Water & about it!

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First Lecture at Birla College

Text of Water & about it!

  • 1.Amit Chauhan - MSc. Environmental Science Part- IBirla College, University of Mumbai.Lecture 1:

2. About my self! Amit Gopal Chauhan BSc. Botany & Environmental Science,Birla College, 1997 Masters in EnvironmentalManagement, Shivaji University, 2000 MSc. Environmental Assessment andEvaluation, LSE, 2004 3. My resent workThe Green Rating Project in India A Perfect Note but an, Incomplete Symphony! 4. I want to know you people well before proceeding further!( is itpossible?)If I could know your Name,previous study, any publication?,why did you chose this subject?,what are you going to do after yourMSc.? One crisp statement aboutyour goal in life! 5. What you will be learning? Hydrological Cycle Remote Sensing Inventories of Natural Resources Lithosphere and its characteristics Natural Disasters 6. What I want you to do ? Before the lecture After the lecture Go through the If not then after thereadings before thelecture.lecture. Reflect upon the topic and try to Think an form a relate it withview point beforecurrent/ recent /coming for the practical exampleslecturewithin the country and international. 7. Things I would expect form both of us Collect and share readings Speak up and put forward your argumentsopenly without any hesitation. Discuss and clear doubts about the learningright away. Alternatively during the timeallotted as office hours. Communicate via email. Correct references 8. What I would not Expect from you? Communicating within your self duringthe lecture Arrive late for lecture. (first 10 minutesis occasionally acceptable) Not give your seminar. Not writing enough essays Not attending the mock test 9. AnyQuestions? 10. Seminar Each student will give one Alternatively, you canseminar of 20 minutescombine two topics andeach.give a seminar Each seminar willcollectively (a team offollowed by 10 minutes oftwo) within 35 minutes.question and answer Topics in focus ofsession. seminars will not be dealt Good presentation skills,in lectures so please givewith balanced, fullfull references withcoverage of relevant sub-exhaustive coverage.topics is expected. 11. Essays Each student is to give an written essay of notmore then 2500 words by December 7, 2004.There will be four choices. The questions willbe given within two weeks .i.e. by 29thSeptember. Broader coverage of topics, goodappreciation of literature, quantitative &qualitative data compilation, with fullreferences and original insights. 12. Mock test Depends on you, to have it or not tohave it? When? You say it we shall have it. Time, Sixty minutes, one question outof a possible combination of four. I would suggest at least one monthprior to exams. Rest is up to you. 13. Importance of water(cycle)! Life support ability. Most versatile as well as necessary of mansmaterials. Nutrient transport; weathering; patterns ofconcentration always changing. 95% bounded chemically into rocks; 97.3% ofthe remaining 5% in ocean; 2.1% as polarcaps/ glaciers; remaining is fresh includingliquid and vapor state. Ground water cycle the longest. 14. Hydrological Cycle The water that is not locked up as permanent ice iscontinually moving through various pathways onthe atmosphere, biosphere, and lithosphere, andthis set of natural flows is called the hydrologicalcycle. Two Natural Cycles: Long & short Short: Sea water/Fresh waterEvoporationCondensation Presipitation. Long: Surface runoff; percolation/infiltration;evapo-transpiration;ground water; 15. A Summary of Global Hydrological Cycle( assuming 100 water units) 77 84 7 16 23SeaHorizontal advection of water vapor and clouds LandPrecipitation Evaporation Evapo transpitrationover oceanfrom oceanPrecipitation over landsurface runoffand through flow 77 84 71623Source: Environmental Remote Sensing, by Barrett & Curtis, 1999. 16. The major components of the hydrologic cycle are: Evapo-transpiration Condensation Precipitation Infiltration Percolation Runoff 17. The Water Balance Equation.Q = (P E) + (S + T) Where: Q = Stream flow, P = precipitation, E = evapotranspiration, S= net change instorage and T= net underground (influent effluent) transfers. 18. Water Distribution on Earth Total Volume of Water: 1,357,506,000 km Of which we find 1,320,000,000 km(97.2%) in the ocean; 29,000,000 km ( 2.15%) Frozen;8,506,000 km(0.65%) Fresh(Atmosphere, Land) The fresh water is found as 4,150,000 km (48.77%)Ground water( >0.8 km deep); 4,150,000 km;Groundwater (