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Definition
| An aggregate of minerals and rock fragments plus or minus organic material that formed the in situ weathering of rock or sediments |
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| material composed of 80% or more particles smaller than 2 mm |
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| composed of 80% or more particles smaller than about 0.06 mm |
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| conntains 20-80% particles larger than 2mm |
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Definition
| commonly involves two or more of the classes fall, slide, spread, or flow |
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| Produced when solid materials or soil become detached from a steep slope and then fall freely for some distance or bounce and roll down the slope |
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Definition
| Rock falls that invlove the forward rotation of a detached block above a pivotal point located in the lower part of the detached material |
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| AKA SLUMP-when a coherent mass of regolith or bedrock breaks free and then slides down slope along either a planar or curved surface |
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| AKA Slide-When a coherent mass of Regolith or Bedrock breaks free and then slides down slope along either a planar or curved surface. |
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| If the detached landmass slides along a relatively planar surface, the the resulting slump is called translational |
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| A Translational slump in which the detached landmass consists of a single or a few closely related units that move down slope as a relatively coherent mass |
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| When a coherent mass of regolith breaks free from a slope along a curved slip surface, the resulting slump is called rotational |
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| AKA Crescent shaped scarp-As the coherent mass moves down slope along the curved slip surface it rotates downward leaving at its head a crown |
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| The oposite end of a slump in which material may loose coherence and flow slowly down slope as an earthlow |
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Definition
| Spreads which occur on very gentle or flat slopes |
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Definition
| Water saturates fine-grained slope material that liquifies and then runs out, leaving a bowl-shaped depression on the sloping land surface are called earthflows |
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Definition
| Following intense torrential rainfall, or during melting of large amounts of snow or ice, lose regolith on steep slopes may become water-saturated and unstable, and as a result give way flowing down slope accumulating in and moving down ravines and other natural channels as debris flow |
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Definition
| if slopes are covered by water saturaated soils or fine grained sedimentary deposits, then following an intense rainfall or the melting of large amounts of snow and ice, such material may become liquified resulting in a mudflow |
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Definition
| The imperceptible slow and steady down slope movement of Regolith |
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Definition
| In areas of permafrost, this slow imperceptible motion down slope is referred to as solifluction |
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Definition
| The force that causes air masses to flow from areas of high pressure to areas with lower pressure |
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Definition
| In the Northern hemisphere, wind is deflected to the right of its direction of motion, while in the Southern Hemisphere, it is deflected to the left |
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Definition
| Between about 30 degrees N and 30 degrees S |
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Term
| Intertropical Convergence Zone (ICTZ) |
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Definition
| The acension of aiir mass in equatorial regions, some of the descending air masses at the Horse latitudes in both hemispheres are drawn back toward the equator to form the Intertropcial Convergence Zone (ITCZ) |
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Definition
| Moisture free air that reaches the poles it is significantly colder and dryer, and, as a result it descends within a high pressure polar region and then turns and flows back about 60 degrees latitude |
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Definition
| a Secondary circulation feature, is sometimes referred to as a zone of mixing |
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Term
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Definition
| Relatively narrow fast flowing air currents occuring near the tropopause |
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Definition
| Poleward flowing warm moist air is deflected strongly to the right, and thus moves from west to east. |
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Definition
| The fastest flowing portions of the jet stream, i.e. the positions of peak winds in the jets |
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Definition
| when moist air is lifted upwards, rapidly cools into liquid drops of water, resulting in the formation of a tower cumulus cloud |
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Definition
| The amount of energy released as water vapor, a gas, is transformed to a liquid, and thus undergoes a change in state |
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Definition
| When warmed air produced during the cumulus stage continues to rise until it reaches the air that is warmer than it is |
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Definition
| When the thunderstorm is dominated by the downdraft |
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Term
Typhoons-In the Western North Pacific and Philipines
Hurricanes-Atlantic and Eastern Pacific |
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Definition
| Tropical cyclones are warm-core storm systems that form almost exclusively in tropical regions around the globe |
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Definition
| Cyclones like those in the Atlantic commonly begin as a complex of thunderstorms that evolve into Tropical Depressions |
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Definition
| If sustained speeds within the depression reach at least 69 KMPH/ 39 MPH, then it is classified as a Tropical Storm |
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Definition
| The center of the cyclone |
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Term
| Spiral rain bands/ spiral bands |
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Definition
| Radiating outward from the eyewall of a cyclone are bands of clouds that make up spiral rain bands or simply bands |
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Definition
| have sustained winds greater than or equal to 119-153 KMPH/ 74-95 MPH |
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Term
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Definition
| have sustained winds greater than or equal to 154.5 KMPH/ 96-110 MPH |
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Definition
| have sustained winds greater than or equal to 178.6-209 KMPH/111-130 MPH |
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Definition
| have sustained winds greater than or equal to 210.8-249 KMPH/ 131-130 MPH |
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Definition
| have sustained winds greater than or equal to 249 KMPH/ 155 MPH |
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Term
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Definition
| A Mid-Latitude cyclone (or cold-core cyclone) is an area of low pressure lying between 30 degree N and 60 degree S latitude. |
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| What are the two models used to describe the development of mid-latitudinal cyclones |
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Definition
| The Norwegian and Shapiro-Keyser models |
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Term
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Definition
| When the leading edge of polward flowing warm moist air meets and replaces a mass of cold dry air |
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Definition
| Forms when the leading edge of cold dry air meets and replaces a mass of warm moist air |
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Definition
| is when cold and warm fronts meet up |
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| Tropical cyclones form over an ocean in tropical latitudes, and are warmest in their centers |
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Definition
| Mid-latitudinal cyclones form outside the tropics, normally between about 30 degrees N and 60 degrees Slatitude and have a center that is colder than the air surrounding the storm |
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Definition
| The rise of sea level brought on by low pressure, high winds, and large waves as hurricanes, typhoons, and cyclones amke landfall |
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