The Romans are one of the pioneers of many scientific studies such as geography, climatology, history and medicine etc. Strabo (64 BC-24 AD) was one of those Roman scholars who made significant contribution to geographical studies. Strabo’s contribution to geography can be seen in the 17 Volumes of Geographica written by him. Strabo’s Geography He declared … Read more
Walter Christaller proposed his Central Place Theory in 1933. He aimed to rationalize the distribution of cities over geographic space. He was concerned with the way the settlement of different sizes evolve and are spaced out. It is a theoretical account of size and distribution of settlements within an urban system where marketing is predominant … Read more
What is Exceptionalism? Exceptionalism is an idea that certain disciplines are exceptional in a sense that they study a particular aspect of events and phenomenon which is not studied by other disciplines. Immanuel Kant is considered the father of exceptionalism. He claimed that the geography and history are exceptional in a manner that geography focusses … Read more
What is El Nino? El Nino is a recurring warm ocean current on the west coast of Ecuador, Peru and Chile. Normally on the western coast of Latin America, a cold current flows from the south pacific ocean towards the equator. This cold current is known as Humboldt Cold Current (Fig. 1). The Humboldt current … Read more
Tropic of Cancer divides India in almost two halves i.e. North and South India. It passes through 8 states of India. The names of these states are as following from West to East. Gujarat Rajasthan Madhya Pradesh Chhattisgarh Jharkhand West Bengal Tripura Mizoram Important Facts About Tropic of Cancer It is at 23 1/2 degree … Read more
Geographic data are geographically referenced data wherein individuals can locate and identify features by a spherical coordinate system i.e. latitude and longitude. Based on the nature of the display, this data is classified into two models i.e. vector and raster. Vector Data Vector data models use X and Y coordinates to define the geographic elements. … Read more
Geospatial data is primarily of two types in GIS i.e. spatial data and non-spatial data. Geographical Information System (GIS) is a computer-based programming system which integrates hardware, software, data and user interface for capturing, analyzing and presenting all forms of geographically referenced information over the surface of the earth. It allows users to analyze and visualize … Read more
Harris and Ullman proposed Multiple Nuclei Model in their paper The Nature of Cities (1945) to explain the morphology of a city. They argued that the land use pattern is much more complex than the model given by Burgress, Hoyt & Davis. They observed that the land use pattern is neither in concentric zones or … Read more
Homer Hoyt and M.R. Davis proposed the sector model of urban morphology in 1939. This model was based on observations from 64 cities in the USA. He modified the Concentric Zone Model by Burgess in combination with the impact of transport routes on urban morphology and came up with their own Wedge or Sector Model. … Read more
E.W. Burgess proposed the Concentric zone theory in 1925. This model is also known as ecological theory of city structure or urban morphology. The primary concern of this model was to map the urban social problem i.e. vices and crime in Chicago city. To map the vices and crimes, Burgess mapped the different zone of … Read more