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The frost line—also known as frost depth or freezing depth—is most commonly the depth to which the groundwater in soil is expected to freeze. The frost depth depends on the climatic conditions of an area, the heat transfer properties of the soil and adjacent materials, and on nearby heat sources.
Nebraska hydrogeology is known through extensive irrigation well drilling for agriculture. In the early 1990s, a USGS study focused on Shelton, Nebraska and the Platte River found Holocene and Pleistocene sand and gravel deposits interbedded with clay and silt between 45 and 100 feet thick, overlying other Quaternary silt deposits between 10 ...
The term itself is borrowed from the notion of "frost line" in soil science, which describes the maximum depth from the surface that groundwater can freeze. Each volatile substance has its own frost line (e.g. carbon monoxide, [ 1 ] nitrogen , [ 2 ] and argon [ 3 ] ), so it is important to always specify which material's frost line is referred ...
The red dotted-to-solid line depicts the average temperature profile with depth of soil in a permafrost region. The trumpet-shaped lines at the top show seasonal maximum and minimum temperatures in the "active layer", which commences at the depth where the maximum annual temperature intersects 0 °C. The active layer is seasonally frozen.
The Rainwater Basin wetland region is a 4,200 sq mi (11,000 km 2) loess plain located south of the Platte River in south-central Nebraska. [1] It lies principally in Adams, Butler, Clay, Fillmore, Hamilton, Kearney, Phelps, Polk, Saline, Seward, and York counties and extends into adjacent areas of southeastern Hall, northern Franklin, northern Nuckolls, western Saline, northern Thayer and ...
Don’t forget to check the local forecast before you hit the road: Snowfall could snarl post-Thanksgiving travel plans as 16 million are under winter alerts across the Great Lakes and the Central ...
English: Relief location map of Nebraska, USA. Geographic limits of the map: N: 43.8° N; S: 39.2° N; ... Add a one-line explanation of what this file represents.
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