Notes and Study material for Exams
Remote Sensing Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to on-site observation. In current usage, the term “remote sensing” generally refers to the use of satellite- or aircraft-based sensor technologies to detect and classify objects on Earth, including on … Read more
Remote sensing refers to the measurement or acquisition of information about an object or phenomena from a distance without physical contact by using devices or sensors mounted on some platform. Remote sensors collect data by detecting the energy that is reflected from Earth. These sensors can be on satellites or mounted on aircraft. Remote sensors can … Read more
The Global Positioning System consists of 24 satellites, that circle the globe once every 12 hours, to provide worldwide position, time and velocity information. GPS makes it possible to precisely identify locations on the earth by measuring distance from the satellites. GPS allows you to record or create locations from places on the earth and … Read more
–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> Oceans tides An ocean tide refers to the cyclic rise and fall of seawater. Tides are caused by slight variations in gravitational attraction between the Earth and the moon and the Sun in geometric relationship with locations on the Earth's surface. Tides are periodic primarily because … Read more
–2/”>a >DOCTYPE html PUBLIC “-//W3C//DTD XHTML 1.0 Transitional//EN” “http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd”> Salinity is defined as the ratio between the weight of the dissolved materials and the weight of the sample sea water. Generally, salinity is defined as ‘the total amount of solid material in grams contained in one kilogram of sea water and is expressed as part … Read more
Rainfall: With an Average annual rainfall of 1,170 mm, India is one of the wettest countries in the world. At one extreme are areas like Cherrapunji, in the northeast, which is drenched each year with 11,000 mm of rainfall, and at the other extreme are places like Jaisalmer, in the west, which receives barely … Read more
Remote Sensing Remote sensing is the acquisition of information about an object or phenomenon without making physical contact with the object and thus in contrast to on-site observation. In current usage, the term “remote sensing” generally refers to the use of satellite- or aircraft-based sensor technologies to detect and classify objects on Earth, … Read more
Fisheries What is Fisheries? Overfishing Pollution Climate Change What is Fisheries? Fisheries is the science and practice of catching and harvesting fish and other aquatic animals. It is a major economic activity in many parts of the world, and it provides food for millions of people. Fisheries can be divided into two main categories: capture … Read more
The General Circulation of the Atmosphere: A Symphony of Winds and Weather The Earth’s atmosphere is a dynamic system, constantly in motion, driven by the uneven distribution of solar energy and the planet’s rotation. This movement, known as the general circulation of the atmosphere, is a complex interplay of winds, pressure systems, and temperature gradients … Read more
The Subtle Dance of the Tides: Understanding Neap Tides The rhythmic rise and fall of the ocean, the ebb and flow of the tides, is a mesmerizing natural phenomenon that has captivated humans for millennia. This constant dance is driven by the gravitational pull of the moon and the sun, creating a complex interplay of … Read more