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#spatial

1 post1 participant0 posts today
Public
💧🌏 Greg Cocks

Why Geological Maps Are The Best Investment You’ve Never Heard Of - Investments In Geological Mapping Paid Off Big Time For Americans.
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zmescience.com/science/geology <-- shared opinion piece
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profession.americangeosciences <-- shared technical cost-benefit analysis
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geosociety.org/GSA/gsa/positio <-- shared 2003 GSA appraisal
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[I am, of course, biased in this regard, but I also like well-presented metrics – and use cases being met are my favourite!]
#geology #value #cost #mapping #cartography #cartographic #USA #costbenefit #geologicmapping #metrics #usecase #fedscience #appliedscience #engineeringgeology #spatial #GIS #construction #resources #naturalresources #engineering #risk #hazard #naturaldisasters #payoff #investment #massmovement #groundwater #waterresources #water #hydrology #rareearth #minerals #mining #oilandgas #exploration #underground #money #economics #publicgood #publicvalue #investment

Public
Nils Wilcke

Un chercheur français du CNRS refoulé des Etats-Unis pour avoir exprimé "une opinion personnelle sur la politique menée par Trump". Ce chercheur dans le domaine spatial a subi un contrôle aléatoire à son arrivée à l'aéroport, au cours duquel son ordinateur et son téléphone personnel ont été fouillés. Le FBI a ouvert une enquête contre lui, depuis abandonnée. Les Etats-Unis ne sont plus une démocratie lemonde.fr/international/artic

Le Monde · Etats-Unis : un chercheur français refoulé pour avoir exprimé « une opinion personnelle sur la politique menée par l’administration Trump »By Le Monde avec AFP
#Politique#Trump#Recherche
Public
💧🌏 Greg Cocks

Glacial Lake Mapping Using Remote Sensing Geo-Foundation Model
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doi.org/10.1016/j.jag.2025.104 <-- shared paper
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HIGHLIGHTS:
• Proposed U-ViT model based on Prithvi GFM for multi-sensor glacial lake mapping.
• Achieved an F1 score of 0.894 on Sentinel-1&2, surpassing CNNs scoring below 0.8.
• Maintains strong performance with 50% less training data, proving efficiency.
• Excels in detecting small lakes (<0.01km²) and handling clouds and complex terrains..."
#GIS #spatial #mapping #glaciallake #GeospatialFoundationModel #satellite #Sentinel #GaoFen #remotesensing #earthobservation #model #modeling #climatechange #glacial #glacier #melt #melting #UViT #deepleanring #AI #framework #performance #metrics #opensource

phot - glacier with glacial lake, Karakoram mountain range
Public
💧🌏 Greg Cocks

The Concept Of Indigenous GIS
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Reading a paper (alturl.com/8wte5), they used the specific term ‘Indigenous GIS’ – and I found this intriguing!
As I read it, spatial data collection and analysis was done with a focus on how a tribe or social group might ‘see’ the data, including spatiotemporal....
I look forward to finding out more about what others are working on! – so PLEASE feel free to share any examples that you might have…
#GIS #spatial #mapping #indigenous #IndigineousGIS #FirstNation #perspective #cultural #social #naturalresources #archaeology #publicsafety #socialservices #planning #design #spatialanalysis #spatiotemporal #mapping #cartography #usecase #practical #pragamatic #resultsdriven #focused##

photo - indigeneous favela resident, Brasil
historic photo - Navajo woman carrying peaches, 1902
photo - example of a portion of Maori whanau, New Zealand
map - view sheds for deathscapes, Southern Je, Brazil
Public
💧🌏 Greg Cocks

A Methodology For The Multitemporal Analysis Of Land Cover Changes And Urban Expansion Using Synthetic Aperture Radar (SAR) Imagery - A Case Study Of The Aburrá Valley In Colombia
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doi.org/10.3390/rs17030554 <-- shared paper
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#GIS #spatial #mapping #SyntheticApertureRadar #SAR #remotesensing #multitemporalanalysis #landcover #landcoverchange #clustering #kurtosis #fuzzylogic #kernelbasedmethod #machinelearning #spatialanalysis #spatiotemporal #geostatistics #model #modeling #AburráValley #Columbia #urban #urbanexpansion #population #growth #topography #monitoring #satellite #sentinel #valley #landuse #distribution #infrastructure #building #roads #naturalresources #environmental #conservation #monitoring #multitemporal

photo - looking down into Medellin, Aburrá Valley, Columbia from a surrounding high ground
annotated maps with imagery - Areas of analysis of the results by the SMA1 methodological route and kurtosis. (A). Central Park in Bello (B). Parques del Río Medellín (C). Arkadia Shopping center; (D). Peldar Plant (E). La García water supply reservoir (F). Conasfaltos dam (G). La Ayurá stream basin in Envigado (H). Central Park in Bello (I). Avenida Regional Norte (J). Vía Distribuidora Sur.
schematic / work flow - proposed methodology for analysis of zonal land cover changes
annonated maps - The Aburrá Valley (white line) between the valleys of the Magdalena and Cauca rivers. Data were acquired from ALOS PALSAR Terrain Corrected and data from IGAC.
Public
💧🌏 Greg Cocks

