@prefix qudt: . @prefix owl: . @prefix ssd: . @prefix xsd: . @prefix skos: . @prefix rdfs: . @prefix qudt-unit: . @prefix qb: . @prefix dgu: . @prefix dct: . @prefix ui: . @prefix reg: . @prefix grib2-parameter: . @prefix qudt-quantity: . @prefix api: . @prefix vann: . @prefix prov: . @prefix foaf: . @prefix cc: . @prefix common-unit: . @prefix grib2-core: . @prefix void: . @prefix version: . @prefix bufr4-core: . @prefix rdf: . @prefix ldp: . @prefix time: . @prefix qudt-dimension: . @prefix vs: . @prefix dc: . @prefix common-core: . a skos:Concept ; rdfs:label "Acoustic doppler current meter" ; dct:description "Determination of stream velocity by means of an acoustic Doppler instrument, which measures the velocity of the water based on the Doppler shift experienced by an acoustic pulse of energy which is reflected off particles suspended in, and moving with, the water. [Based on 'Acoustic Doppler Velocimeter' in Guide to Hydrological Practices (WMO-No. 168), Volume I. 2008 edition, updated in 2020.]"@en ; skos:notation "369" .