CIMER
Comité interministériel de la mer (interministerial committee for the sea)
Civil time
Mean time plus 12 hours.
CNES
Centre National d'Etudes Spatiales (national space study centre)
CNRS
Centre National de la Recherche Scientifique (national scientific research centre).
Coefficient
Measurement of the amplitude of the tide expressed relative to the unit of height.
Concordance; species concordance
Tidal analysis and prediction technique using the relations between the elements of a standard port and those of a secondary port.
Cotidal line
Line on a chart passing through all the points at which high tide occurs at the same time.
CR
Conseil Régional (regional council)
CRATANEM
Centre régional d'alerte aux tsunamis pour l'Atlantique Nord-Est et la Méditerranée (Regional tsunami alert centre for the North East Atlantic and Mediterranean)
Current amplitude
Maximum speed during a tidal cycle.
Current atlas
Cartographic representation of the tidal current fields at various times.
Damping well
Device in a tidal observatory designed to flatten the area of water and reduce rapid movements due to waves and swell.
DDE
Direction Départementale de l'Equipement (county council infrastructure directorate).
DDEA 14 / SRAN
Direction Départementale de l'Equipement et de l'Agriculture du Calvados / Service Réglementation et activités nautiques (county council infrastructure and agricultural directorate for the Calvados department / Regulatory and nautical activities department)DDTM: Direction Départementale des Territoires et de la Mer (county council territorial and maritime department).
Declination
Angle between the celestial body and the equatorial plane.
DéGéOM
Délégation générale de l'Outre-Mer (general delegation for overseas territories).
DGEC/ONERC
Direction générale de l'énergie et du climat / Observatoire national sur les effets du réchauffement climatique (general directorate for energy and climate / National observatory of the effects of global warming).
DGM
Direction générale de la météorologie (Madagascar) (general directorate for meteorology (Madagascar)).
DGPR
Direction générale de la prévention des risques (general directorate for risk prevention).
Diurnal tide
One high water and one low water per day; the semi-diurnal components are negligible.