Jakub NowosadAug 20, 2023

New NLCD products for the year 2021 are now available, and starting from 2024, there will be a new land cover product for the conterminous United States at 30-meter spatial resolution and on an annual time step for the years 1985-2023.

Read more at https://www.usgs.gov/centers/eros/news/nlcd-2021-now-available

#gischat #gisdata #landcover

NLCD 2021 Now Available | U.S. Geological Survey

The U.S. Geological Survey (USGS), in association with the Multi-Resolution Land Characteristics (MRLC) Consortium, is pleased to announce the completion and release of the latest epoch of the National Land Cover Database (NLCD) for the conterminous U.S.—NLCD 2021.

Census State Data CentersMay 25, 2023
This week we enjoyed wonderful data-centric content at the 2023 TX Demographic Conference, and our very own Richard Wade, Gayla Mullins, & Joe Sepulveda presented on @TNRIS’ services and data offerings. Thank you @TexasDemography for a great event! #txgis #gisdata #opendata https://t.co/lCuynvjUXI
TNRIS on Twitter

“This week we enjoyed wonderful data-centric content at the 2023 TX Demographic Conference, and our very own Richard Wade, Gayla Mullins, & Joe Sepulveda presented on @TNRIS’ services and data offerings. Thank you @TexasDemography for a great event! #txgis #gisdata #opendata”

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💧🌏 Greg CocksJan 10, 2023
Geologic Map Of The Source Region Of Shalbatana Vallis, Mars
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https://doi.org/10.3133/sim3492 <-- publication
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https://pubs.usgs.gov/sim/3492/sim3492_pamphlet.pdf <-- phamplet
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https://pubs.usgs.gov/sim/3492/sim3492_sheet.pdf <-- high resolution map
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https://pubs.usgs.gov/sim/3492/sim3492_XantheTerra_GISFiles.zip <-- GIS files for download
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#GIS #spatial #mapping #gischat #map #Mars #solarsystem #elevation #geology #geomorphology #XantheTerra #download #GISData #opendata #landforms #geologicmapping #geological #hydrology #water #flood #flooding #extraterrestrial #remotesensing #THEMIS #satellite #orbiter
#USGS
Geologic map of the source region of Shalbatana Vallis, Mars

Xanthe Terra is a high-standing cratered plain located southeast of Lunae Planum and south of Chryse Planitia in the western equatorial region of Mars. It contains landforms shaped by diverse geologic processes, including various scales of channels and valleys, chaotic terrains, delta fan deposits, and landslides. An extensive outflow channel system is located within Xanthe Terra and the surrounding circum-Chryse region, including Shalbatana and Ravi Valles, thought to have formed by catastrophic flooding during the Hesperian to Amazonian Periods. The study region within Xanthe Terra is defined by Mars Transverse Mercator (MTM) quadrangles 00042 and 00047 (2.5° to −2.5° N, 310° to 320° E) and includes Orson Welles crater (124.5 km diameter, the source region for Shalbatana Vallis), the southernmost portion of Shalbatana Vallis, Aromatum Chaos (the source region for Ravi Vallis), the westernmost portion of Ravi Vallis, and the source area of Nanedi Valles. The Mars Odyssey Thermal Emission...

Show threadBenjamin HennigNov 16, 2022
And some more (>500!) free GIS data sources collected by Robin Wilson http://freegisdata.rtwilson.com/ @geography #GIS #data #GISdata #geography
Free GIS Datasets - Categorised List