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Term No. | Term Name | Term Description |
8355 | D/A converter | Circuits that convert a digital signal to an analog one (the analog signal is proportional to an input binary number). ..... |
7900 | Daily flood peak | The maximum daily flow during the flood event...... |
7817 | Daily flow, or Daily discharge | The volume of water passing a particular point during one day...... |
1960 | Daily range of soil temperature | The difference between the maximum and minimum values of soil temperature...... |
8356 | Daisy-wheel printer | An impact printer that uses a print element shaped like a flat disk or large thimble to form the alphanumerics and punctuation marks that are part of ..... |
2113 | Dal soil | A local name for a peat soil in the Netherlands, consisting of a sandy subsoil covered with a layer of lumps of young peat...... |
2327 | Dam | A barrier usually on an important scale across a watercourse, for the purpose of impounding water or creating a reservoir (i) to raise water level, (i..... |
2442 | Dam axis, Axis of dam, or Axis | 1 - In case of gravity, buttress and arch dams it is the horizontal trace of the upstream edge of the top of the structural zone or top arch. 2 - In c..... |
7972 | Dam break analysis | The analysis of the flood flows resulting from postulated conditions of partial or total failure of a water storage dam. Such analyses are particularl..... |
5309 | Dangerous bank | A bank showing signs of slipping due to saturation, or that has been unduly cut and damaged by weathering, cattle, etc...... |
4199 | Darcy`s law | A physical law stating that the rate of viscous flow of fluid in isotropic porous media is proportional to and in the direction of decreasing hydrauli..... |
3156 | Darcy-Weisbach equation | Equation used for calculating head loss due to friction in a conduit and expressed as- LV2 hf = f . ------ D 2g where, hf is head l..... |
3466 | Dash pot | A device employed to damp the movement of a mechanism. It consists of a chamber in which the movement of a plate or vane is decelerated by a fluid who..... |
8443 | Data encryption | Transformation of data into unreadable, meaningless data through a cryptographic transformation using key. Decryption turns unintelligible data into m..... |
6330 | Data transmission | The sending of data from one place to another, or from one part of the system to another...... |
8444 | Database | A collection of structured information for creating a specific format out of some, or all, of the collected data. ..... |
9079 | Date of completion | 1 - The date of completion of the work as specified in the contract. 2 - Actual date on which the work is finished irrespective of the fact that final..... |
3306 | Datum | 1 - An arbitrary horizontal line from which heights and depths are reckoned, as in a longitudinal section of a canal or railroad. 2 - See 14 and 2071...... |
5082 | Datum line | An arbitrary horizontal line from which heights and depths are measured...... |
2071 | Datum, Plane | 1 - The horizontal plane to which soundings and ground elevations of water surface elevations are referred. The plane is called a tidal datum when def..... |
4906 | Day-degree, or Degree day | Variation of one degree per day in mean daily temperature, above an adopted standard reference temperature (usually 10oC). The number of degree days f..... |
4955 | Daylength | Number of hours between sunrise and sunset...... |
8445 | DBMS | Data-Base Management System, a software program that controls and supervises the updating, editing, and execution of items from multiple files in a da..... |
6198 | Dead band | The range through which a controlled variable can vary without initiating a corrective action...... |
5190 | Dead furrow | 1 - A double furrow left in the middle of the field or between two lands in ploughing (illustrated). 2 - In the bedding system of surface drainage, de..... |