As the steam rises in the atmosphere, it is being cooled, condensed, and returned to the land and the sea as. Changes in land cover, atmospheric composition and sea surface temperature alter the hydrological cycle both persistently and on a temporary basis. Regional variability global averages obscure substantial regional differences in the hydrologic cycle. Engineering hydrology hydrology hydrology deals with the origin, occurrence, circulation, distribution, the physical and chemical properties of water and its interaction with living organisms. Ppt the hydrological cycle powerpoint presentation. Hydrologic cycle definition and the process are explained in detail below.
During its journey, water is continuously reused and recycled. The mass of water on earth remains fairly constant over time but the. This website, presented by nasas global precipitation measurement gpm mission, provides students and educators with resources to learn about earths water cycle, weather and. Aircurrent cycles drive the earths water supply through a cycle of its own, called the hydrologic cycle. Of the many processes involved in the hydrologic cycle the most important. The effects of climate change on precipitation, evaporation, and extremes of floods and droughts are elucidated. Of the many processes involved in the hydrologic cycle. Local occurrence, quantity, and quality can be modi. The hydrological cycle is a conceptual model that has most important processes such as evaporation, transpiration, condensation, and infiltration. The air is colder higher up, so as the water vapor rises, it cools, condensing into droplets. Encyclopedia of life support systems eolss summary a major land use change is the addition and removal of forests from the landscape. Global hydrological processes and role of water cycle in.
In engineering hydrology, runoff is the main area of interest. The natural hydrological processes that prevail in the area are therefore seriously affected due to urbanization. Water evaporates from the ocean surface, driven by energy from the sun, and joins the atmosphere, moving inland as clouds. It becomes the focal concept a nd dining mechanism for part of the rock cy cle, geochemical cycle and the sedimentary cycles of biog. The knowledge of hydrology is necessary to perform design, operation and maintenance of the water resource engineering projects. The hydrologic cycle is the primary cy cle of the planet earth. Water is always changing states between liquid, vapor, and ice, with these processes. A free powerpoint ppt presentation displayed as a flash slide show on id. Evaporation from the oceans ranges from 4 mmd in the tropics to nptel civil engineering unsaturated soil mechanics. Soil exploration lecture notes, notes, pdf free download, engineering notes, university notes, best pdf notes, semester, sem, year, for all, study material.
A pictorial view of the hydrological cycle is given in fig. Hydrological cycle free download as powerpoint presentation. Winner of the standing ovation award for best powerpoint templates from. Subsequent slides discuss each process individually. The water cycle pdf diagram detailed description the water cycle. Evaporation from the oceans ranges from 4 mmd in the tropics to hydrologic cycle.
Hydrology is the study of occurrence and movement of water above or below the surface. Hydrologic cycle hydrologic cycle is ultimately driven by solar radiation, which evaporates water from the ocean and lift it up in the atmosphere. The illustration shows the hydrologic cycle in which water leaves the atmosphere and falls to earth as precipitation where it enters surface waters or percolates into the water table and groundwater and eventually is taken back into the atmosphere by transpiration and evaporation to begin the cycle again. Hydrologic cycle is the series of conditions through which water changes from vapor in the. The hydrologic cycle is the term used to describe the movement and storage of water through earth, and this quizworksheet combo will help you test your knowledge on. International association of scientific hydrology publication no.
Lesson plan for hydrologic cycle duke computer science. The science of hydrology primarily deals with the land portion of the hydrologic cycle. This unit introduces the hydrological cycle to provide context for the module as a whole. Water also evaporates from plant leaves through the mechanism of transpiration.
Herewith we have shared the important gate civil engineering notes pdf. In such cases, we recommend that the instructor skip the hydrologic cycle exploration activity and move right to the water cycle sustainability roleplay. Hydrology online engineering hydrology class lectures. Worlds best powerpoint templates crystalgraphics offers more powerpoint templates than anyone else in the world, with over 4 million to choose from. The major sources of fresh water are the rivers, ponds, springs and glaciers. Water on this planet can be stored in any one of the followingreservoirs.
