although the latest Messinian drainage basins were an order of magnitude smaller than their present-day extents, the total palaeo-discharge exceeded that of the modern Tigris, Euphrates and Nile rivers combined, indicating intense palaeo-precipitation and high palaeo-relief. These results suggest that plate-margin deformation both controlled the fluvial avulsions that diverted the Euphrates River from the Anatolian–Eurasian Plate to the Arabian Plate, and established the conditions necessary for the development of the alluvial Fertile Crescent…”
#water #hydrology #hydrography #paleogeography #Euphrates #river #Miocene #reconstruction #spatialreconstruction #geology #change #erosion #MiddleEast #spatialanalysis #spatiotemporal #Neogene #Anatolia #paleolake #Mediterranean #Arabia #Messinian #remotesensing #model #modeling #topography #hydrogeomorphology #geomorphology #PersianGulf #sediment #paleodischarge #volume #Tigris #elevation #platetectonics #structuralgeology #platemargin #fluvial #avulsion #FertileCrescent

Urban Flood Observations [UFO] - A Hand-Labeled Training And Validation Dataset Of Post-Flood Inundation
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https://doi.org/10.48550/arXiv.2604.23066 <-- shared paper
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https://zenodo.org/records/19698577 <-- shared dataset
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H/T @Rohit Mukherjee
“UFO includes 215 high-resolution PlanetScope image chips and corresponding labels from 14 global flood events, with a focus on urban environments. The labels capture visible surface water in post-flood scenes.
Labeling floods from space is hard, especially in urban areas. Building shadows, narrow channels, wet soil, complex drainage features, and mixed pixels all make it difficult. [They] spent a lot of time refining the labels, and [they] think they can be useful for benchmarking flood-mapping methods and for training flood models (if you have PlanetScope access).
As an initial benchmark, [they have] trained a SegFormer model on the dataset and achieved a mean IoU of 77.3% under leave-one-event-out validation, where each flood event was held out entirely from training…”
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“Urban flooding affects lives and infrastructure worldwide. Mapping inundation in complex urban environments from satellite imagery remains challenging due to limited spatial resolution, infrequent acquisitions, and cloud cover. [They] present Urban Flood Observations (UFO), a global, hand-labeled dataset of post-flood inundation in diverse urban settings. UFO comprises 215 image chips (1024 by 1024 pixels) from 14 flood events between 2017 and 2021, derived from 3 metre PlanetScope imagery. Each chip is annotated with two classes: 'inundated' (all visible surface water, including floodwater and pre-existing water bodies (permanent or seasonal)) and 'non-inundated'. To demonstrate the dataset's utility, [they have] trained a segmentation model using leave-one-event-out cross-validation, achieving a mean Intersection over Union (IoU) of 77.3. [They] also used UFO to evaluate two widely used surface water products, the Sentinel-1-based NASA IMPACT model and Google's 10 m Dynamic World water class, which yielded IoUs of 44.1 and 48.1, respectively. UFO is publicly available to support the development and validation of urban inundation mapping methods…”
#UrbanFloodObservations #Urban #Flood #Observations #flooding #UFO #PlanetScope #remotesensing #GIS #spatial #mapping #opensource #opendata #floodmapping #model #modeling #floodmodels #infrastructure #water #hydrology #extremeweather #hydrography #humanimpacts #cost #economics #risk #hazard #segmentationmodel #elevation #topography #surfacewater #satellite #senteniel #IMPACT #testcases

Climatology And Trends Of Annual Maximum Sub-Daily Precipitation In The Western United States
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https://doi.org/10.1016/j.wace.2026.100915 <-- shared paper
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#USWest #western #usa #rainfall #climatology #spatialanalysis #spatiotemporal #spatial #mapping #precipitation #risk #hazard #flood #flooding #soil #slopes #debrisflow #saturated #monitoring #climatechange #extremeweather #monsoon #intensity #California #publicsafety #infrastructure #flashflooding #massmovement #landslides #engineeringgeology #hydrogeomorpholgy #mudslide #topography #elevation #geomorphmetry #extremerainfall #seasonal #thermodynamic

Ahuachapán and Its Restive Neighbors

https://fed.brid.gy/r/https://science.nasa.gov/earth/earth-observatory/ahuachapan-and-its-restive-neighbors/

🇧🇷 Apresentando esse trabalho de alteração da topografia em malha 90°/45°. O comando pedia movimentação de terra, e como geralmente evito fazer isso, tentei preservar essa identidade com os perfis do terreno natural que ainda aparecem nos planos dos arrimos.

🇬🇧 Presenting this work of changing the topography using a 90°/45° mesh. The briefing required earth movement, and as I usually avoid doing it, I tried to preserve this identity with the profiles of the natural terrain that still appear in the plans of the retaining walls.
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#arquitetura #architecture #urban #urbanism #UnB #universidade #university #uni #maquete #mockup #calunga #topografia #topography #arquiteturadechão