Kulwinder Singh Coriolis Force and Pressure Gradient Force (PGF) along with Frictional Force are three important forces which determine the direction, speed and curvature of winds both horizontally and vertically. What is Coriolis Force? Coriolis force is the force which is exerted by the rotating Earth on the objects moving on its surface. For example, any moving … Read more
Isopleths are the lines which connect the areas with same values of a given parameter. For example, we use isopleths or isolines for mapping atmospheric pressure, temperature, rainfall etc. To clarify, please note that the units of measurement are different for different parameters. Some of the important isopleths are as following. Types of Isolines 1. … Read more
Monsoon is derived from an Arabic word ‘mausin’ which refers to the seasonal reversal of winds. The Arab traders used to sail their ships to India with the help of these winds. Monsoon in India is an annual phenomena and acts as the rhythm to which most socio-cultural and economic phenomenon align. Definition of Monsoon? … Read more
इस समय उत्तर भारत बहुत गर्म मौसम की चपेट में है। भारत में मार्च से जून के महीनों के दौरान एक आम व्यक्ति बहुत बार हीट वेव्स की खबरें सुनता है। इस लेख में हम हीट वेव की सटीक परिभाषा और हीट वेव्स के कारण पर चर्चा करेंगे। हीट वेव्स क्या है? हम अक्सर सोचते … Read more
Presently, North India is reeling under very hot weather. A common person hears the news of heat wave very often during the months from March to June in India. In this article we will discuss the exact definition of heat waves and the reason of heat waves. What is Heat Wave? We, often, think that … Read more
Net Sown Area and Gross Cropped Area are two concepts which are used repeatedly to indicate the intensity of land use in agricultural sector. What is Net Sown Area? It is total area which is cultivated in an agricultural year. For instance, assume that the total land in a country is 100²Kms and 45²Kms. out … Read more
Whittlesey gave his classification of agriculture in 1936 based on many factors. For instance, factors controlling the yield, spatial stability, market orientation, specialization of agriculture etc. The relevance and basis of classification of Whittlesey’s Agricultural Regions has been discussed in a previous article. Whittlesey’s agricultural regions entails the social, cultural, biological and technological aspects of … Read more
World has different climatic regions and different kinds of agriculture is practices in different climatic zones. However, human beings are intelligent beings. As a result, they are able to control the impact of environment on agriculture. They can also modify the agricultural environment through modern agricultural inputs. Therefore, Derwent Whittlesey classification of agricultural regions entails … Read more
Mark Jafferson propounded his concept of primate city in 1939. He observed that a region’s regional development revolves around a large city of the region. All other cities are smaller than the largest city. He names the largest city as primate city. Characteristics of Primate City Primate city is the largest economically dominant city of … Read more
Many urban geographers have observed the existence of some kind of pattern in size and spacing of cities. Rybsky and Ciccone (2023) traced the historical trajectory of size and spacing of cities. Auerbach is the pioneer scholar who studied the relationship distribution of cities according to size over space. He introduced his ideas in a … Read more