Permafrost Thaw Threatens Up To 3 Million People In The Arctic
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phys.org/news/2025-01-permafro <-- shared technical article
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doi.org/10.1038/s43247-024-018 <-- shared paper
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#GIS #spatial #mapping #arctic #climatechange #permafrost #thaw #communities #impacts #humanimpacts #infrastructure #risk #hazard #northernhemisphere #global #threat #Sweden #greenland #alaska #yukon #russia #canada #norway #landuse #melting #ecosystems #livelihoods #firstnation #indigenous #inhabitants #population #cost #economics #policymaking #planning #management #spatialanalysis #adapation #transportation #supplies #waterquality #watersecurity #foodsecurity #disease #contaminants #multifactor #analysis #MFA #social #culture #cultural #transdisciplinary #ground #temperature #physicalprocesses #consequences #mobility #supplies #biogeochemical #water #hydrology #engineeringgeology #erosion #ecosystem #FATE

schematic - Composite overview synthesizing the risks from permafrost thaw identified across the four study areas
map - Map of the study areas and trends in the ground temperature over the period 2000–2019
photo - A drone picture shows private houses on a territory of former airfield, damaged by thermokarst processes in the village of Churapcha in the Republic of Sakha (Yakutia), Russia September 5, 2021
Permafrost risk analysis workflow diagram
Public
💧🌏 Greg Cocks

Earth's Oceans Are Filled With What Scientists Are Calling ‘Dark Vessels’ | Satellite Mapping Reveals Extensive Industrial Activity At Sea
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earth.com/news/dark-vessels-mo <-- shared technical article
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doi.org/10.1038/s41586-023-068 <-- shared paper
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dialogo-americas.com/articles/ <-- shared opinion piece
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#GIS #spatial #mapping #remotesensing #satellite #illegalfishing #tracking #AI #statesponsored #deeplearning #darkvessels #GPS #transmitters #AIS #turnedoff #maritime #marine #vessels #foodsecurity #sustainability #global #globalsecurity #transponders #smuggling #illegal #commercialfishing #transport #energy #oil #gas #shipping #resources #Sentential #Sentential1 #spatialanalysis #spatiotemporal #realtime #model #modeling #neuralnetwork #accuracy #radar #SAR #cargoship #infrastructure #ocean #worldwide #humanrights #MPAs #coast #coastal #EEZs #tankers #industrial #sea #windfarms

photo - Chinese fishing boats leaving port en masse
maps and charts - The growing footprint of offshore development extends far beyond the fixed infrastructure
maps & charts - About 75% of global industrial fishing and 25% of other vessel activity is not publicly tracked
maps - High-resolution mapping reveals detailed patterns of fishing activity not publicly tracked
Public *
💧🌏 Greg Cocks

Edge Of Mars’ Great Dichotomy Eroded Back By Hundreds Of Kilometres
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arstechnica.com/science/2025/0 <-- shared technical article
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dx.doi.org/10.1038/s41561-024- <-- shared paper
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#GIS #spatial #mapping #planet #Mars #remotesensing #imagery #landsurface #geology #topography #astrogeology #elevation #morphology #martian #geography #marsdichotomy #plateau #lowlands #model #3dmodel #basin #highlands #shoreline #ocean #crust #structuralgeology #chemostratigraphy #morphostratigraphy #geomorphometry #geomorphology #water #hydrology #CaSSIS #HiRISE #stratigraphy #strata #MOLA #laser #LiDAR #MawrthVallis #crater #mound #profile #crosssection #geochemistry #mineralogy #CRISM #CTX #HRSC #DTM #erosion #weathering #spatialanalysis #spatiotemporal

images - Morphological similarities between the stratigraphy in the mounds and the Mawrth Vallis plateau region
3D model, map, images and charts - Chemostratigraphy and morphostratigraphy of a well-exposed mound
3D map and cross section - Three-dimensional view of study area with stacked elevation profiles
image/map - the topography of Mars by the Mars Orbital Laser Altimeter (MOLA)
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💧🌏 Greg Cocks

Mercator Misconceptions - Clever Map Shows the True Size of Countries [Especially In High Latitudes]
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visualcapitalist.com/mercator- <-- shared technical article
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equal-earth.com/ <-- shared Equal Earth map projection details [the poster’s recommended global projection for many use cases]
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[note the ‘true’ size of high latitude landmasses like Greenland and Canada (and Russia as well); note also that the Mercator Projection was not / is not a ‘tool of colonialism’, geopolitics or the like, it was/is ‘simply’ a very clever projection to aid in marine navigation]
#GIS #spatial #mapping #projection #Greenland #Canada #Russia #size #landarea #projection #mapprojection #JustSayNoToGallPeters #equalarea #Mercator #marine #nautical #navigation #spheroid #globe #area #shape #direction #equalearth #Africa #rhomb #rhomblines

map/graphic - Greenland shown on the globe
map - Clever Map Shows the True Size of Countries
map/image - Greenland shown on the globe
map/graphic - Russia shown on the globe
Public
💧🌏 Greg Cocks

USDA 2024 Aerial Imagery Now Available For Download In Texas!🛩️🛰️
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datagateway.nrcs.usda.gov/ <-- shared USDA Geospatial Data Gateway (download the raster aerials here)
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“The USDA has released its 2024 National Agriculture Imagery Program (NAIP) aerial imagery, providing high-resolution, 1-meter data for all 254 Texas counties…
✅ Newly built bridge and highway infrastructure
✅ Stormwater & drainage evaluations (newly built drainage infrastructure)
✅ Right-of-way assessment (environmental analysis)…”
#GIS #spatial #mapping #RemoteSensing #NAIP #USDA #SpatialAnalysis #GISCommunity #AEC #AerialImagery #GISchat #InfrastructurePlanning #CivilEngineering #TransportationPlanning #LandSurveying #EnvironmentalAnalysis #EngineeringInnovation #opendata #Texas #USA #imagery #infrastructure #stormwater #drainage #rightofway #environmental #bridge #highway #planning #management #resource #reference
@USDA @NRCS

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