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ZERO ELEVATION [9 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2021-03-29

English

Subject field(s)
  • Mathematical Geography
DEF

The arbitrary level from which vertical displacement is measured. The datum for height measurement is the terrain directly below the aircraft or some specified datum; for pressure altitude, the level at which the atmospheric pressure is 29.92 inches of mercury (1013.2 m.bs); and for true altitude, mean sea level.

CONT

A vertical datum is a surface of zero elevation to which heights of various points are referenced. Traditionally, vertical datums have used classical survey methods to measure height differences(i. e. geodetic levelling) to best fit the surface of the earth.

OBS

altitude datum: term and definition standardized by NATO.

French

Domaine(s)
  • Géographie mathématique
DEF

Niveau arbitraire à partir duquel les distances verticales sont mesurées. Le plan de référence pour les mesures de hauteur est soit le sol ou la mer immédiatement à la verticale de l'aéronef, soit un plan horizontal quelconque. Pour les altitudes-pressions, c'est le niveau qui correspond à la pression atmosphérique de 1013,2 mb (29,92 pouces de mercure). Pour l'altitude vraie, c'est le niveau moyen des mers.

OBS

référence d'altitude : terme et définition normalisés par l'OTAN.

Spanish

Campo(s) temático(s)
  • Geografía matemática
DEF

Nivel elegido arbitrariamente a partir del cual se miden las distancias verticales. El nivel de referencia para las medidas de altura es el terreno que está en la vertical de la aeronave u otro plano de referencia específico. Para las medidas de altitud, en función de la presión es el nivel para el cual la presión atmosférica es de 29,92 pulgadas de mercurio (76 cm de mercurio ó 1.013,2 mbs) y para la altura el nivel medio del mar.

Save record 1

Record 2 2013-01-11

English

Subject field(s)
  • Mathematical Geography
  • Surveying
DEF

In leveling, the amount by which the algebraic sum of the measured differences of elevation around a circuit fails to equal the theoretical closure, zero.

French

Domaine(s)
  • Géographie mathématique
  • Arpentage

Spanish

Save record 2

Record 3 2001-11-05

English

Subject field(s)
  • Airport Runways and Areas
DEF

The runway length selected for aerodrome planning purposes which is required for take-off or a landing under standard atmospheric conditions for zero elevation, zero wind, and zero runway slope.

OBS

runway basic length: term officially approved by the International Civil Aviation Organization (ICAO).

French

Domaine(s)
  • Pistes et aires d'aéroport
DEF

Longueur de piste, choisie à des fins de planification d'aérodrome, qui est nécessaire pour le décollage ou l'atterrissage dans les conditions correspondant à l'atmosphère type, à l'altitude zéro, avec vent nul et pente de piste nulle.

OBS

longueur de base d'une piste : terme uniformisé par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Pistas y áreas del aeropuerto
OBS

longitud básica de pista: término aceptado oficialmente por la Organización de Aviación Civil Internacional (OACI).

Save record 3

Record 4 2001-10-16

English

Subject field(s)
  • Aircraft Piloting and Navigation
OBS

zero elevation; zero degrees elevation : terms officially approved by the International Civil Aviation Organization(ICAO).

French

Domaine(s)
  • Pilotage et navigation aérienne
OBS

angle de site nul; site de zéro degré : termes uniformisés par l'Organisation de l'aviation civile internationale (OACI).

Spanish

Campo(s) temático(s)
  • Pilotaje y navegación aérea
OBS

ángulo de elevación cero; cero grado de elevación: términos aceptados oficialmente por la Organización de Aviación civil internacional (OACI).

Save record 4

Record 5 2000-08-31

English

Subject field(s)
  • Field Artillery
  • Small Arms
CONT

The 8-40x uses short, 3/4" diameter target turrets for adjusting the 1/4 minute elevation and windage adjustments. The turrets are numbered every ten clicks but the numbers on the turrets are half of the number of clicks, i. e. at twenty clicks the mark reads 10. The turrets are set using 1 grup screw which allows quick and accurate adjustment to the zero mark after sighting in.

French

Domaine(s)
  • Artillerie de campagne
  • Armes légères

Spanish

Save record 5

Record 6 1999-09-23

English

Subject field(s)
  • Hydrology and Hydrography
DEF

The elevation of the zero of the gauge to which the level of the liquid surface is related.

OBS

The gauge datum is related to a bench mark.

OBS

gauge datum: term standardized by ISO.

French

Domaine(s)
  • Hydrologie et hydrographie
DEF

Distance verticale entre le zéro de l'échelle et un repère de nivellement donné.

OBS

«niveau de référence» : terme normalisé par l'ISO.

Spanish

Campo(s) temático(s)
  • Hidrología e hidrografía
DEF

Distancia vertical entre el cero de una escala y un nivel dado de referencia.

Save record 6

Record 7 1999-09-23

English

Subject field(s)
  • Scientific Measurements and Analyses
  • Hydrology and Hydrography
DEF

Elevation at which a water level gauge zero is set.

French

Domaine(s)
  • Mesures et analyse (Sciences)
  • Hydrologie et hydrographie
DEF

Altitude à laquelle se trouve le zéro d'une échelle limnimétrique.

OBS

Le «zéro de l'échelle» est la graduation de l'échelle cotée zéro (origine des hauteurs).

Spanish

Campo(s) temático(s)
  • Medición y análisis (Ciencias)
  • Hidrología e hidrografía
DEF

Cota en la que se ha marcado el nivel cero de altura del agua.

Save record 7

Record 8 1986-10-07

English

Subject field(s)
  • Airport Runways and Areas
CONT

... a basic length should be selected for the runway adequate to meet the operational requirements of the aeroplanes for which the runway is intended. This basic length is a runway length selected for aerodrome planning purposes which is required for take-off or landing under standard atmospheric conditions for zero elevation, zero wind and zero runway slope.

French

Domaine(s)
  • Pistes et aires d'aéroport
CONT

(...) choisir une longueur de base susceptible de répondre aux spécifications d'exploitation des aéronefs auxquels la piste est destinée. Cette longueur de base est une longueur de piste, choisie à des fins de planification d'aérodrome, qui est nécessaire pour le décollage ou l'atterrissage dans les conditions correspondant à l'atmosphère type, à l'altitude zéro, avec vent nul et pente de piste nulle.

Spanish

Save record 8

Record 9 1977-09-21

English

Subject field(s)
  • Fluid Mechanics and Hydraulics (Physics)
CONT

Fig. 4 shows the distribution of the depth-averaged velocity and the water surface elevation resulting from the experiment and its numerical simulation, both by the zero order system.

French

Domaine(s)
  • Mécanique des fluides et hydraulique (Physique)

Spanish

Save record 9

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