floods in germany

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This article is a research based primarily on a literature review of the notion of «freedom space» or river territory and its management, both in developed countries and in Latin America and Venezuela. It aims to illustrate new forms of river management as opposed to conventional management and its disadvantages for policy makers and decision makers about the conservation needs of rivers and their territory. First, some previous concepts are discussed, as well as river and ecological dynamics. The application of the concept in other European countries and the description of its characteristics are presented. The space of freedom, also called space of mobility, is the area to be safeguarded to allow the watercourse to maintain its potential for diversion as well as the optimal functioning of the ecosystems. The basic elements of management have been described under a variety of names: in France «Espace d’liberte», in Switzerland «Revitalization space», in the Netherlands «Room for the rivers», among others. The «state of the art» of river management in Latin America is examined. The situation of the Venezuelan fluvial space and the legislation that protects them are presented. Some preliminary considerations are proposed at this level of research.

flash floods

A DANA is «a low-pressure system that manifests itself mainly in the middle and upper layers of the troposphere,» AEMET spokesman Rubén del Campo explains to National Geographic. «To understand its formation, you have to look at the polar jet. This is a current of very intense winds at high levels of the troposphere that circulates from west to east and separates the cold polar air (located north of this current) from the warm tropical air (south of the current).»

Often, «the polar jet undulates, like the meanders of a river, and the undulation is sometimes so intense that the wave itself is strangled and detached from the polar jet: at that moment there is a kind of large pocket of cold air surrounded by warmer air and we already have the DANA formed,» explains del Campo.

Therefore, a DANA is formed when an area with cold air surrounded by warmer air breaks away from the jet stream. These phenomena do not always move eastward like an ordinary squall, but can remain almost stationary for several days, or even move in the opposite direction to the flow.

types of floods

A flood is the occupation by water of areas that are usually free of it,[1] due to the overflowing of rivers, torrents or wadis, torrential rains, snowmelt, tidal surges above the usual level, tidal waves, hurricanes, among others.

Fluvial floods are natural processes that have occurred periodically and have been the cause of the formation of plains in river valleys, fertile lands, meadows and riverbanks, where agriculture has normally developed.

In coastal areas, the onslaught of the sea has served to shape the coasts and create marshy areas such as lagoons and lagoons which, after anthropic occupation, have become vulnerable areas.

There is a fairly close correspondence in most rivers, with respect to the record of gauging in a river basin and the rainfall records obtained in that basin. However, it is necessary to take into account some ideas related to the comparison that can be established between rainfall and flow:

flood meaning

Expected learning: Represent a situation linked to its context through different expressive forms.emphasis: Recreate a significant situation through symbolic and expressive resources of its interior associated to its environment.what are we going to learn?

Expected learning: Solve problems through the formulation and algebraic solution of linear equations.Emphasis: Distinguish and analyze linear variation from its algebraic representation.What will we learn?

You will analyze linear variation from its algebraic representation and thus learn to distinguish it. All this will be the basis so that in the three subsequent lessons you will be able to model a first degree equation for a problematic situation, know the properties of equality and its application, and be able to manipulate the literal without losing the equality of the equation.What do we do?

Expected learning: Explain the relationship between the distribution of relief types, seismic and volcanic regions with the Earth’s internal and external processes.Emphasis: Distinguish the main forms of continental and oceanic relief.What will we learn?

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