Human Settlement Development,Highways and India

A settlement is an existence of occupancy for shelter where people live. Settlement is man’s structural transformation towards application to his environment.The study of settlements is largely a product of the twentieth century. A settlement is man’s first step towards adaptation to his environment. Settlement designates an organised colony of human beings, together with their residences and other buildings (shops, hotels, banks etc.), the roads, streets which are used for travel. Settlements are located as advantageously as possible with respect to natural features such as water, fuel, food, protection and drainage and access to transportation and communication.

Human Settlement Development is responsible to facilitate, promote, co-ordinate and manage integrated human settlements, emergency housing, and upgrading of informal settlements. Good transport facilities like highways help in this up gradation.

            Highways work as life lines for the country or the region in which they are located. So, naturally, they have tremendous impact on the settlements located along them. In some cases, the highways are the very ‘raison d’etre’ of the settlement. Precisely these are the reasons of selecting area along Grand Trunk Road for this particular study. Being an old and historic road and being an important highway, Grand Trunk Road has an overwhelming influence on the patterns of settlement located along its course. The settlements along Grand Trunk Road are mainly of linear and rectangular pattern. Checkerboard and amorphous patterns are also found as a result of continuous growth.

Good settlement planning is necessary for a sustainable future of the world. Planning for future needs analysis of past trends, prospects and projection of growth and decay.  Involvement of experts, as well as people, should be sought to develop a model and for this purpose a comprehensive database is a must. This study tries to do that. An attempt has been made to prepare a wide ranging database for the planners and policy makers.

          The importance of transport is essentially felt in a large country like India with diverse people speaking a number of languages. There are innumerable modes of transport and roads hold a place of pride amongst them. They are flexible, feasible, efficient and cost effective. Flexibility is the hallmark of a good road-network. Economic feasibility often tips the balance in favour of road development first and foremost.

          Grand Trunk Road is like a river of life to this country, in the old, old days, when Muhammad-bin-Tughlaq, Sultan of Delhi streamlined the country’s roads, bullock-carts and camel caravans were the chief transporters. In 1333, when Moroccan traveller Ibne Battuta visited India, he was deeply impressed by the Sultan’s road network. Sher Shah Suri, who ruled from 1540 till 1545, made further improvements, especially to the Grand Trunk Road. He built caravanserais and inns for travellers, and planted fine trees along it and other important highways.

          When the British consolidated their power in India, they found the Grand Trunk Road, stretching as it did from Calcutta to Peshawar, a great line of communication. Due to its importance it touched the life of people residing along its course and in neighbouring area in many ways. It has a tremendous impact over the settlement patterns in the areas it traverses.

Human Settlement Development is responsible to facilitate, promote, co-ordinate and manage integrated human settlements, emergency housing, and upgrading of informal settlements. Good transport facilities like highways help in this up gradation.

          The importance of transport is essentially felt in a large country like India with diverse people speaking a number of languages. There are innumerable modes of transport and roads hold a place of pride amongst them. They are flexible, feasible, efficient and cost effective. Flexibility is the hallmark of a good road-network. Economic feasibility often tips the balance in favour of road development first and foremost.

          Grand Trunk Road is like a river of life to this country, in the old, old days, when Muhammad-bin-Tughlaq, Sultan of Delhi streamlined the country’s roads, bullock-carts and camel caravans were the chief transporters. In 1333, when Moroccan traveller Ibne Battuta visited India, he was deeply impressed by the Sultan’s road network. Sher Shah Suri, who ruled from 1540 till 1545, made further improvements, especially to the Grand Trunk Road. He built caravanserais and inns for travellers, and planted fine trees along it and other important highways.

          When the British consolidated their power in India, they found the Grand Trunk Road, stretching as it did from Calcutta to Peshawar, a great line of communication. Due to its importance it touched the life of people residing along its course and in neighbouring area in many ways. It has a tremendous impact over the settlement patterns in the areas it traverses.

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Mild tremors felt in Delhi, Chennai and parts of eastern India(link)

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Jet Streams, Weather and Flights

Jet stream consists of ribbons of very strong winds which move weather systems around the globe. These streams are found 9-16 km above the surface of the Earth, below the tropopause.

How Are They formed?