The same water that existed centuries ago still exists today. Ground water is the second smallest of the four main pools of water on earth, and river flow to the oceans is one of the smallest fluxes, yet ground water and surface water. Questions and answers for nptel phase 2 video course on groundwater gw hydrology question 1. It covers the various data that are used in the field of hydrology. All of the water on our planet is recycled and a given molecule of water is used over and over throughout time. The movement and storage of water in our natural environment is described as the hydrological cycle. The key storages and processes within the hydrological cycle are.
Nptel syllabus hydrological measurements and analysis of data web course course outline data are the foundations on which all hydrologic analysis, design, and management decisions rest. The hydrological cycle is the most important carrier of water, energy, and matter chemicals, biological material, sediments, etc, locally and globally fig. The cycle extends its scope from 15 km up into the atmosphere from the earths surface to about 1km below the earths crust through a maze of paths. Hydrological cycle works more actively in the equatorial region that in polar region.
Hydrology gate lecture introduction, books, syllabus youtube. Feb 24, 2010 hydrologic cycle hydrologic cycle cycling of water in and out of atmosphere and between all the earths components. Pdf questions and answers for nptel phase 2 video course on. Explain how balance is maintained within the system. Application of the hbv hydrological model in a flash flood case in slovenia. Jan 16, 2018 nature regulates itself in a cyclic manner.
Due to solar radiation, water evaporates, generally from the sea, lakes, etc. At its core, the water cycle is the motion of the water from the ground to the atmosphere and back again. Understand the rudimentary elements to the hydrologic cycle. Hydrologic principles hydrologic cycles and weather, hydrologic losses philosophy of mathematical models of watershed hydrology. The hydrological cycle is the circulation of water within the hydrosphere of earth in different forms such as liquid, solid and gaseous states. The hydrologic cycle begins with the evaporation of water from the surface of the. The hydrologic cycle is the perpetual movement of water. We can start our examination of the hydrologic cycle with the oceans, which hold over 97% of the planets water. The path water takes as it circulates from the land to the sky and back again. Of the many processes involved in the hydrologic cycle, the most important are. The hydrological cycle hydrometeorology wiley online. Be able to draw a diagram of the hydrological cycle. This process could be called the earths water circulation system. Environmental scientists know that the hydrologic cycle includes various.
Hydrological cycle is also known as the water cycle. Ocean this vast body of salt water covers 70% of the earths surface. The water cycle, also known as the hydrologic cycle or the hydrological cycle, describes the continuous movement of water on, above and below the surface of the earth. The concept of the hydrological cycle also suffered from stagnation over the same period. From the time of plato and aristotle in the fourth century b. The first slide shows a picture that includes all processes in the water cycle. Nptel notes pdf civil engineering 105 courses in pdf format. Water is found in liquid rain, river flow, solid snow, ice and gas water vapor, evaporation forms. In reality, the hydrologic cycle is hardly a cycle at all, because its revolutions are tied to other cycles, quasi. Environmental scientists know that the hydrologic cycle includes various processes that change water from solid to liquid to gas form and transport it to every corner of earths surface and below. Earths water is always in motion, and the natural water cycle, also known as the hydrologic cycle, describes the continuous movement of water on, above, and below the surface of the earth. It is spread over 15 km in the environment and 1 km in lithosphere. Hydrology and hydrological cycle are important science that deals with the depletion and the replenishment of the water resources.
It basically deals with transformation of water in different forms starting from gaseous stage water vapor to liquid state water on earths surface, and water inside soil as. Because the climate is changing from human activities, and there is a direct effect on the hydrological cycle, water resources will also change. The importance of hydrological cycle on earth arabinda paul bhatter college, dantan abstract the other name of water is life. The hydrologic cycle qualitatively, quantitatively, and conceptually is depicted in figures.
Their are various cycles of nature like water cycle, hydrological cycle, carbon cycle, oxygen cycle, nitrogen cyc. As the steam rises in the atmosphere, it is being cooled, condensed. And learnt the statistical techniques such as statistical properties of a pdf. The water, or hydrologic, cycle describes the pilgrimage of water as water molecules make their way from the earths surface to the atmosphere and back again, in some cases to below the surface.
