Geography

Dams and flood control The efficiency of dams to withhold floods has always been put to question. Critics have also termed dams as harbinger of floods claiming that the essential scientific assessment for consistent release of water to avoid build up is rarely done. Absence of a standard operating procedure for releasing water from the … Read more

Tsunami is a Japanese word for “Harbour wave”. They are also known as seismic sea waves. They are very long-wavelength water waves in oceans or seas. They are commonly referred to as tidal waves because of long wavelengths, although the attractions of the Moon and Sun play no role in their formation. They sometimes come … Read more

Major irrigation projects The Lower Bhavani Project  The Lower Bhavani project was one of the British achievements in the Tamil country. For the preliminary works regarding the Lower Bhavani project that government appointed Sir. Charles Innes in 1906 as the Special Revenue Officer instructing him to report on the various aspects of the scheme. After … Read more

The climate of japan is modified by insularity and also by meeting of the cold and warm ocean currents. It receives adequate rainfall from both the south east monsoon in summer and the north west monsoon in winter. During the north west monsoon dry cold wind from mainland Asia blows. But they gather moisture on … Read more

The world is entering in the twenty-first century so that every sector of the economy should prepare itself to face the challenges of the coming century. There will be need to produce more than what is being produced and there would be greater demand for food, fiber and other commodities. The land area is limited … Read more

Excessive rainfall in river catchments or concentration of runoff from the tributaries and river carrying flows in excess of their capacities. Backing water in tributaries at their confluence with the main river. Synchronization of flood peaks in the main rivers or their tributaries. Intense rainfall when river is flowing full. Poor natural drainage system. Landslides … Read more

Types of Rural Settlements: Geographers have suggested various schemes of classification. If we group settlements found all over the country, these can broadly be grouped under four categories: Compact/clustered/nucleated settlement Semi-compact/Semi-clustered/fragmented settlement Hemleted settlement Dispersed settlement   Compact Settlements: As the name suggests, these settlements have closely built up area. Therefore in such settlements all … Read more

Irrigation should be schedule when the soil temperature is moderate. In hotter season it is better to irrigate the field during the late afternoon or at night so that both soil and plant get sufficient time to absorb water before dry and desiccating weather prevails the next day. During the very cold season water should … Read more

The continental shelf is the extended margin of each continent occupied byrelatively shallow seas and gulfs. It is the shallowest part of the ocean showing anaverage gradient of 1° or even less.The width of the continental shelves vary from one ocean to another. The average widthof continental shelves is about 80 km. Significance of Continental … Read more

Grid management on regional basis started in sixties. Initially, State grids were inter-connected to form regional grid and India was demarcated into 5 regions namely Northern, Eastern, Western, North Eastern and Southern region. In October 1991 North Eastern and Eastern grids were connected. In March 2003 WR and ER-NER were interconnected . August 2006 North … Read more