Jet streams are formed by a combination of a planet’s rotation on its axis and atmospheric heating (by solar radiation and, on some planets other than Earth, internal heat). Jet streams form near boundaries of adjacent air masses with significant differences in temperature, such as the polar region and the warmer air towards the equator.

How They Work?

Here is a you tube video showing how jet streams are formed and how they work.

How does the jet stream affect the weather?

The position of a jet stream varies within the natural fluctuations of the environment. What happens in one part of the world depends on what is happening elsewhere – the atmosphere is a complete environment with numerous connections.

Waves or ripples along the jet stream can cause Atlantic depressions to deepen explosively as they are steered towards the UK, so they are very important to meteorologists.

The major jet streams on Earth are westerly winds (flowing west to east). Their paths typically have a meandering shape; jet streams may start, stop, split into two or more parts, combine into one stream, or flow in various directions including the opposite direction of most of the jet. The strongest jet streams are the polar jets, at around 7–12 km (23,000–39,000 ft) above sea level, and the higher and somewhat weaker subtropical jets at around 10–16 km (33,000–52,000 ft). The Northern Hemisphere and the Southern Hemisphere each have both a polar jet and a subtropical jet. The northern hemisphere polar jet flows over the middle to northern latitudes of North America, Europe, and Asia and their intervening oceans, while the southern hemisphere polar jet mostly circles Antarctica all year round.

Jet streams are caused by a combination of a planet’s rotation on its axis and atmospheric heating (by solar radiation and, on some planets other than Earth, internal heat). Jet streams form near boundaries of adjacent air masses with significant differences in temperature, such as the polar region and the warmer air towards the equator.

Other jet streams also exist.

During the Northern Hemisphere summer, easterly jets can form in tropical regions, typically in a region where dry air encounters more humid air at high altitudes. Low-level jets also are typical of various regions such as the central United States.

How does the jet stream affect flights?

Meteorologists use the location of some of the jet streams as an aid in weather forecasting and many other things. The main commercial relevance of the jet streams is in air travel, as flight time can be dramatically affected by either flying with the flow or against the flow of a jet stream. Clear-air turbulence, a potential hazard to aircraft passenger safety, is often found in a jet stream’s vicinity, but it does not create a substantial alteration on flight times.

Source(s):


http://www.metoffice.gov.uk/learning/wind/what-is-the-jet-stream

http://en.wikipedia.org/wiki/Jet_stream

 

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Saffir-Simpson Hurricane Scale

All Hurricanes are dangerous, but some are more so than others. The way storm surge, wind and other factors combine determine the hurricanes destructive power. To make comparisons easier and to make the predicted hazards of approaching hurricanes clearer to emergency managers, National Oceanic and Atmospheric Administration’s hurricane forecasters use a disaster-potential scale which assigns storms to five categories. This can be used to give an estimate of the potential property damage and flooding expected along the coast with a hurricane.

The scale was formulated in 1969 by Herbert Saffir, a consulting engineer, and Dr. Bob Simpson, director of the National Hurricane Center. The World Meteorological Organization was preparing a report on structural damage to dwellings due to windstorms, and Dr. Simpson added information about storm surge heights that accompany hurricanes in each category.The Saffir–Simpson hurricane wind scale (SSHWS), or the Saffir–Simpson hurricane scale (SSHS) , classifies hurricanes – Western Hemisphere tropical cyclones that exceed the intensities of tropical depressions and tropical storms – into five categories distinguished by the intensities of their sustained winds. To be classified as a hurricane, a tropical cyclone must have maximum sustained winds of at least 74 mph (33 m/s; 64 kn; 119 km/h) (Category 1). The highest classification in the scale, Category 5, is reserved for storms with winds exceeding 156 mph (70 m/s; 136 km; 251 km/h).

The classifications can provide some indication of the potential damage and flooding a hurricane will cause upon landfall.

Officially, the Saffir–Simpson hurricane wind scale is used only to describe hurricanes forming in the Atlantic Ocean and northern Pacific Ocean east of the International Date Line. Other areas use different scales to label these storms, which are called “cyclones” or “typhoons”, depending on the area.

There is some criticism of the SSHS for not taking rain, storm speed, and other important factors into consideration, but SSHS defenders say that the part of the goal of SSHS is to be straightforward and simple to understand.

Source(s):

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