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  2. Map seed - Wikipedia

    en.wikipedia.org/wiki/Map_seed

    In video games using procedural world generation, the map seed is a (relatively) short number or text string which is used to procedurally create the game world ("map"). "). This means that while the seed-unique generated map may be many megabytes in size (often generated incrementally and virtually unlimited in potential size), it is possible to reset to the unmodified map, or the unmodified ...

  3. Shardmap - Wikipedia

    en.wikipedia.org/wiki/Shardmap

    The cache footprint of the media image of a shardmap is therefore just one disk block per shard. A small fifo on media is easily loaded and converted to an efficient hash table shard on demand. Once in cache, index updates are performed by updating the cached hash table and appending the same entries to the final block of the shard fifo.

  4. Snowflake ID - Wikipedia

    en.wikipedia.org/wiki/Snowflake_ID

    A tweet produced by @Wikipedia in June 2022 [4] has the snowflake ID 1541815603606036480. The number may be converted to binary as 00 0001 0101 0110 0101 1010 0001 0001 1111 0110 0010 00|01 0111 1010|0000 0000 0000, with pipe symbols denoting the three parts of the ID. The first 41 (+ 1 top zero bit) bits convert to decimal as 367597485448.

  5. WOEID - Wikipedia

    en.wikipedia.org/wiki/WOEID

    A WOEID (Where On Earth IDentifier) is a unique 32-bit reference identifier, originally defined by GeoPlanet and now assigned by Yahoo!, that identifies any feature on Earth. [1]

  6. Gelisol - Wikipedia

    en.wikipedia.org/wiki/Gelisol

    Turbels occur primarily in the zone of continuous permafrost. Orthels: soils that show little or no cryoturbation (less than one-third of the depth of the active layer). Patterned ground (except for polygons) generally is lacking. Orthels occur primarily within the zone of discontinuous permafrost, and in alpine areas.

  7. Global Terrestrial Network for Permafrost - Wikipedia

    en.wikipedia.org/wiki/Global_Terrestrial_Network...

    GTN-P program logo. The Global Terrestrial Network for Permafrost (GTN‐P) is the primary international programme concerned with monitoring permafrost parameters. GTN‐P was developed in the 1990s by the International Permafrost Association (IPA) under the Global Climate observing System (GCOS) and the Global Terrestrial Observing System (GTOS), [1] with the long-term goal of obtaining a ...

  8. International Permafrost Association - Wikipedia

    en.wikipedia.org/wiki/International_Permafrost...

    Extent of permafrost in the Northern Hemisphere.. The International Permafrost Association (IPA), founded in 1983, is an international professional body formed to foster the dissemination of knowledge concerning permafrost and to promote cooperation among individuals and national or international organisations engaged in scientific investigation and engineering work related to permafrost and ...

  9. List of impact structures on Earth - Wikipedia

    en.wikipedia.org/wiki/List_of_impact_structures...

    Less than ten thousand years old, and with a diameter of 100 m (330 ft) or more. The EID lists fewer than ten such craters, and the largest in the last 100,000 years (100 ka) is the 4.5 km (2.8 mi) Rio Cuarto crater in Argentina. [2]