Frozen Soils and the Climate System - NASA Earth Observatory
网页Frozen soil possesses a large apparent heat capacity, consuming or releasing about 80 times the amount of energy in freezing or thawing than is consumed or released by water during heating and cooling.
Frozen Soil - an overview | ScienceDirect Topics
网页Frozen soil refers to soils and rocks with a temperature at or lower than 0 °C and with ice content. It can be divided into artificially frozen soil, seasonally frozen soil, and permafrost based on its life length. AI generated definition based on: Cold Regions Science and Technology, 2013
Frozen Soils - an overview | ScienceDirect Topics
网页Frozen soils are critical components of ecosystem mass and energy balances in dry and cold environments and over 75 % of terrestrial land in the northern hemisphere undergoes seasonally freezing processes (Zhang et al., 1999).
Frozen Soils and the Climate System - Earthdata
网页2000年3月5日 · Frozen soil possesses a large apparent heat capacity, consuming or releasing about 80 times the amount of energy in freezing or thawing than is consumed or released by water during heating and cooling.
Science of Frozen Ground | National Snow and Ice Data Center
网页Frozen ground affects how carbon cycles through an ecosystem. Soil normally releases carbon into the atmosphere. This carbon comes from decaying plant and animal matter in the soil. If frozen soils are cold enough, they will stop releasing carbon, trapping more carbon in frozen ground.
Research progress and prospect of frozen soil ... - ScienceDirect
网页2023年8月1日 · Frozen soil engineering disasters refer to engineering disasters that are caused or induced by frost heave, thaw settlement of frozen soil, which occur in permafrost areas or seasonal frozen soil areas due to changes in environmental temperature conditions.
Frozen Ground & Permafrost - National Snow and Ice Data Center
网页Intermittently frozen ground is near-surface soil that freezes from one to 15 days per year. One-fourth of the land in the Northern Hemisphere has an underground layer that stays frozen all year long. Permafrost is ground that is frozen for at least two years.
Dynamic Properties of Frozen Soils: A Literature Review and …
网页2024年5月3日 · Moreover, artificial ground freezing (AGF), which has been widely used as a method of soil modification in tunneling for subway construction in urban areas, is also another geotechnical application that subjects soils to freezing and freezing-thawing cycles.
Frozen Soil Hydrology - SpringerLink
网页2014年1月1日 · Frozen soil hydrology is a cold climate phenomenon. Approximately 50% of the northern hemisphere experiences frozen soil conditions. Freezing has a profound effect on hydrology in general, but in particular on soils where ice crystals form in soil pores and change the characteristics of the porous medium.
The Unexpected Activity of Frozen Soils: New USGS Research …
网页2021年8月2日 · Newly published research indicates permafrost, or seasonally frozen, soils may be an overlooked source of greenhouse gases (GHG) prior to complete thaw, which could have implications for how thawing of this thick subsurface layer of soil will impact the global carbon budget and how future climate conditions are studied.
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