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DRAINAGE BOUNDARY DEFINITION

DRAINAGE BOUNDARY DEFINITION. NETTER. Graph Server. User Interface: Database- Manager. HYMOS. Database. ODS Server. Database Server. HYMOS COMPONENTS. HYMOS IS A COLLECTION OF MANY INDIVIDUAL COMPONENTS. Codification in HYMOS. General Data Structure in HYMOS.

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DRAINAGE BOUNDARY DEFINITION

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  1. DRAINAGE BOUNDARY DEFINITION

  2. NETTER Graph Server User Interface: Database- Manager HYMOS Database ODS Server Database Server HYMOS COMPONENTS HYMOS IS A COLLECTION OF MANY INDIVIDUAL COMPONENTS

  3. Codification in HYMOS

  4. General Data Structure in HYMOS • Databases ………Stations………Data Catchment - b . . . Catchment - j Station Particulars/History Time series data Current metering data Discharge rating data Sediment rating data Cross section data Relation oriented data Station a . . Station x . . Station y

  5. Equidistant time series data Station - j Time interval 1 Time interval 2 Time interval 3 . . Time interval j Type aa . . Type ab . . Type ba

  6. Non-equidistant time series data Station - j Type pp . . Type pq . . Type qq

  7. Directory Structure in HYMOS ACCESS DATA BACKUP FIXED REPORTS SYSTEM UTILS • Hymos Programs & System • Database Files DRIVE - X PATH ... HYMOS4 DRIVE - y . . . . DRIVE - z PATH ... HYMOS DATABASES CAT1.DAT CAT2.DAT CAT3.DAT etc. PATH ... XXX DIRECTORY BAS1.DAT BAS2.DAT BAS3.DAT etc. DB MAPS SABARMATI.RAW

  8. Equidistant time series code Time interval 1 Time interval 2 Time interval 3 . . Time interval j Type aa . . Station - j Type ab . . Type ba Station Code + Data Type Code + Time Interval Code SERIES CODE

  9. Non-equidistant time series code Type pp . . Station - j Type pq . . Type qq Station Code + Data Type Code SERIES CODE

  10. Special time series codes Type AE(annual exceedances of fixed duration) Type AM(monthly maximum rainfall amounts) Station - j Station Code + Data Type Code SERIES CODE

  11. Codification • STATION • Unique set of 1 to 12 characters to identify a station • Also, the first part of time series code • MEASUREMENT TYPE • Instantaneous • Accumulative • Constant

  12. Time interval & time label Unit Code Calendar YEAR 1 MONTH 2 DAY 3 Time HOUR 4 MINUTE 5

  13. Time interval Time interval Time interval unit + Divider Time interval unit : YEAR 1 MONTH 2 DAY 3 HOUR 4 Divider : 1 - 99 Examples : Yearly data 1, 1 Daily data 3, 1 8 Hourly data 3, 3

  14. Exercise - time interval • Time intervals • Seasonal • Monthly • Decade (10 days) • Weekly • 15 minute • 10 minute • Half daily • 3 hourly

  15. Answers • Time intervals Unit, Divider • Seasonal (4 seasons) 1,4 • Monthly 2,1 or 1,12 • Decade (10 days) 2,3 * • Weekly 1,52 * • 15 minute 4,4 • 10 minute 4,6 • Half daily 3,2 • 3 hourly 3,8

  16. Basic time interval Basic time interval Basic time interval unit + Multiplier Basic time interval unit : 2 Month 3 Day 4 Hour 5 Minute Multiplier : 1 - 99 Examples : Data T.I B.T.I 3,10 Decade 2, 3 3, 7 Weekly 1, 52 ?? Pentad 2, 6

  17. Cyclic Series - Unequal intervals/Non-standard timings Unequal time intervals E.g., 3 observations a day at 0800, 1300, 1800 hrs. Cyclic Series Non-standard timings E.g., Day’s observations at 0830 hrs. Examples : Data T.I B.T.I 3, 3 Cyclic 0800, 1300, 1800 hrs. Cyclic 3, 1 Daily at 0830 hrs. Twice Daily at 0830 & 1730 hrs. 3, 2 ??

  18. Time Label • Year >1850 + • Month 1-12 + • Day 1-28, 29, 30, 31 + • Hour 0-23 + • Subdivision index 1-99 = Position inside time unit • If any of the above is not in use, then it is = 0

  19. Examples - time label 1989, 1, 30, 0, 1 1976, 2, 0, 0, 2 1985, 7, 0, 0, 1 1980, 2, 1, 10, 1 1980, 2, 1, 10, 2 1985, 1, 7, 11, 4 • 30 Jan 1989 • Decade 11-20 Feb. 76 • July 1985 • 1000 - 1030 hrs, 1/2/80 • 1030 - 1100 hrs, 1/2/80 • 1145 - 1200 hrs, 7/1/85

  20. Exercise - time interval & time label 1,4 0,0 1991,0,0,0,2 2,1 0,0 1895,6,0,0,1 2,3 3,10 1956,8,0,0,3 2,6 3,5 1972,5,0,0,2 3,1 0,0 1947,4,21,0,1 T Basic T Time label • 4 seasons, 2nd season of 1991 • June 1895 • 3rd Decade August 1956 • 6 - 10 May 1972 • 21 April 1947

  21. Exercise - time interval & time label 4,6 0,0 1985,1,31,0,5 4,2 0,0 1967,3,5,18,2 4,60 0,0 1991,4,22,9,6 1,52 3,7 1980,0,0,0,14 4,4 0,0 1960,2,29,0,1 T Basic T Time label • 1600 - 2000 hrs. 31 Jan. 1985 • 1830 - 1900, 5 March 1967 • 0905 - 0906 hrs. 22 Apr. 1991 • 14th Week 1980 • 2400 h 28/2 - 0015 h. 29/2 1960

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