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For a rapid to form, a necessary condition is the presence of a gradient, which refers to the river or stream's downward slope. When a river has a larger gradient, the water flows downhill faster. [3] Gradients are typically measured in feet per mile. [4]
The first working group report of the IPCC Sixth Assessment Report – published in 2021 – assessed that the global occurrence of rapid intensification likely increased over the preceding four decades (during the period of reliable satellite data), with "medium confidence" in this change exceeding the effect of natural climate variability and thus stemming from anthropogenic climate change.
The international scale of river difficulty is an American system used to rate the difficulty of navigating a stretch of river, or a single (sometimes whitewater) rapid. [1] The scale was created by the American Whitewater Association to evaluate rivers throughout the world, hence international in the title. [ 2 ]
A rapid deployment force (RDF) is a military formation that is capable of fast deployment outside their country's borders. They typically consist of well-trained military units (special forces, paratroopers, marines, etc.) that can be deployed fairly quickly or on short notice, usually from other major assets and without requiring a large organized support force immediately.
Rapid transit or mass rapid transit (MRT) or heavy rail, [2] [3] commonly referred to as metro, is a type of high-capacity public transport that is generally built in urban areas. A grade separated rapid transit line below ground surface through a tunnel can be regionally called a subway , tube , metro or underground .
Rapid prototyping is a group of techniques used to quickly fabricate a scale model of a physical part or assembly using three-dimensional computer aided design data. [ 1 ] [ 2 ] Construction of the part or assembly is usually done using 3D printing technology.
An official definition of rapid intensification is a gain in strength of 35 mph (56 kph) in 24 hours. Six storms in 2020 rapidly intensified , many of them just before smacking land.
Rapid learning development is now an integral part of the authoring practice worldwide. Some authors and consulting companies focus on how to reach the optimal compromise between the economic need for rapid learning and the pedagogical objective of a good instructional design. [4] Best practice recommendations include: