Geography Study Materials and Hand-outs

Network analysis is an important aspect of transport geography because it involves the description of the disposition of nodes and their relationships and line or linkage of distribution . It gives measures of accessibility and connectivity and also allows comparisons to be made between regional networks within a country and between other countries. As Fitzgerald (1974) has said, variations in the characteristics of networks may be considered to reflect certain spatial aspects of the socio-economic system. The details of important measures of transport networks are given here for proper understanding and application of these measures for:   (i) The connectivity of networks; (ii) The centrality within networks; (iii) The spread and diameter of networks; and (iv) Detours. 1. Connectivity and its Measurement: “The connectivity of a network may be defined as the degree of completeness of the links between nodes” (Robinson and Bamford, 1978). When a network is abstracted

Following content has been collected from:  http://www.geographynotes.com The Ghaggar plain is a micro-geo-historic region of India covering Ganganagar and Hanumangarh districts of the Rajasthan State, as identified by R.L. Singh (1971) and C.D. Deshpande (1982). River Ghaggar is known as a ‘dead river’ and at present it is simply in the form of dry bed, flooded during rains. An important characteristic feature of this region is that it was humid in very ancient period, became arid afterwards and with the availability of canal water converted as an agricul­tural region, not only of the state but of India. Among various means of transportation, road transport plays a vital role in the transformation of the regional economy of the region. Spatial Pattern: The simple distribution pattern of road transportation as shown in Figure 4.12 indicates that although all the tehsils are well served by roads, yet Suratgarh, Anupgarh, Nohar and Ganganagar tehsils are having 12.9, 11.2,11.1,