This powerpoint file contains information about the water. Jan 28, 2019 the hydrologic cycle is the process, powered by the suns energy, which moves water between the oceans, the sky, and the land. Iii the role of forests in the hydrological cycle roberts j. The sun heats the air, causing the air to rise in the atmosphere.
Also known as the water cycle, the process explains the continuous movement of water on above and below the earths surface. Anirban dhar,department of civil engineering,iit kharagpur. Global hydrological cycle processes the hydro cycle the hydrologic cycle describes the continuous re circulating transport of the waters of the earth, linking atmosphere, land and oceans. The hydrologic cycle involves the continuous circulation of water in the earthatmosphere system. This course introduces the fundamental concepts and techniques of hydrologic measurements. Hydrological cycle an overview sciencedirect topics. Mod01 lec02 ground water in hydrologic cycle contd.
The terrestrial hydrological cycle the key component of the terrestrial hydrological cycle is generation of river runoff and movement of water in the river networks. Nptel syllabus hydrological measurements and analysis of. The hydrological cycle is a process of constant water exchange or water circulation in the hydrosphere, i. Hydrology and hydrological cycle in water resource engineering. If such information interests you then take this quiz and see how knowledgeable you are. Water footprint give students the handout water footprint word microsoft word 2007. To develop technical skills for modelling and quantifying hydrological processes. Part 1, general surface water techniques doublemass curves by james k. Nptel syllabus hydrological measurements and analysis of data. Hardison abstract the double mass curve is used to check the consistency of many kinds of jiydrologic data by comparing data for a single station with that of a pattern. Water resources management the hydrological cycle and human impact on it lev s.
When water turns to vapor and rises into the atmosphere its called. Rainfall or snow interception depression storage evapotranspiration infiltration surface storage runoff interflow groundwater flow adapted from epa basins workshop evapotranspiration interception depression storage ground surface capillary. Download irrigation hydrology class lecture notes pdf. What form water takes and where it goes once it reaches the earth depends on where it lands. The water used to irrigate a field in haryana may have flowed down the amazon river a hundred years ago. Ppt hydrologic cycle powerpoint presentation free to. Chapter 2 the hydrological cycle the hydrologiccycle is a conceptual model thatdescribes the storage and movement of water between the biosphere, atmosphere, lithosphere, and the hydrosphere see figure2. Analysis of a changing hydrologic flood regime using the variable infiltration capacity model, journal of hydrology 515, 267280.
At its core, the water cycle is the motion of the water from the ground, to the atmosphere, and back again. Nov 03, 2014 this cycle is called as hydrological cycle. The hydrologic cycle involves water moving from the surface most importantly the oceans to the atmosphere, across the land, and everywhere in between. Herewith we have shared the important gate civil engineering notes pdf for the topic of hydrologic cycle rainfall evaporation infiltration stage discharge. The geographical name of all types of water in the world is hydrosphere. Advanced hydrology web course civil engineering nptel. Development of research capabilities so that the students completing the course shall be capable of pursuing further works on water management, integrated water resources management, urban. The last slide provides information on the distribution of water on the earth.
Surface water hydrology hydrologic cycle, rainfall and its measurement, mean rainfall. Unesco eolss sample chapters forests and forest plants vol. The mass of water on earth remains fairly constant over time but the partitioning of the water into the major reservoirs of ice, fresh water, saline water and atmospheric water is variable depending on a wide range of climatic. Hydrological cycle is the most fundamental principle of hydrology. Microsoft word lesson plan for hydrologic cycle author. Water in the hydrosphere is liquid, solid or gaseous. This powerpoint file contains information about the water cycle.
The main land area units where this process occurs is the river watersheds. It particularly focuses on those portions of the hydrological cycle that take place on land and that form the basis for water that is used by society. It also denotes the uninterrupted exchange of water between the land surface, oceans and subsurface and the organisms. W ater is stored in the oceans, in the atmosphere, as well as on and. It falls to the earth as rain, snow, sleet, or hail and evaporates from the earth back into the atmosphere as water vapor. When water evaporates directly from glacial ice, its called. Advanced hydrology video course civil engineering nptel. The important reservoirs within the hydrologic cycle include.
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