Matches in SemOpenAlex for { <https://semopenalex.org/work/W2468715071> ?p ?o ?g. }
Showing items 1 to 70 of
70
with 100 items per page.
- W2468715071 endingPage "595" @default.
- W2468715071 startingPage "587" @default.
- W2468715071 abstract "비포화 흐름에 관하 실험은 토양내 물의 이송특성을 밝히는 매우 중요한 의미를 가지고 있다. 하지만 Tensiometer와 같은 전통적인 측정방법은 비교적 길기 때문에 함수량이 급격하게 변하는 비정상류 비포화흐름을 측정하는데 상당한 어려움이 따른다. 본 연구에서는 TDR을 이용하여 이러한 문제를 해결할 수 있는 함수량 측정방법을 소개하고자 한다. TDR은 구형파를 발생시키는 함수방생기와 반향파를 분석하는 오실로스코프로 구성되어 있다. 토양속에 설치된 탐침을 지나는 구형파는 임피던수가 변하는 지점에서 반향되며 주변토양의 우전율상수 변화에 따라 전파속도가 달라지게 된다. 이 때 토양내 함수량은 함수량에 따른 반향시간특성을 이용하여 추정되어진다. TDR을 이용하는 함수량측정의 검증실험에 의하면 오븐 건조한 함수량에 대한 TDR측정 함수량의 오차율이 3.5% 이내 이었다. 따라서 TDR은 국내토양에 대한 비정상류 상태의 비포화흐름을 측정하는데 매우 훌륭한 실험장치로 판단된다. 【Experimental study on unsaturated flow in the soil is important to understand the characteristics of the water flow. Measurement of unsteady-state water movement using the traditional equipment (e.g. tensiometer) has a problem that requires relatively a long response time. In this study a quick measurement method of soil water flow using TDR is introduced. TDR consists of an electronic function generator which generates a squared wave, and an oscilloscope which catches the reflected wave. The wave is reflected where both the impedance of the transmission line and the propagation velocity are changed. The water content can be obtained from the travel time measured by means of TDR because the dielectric constant is affected by the change of soil water content. From the result of TDR calibration. TDR measurement error for the oven dried soil was found to be less than 3.5%. This supports that TDR is a viable technique to measure the unsteady-state water movement.】" @default.
- W2468715071 created "2016-07-22" @default.
- W2468715071 creator A5079698856 @default.
- W2468715071 creator A5087194241 @default.
- W2468715071 creator A5091343917 @default.
- W2468715071 date "1997-12-30" @default.
- W2468715071 modified "2023-09-27" @default.
- W2468715071 title "TDR(Time Domain Reflectometry)을 이용한 토양함수량의 측정" @default.
- W2468715071 hasPublicationYear "1997" @default.
- W2468715071 type Work @default.
- W2468715071 sameAs 2468715071 @default.
- W2468715071 citedByCount "1" @default.
- W2468715071 countsByYear W24687150712013 @default.
- W2468715071 crossrefType "journal-article" @default.
- W2468715071 hasAuthorship W2468715071A5079698856 @default.
- W2468715071 hasAuthorship W2468715071A5087194241 @default.
- W2468715071 hasAuthorship W2468715071A5091343917 @default.
- W2468715071 hasConcept C103824480 @default.
- W2468715071 hasConcept C105795698 @default.
- W2468715071 hasConcept C119599485 @default.
- W2468715071 hasConcept C121332964 @default.
- W2468715071 hasConcept C127313418 @default.
- W2468715071 hasConcept C127413603 @default.
- W2468715071 hasConcept C159390177 @default.
- W2468715071 hasConcept C159750122 @default.
- W2468715071 hasConcept C165801399 @default.
- W2468715071 hasConcept C165838908 @default.
- W2468715071 hasConcept C184026988 @default.
- W2468715071 hasConcept C187320778 @default.
- W2468715071 hasConcept C2778925768 @default.
- W2468715071 hasConcept C2780464318 @default.
- W2468715071 hasConcept C2988574769 @default.
- W2468715071 hasConcept C31972630 @default.
- W2468715071 hasConcept C33923547 @default.
- W2468715071 hasConcept C39432304 @default.
- W2468715071 hasConcept C41008148 @default.
- W2468715071 hasConcept C62520636 @default.
- W2468715071 hasConcept C8892853 @default.
- W2468715071 hasConceptScore W2468715071C103824480 @default.
- W2468715071 hasConceptScore W2468715071C105795698 @default.
- W2468715071 hasConceptScore W2468715071C119599485 @default.
- W2468715071 hasConceptScore W2468715071C121332964 @default.
- W2468715071 hasConceptScore W2468715071C127313418 @default.
- W2468715071 hasConceptScore W2468715071C127413603 @default.
- W2468715071 hasConceptScore W2468715071C159390177 @default.
- W2468715071 hasConceptScore W2468715071C159750122 @default.
- W2468715071 hasConceptScore W2468715071C165801399 @default.
- W2468715071 hasConceptScore W2468715071C165838908 @default.
- W2468715071 hasConceptScore W2468715071C184026988 @default.
- W2468715071 hasConceptScore W2468715071C187320778 @default.
- W2468715071 hasConceptScore W2468715071C2778925768 @default.
- W2468715071 hasConceptScore W2468715071C2780464318 @default.
- W2468715071 hasConceptScore W2468715071C2988574769 @default.
- W2468715071 hasConceptScore W2468715071C31972630 @default.
- W2468715071 hasConceptScore W2468715071C33923547 @default.
- W2468715071 hasConceptScore W2468715071C39432304 @default.
- W2468715071 hasConceptScore W2468715071C41008148 @default.
- W2468715071 hasConceptScore W2468715071C62520636 @default.
- W2468715071 hasConceptScore W2468715071C8892853 @default.
- W2468715071 hasIssue "6" @default.
- W2468715071 hasLocation W24687150711 @default.
- W2468715071 hasOpenAccess W2468715071 @default.
- W2468715071 hasPrimaryLocation W24687150711 @default.
- W2468715071 hasVolume "30" @default.
- W2468715071 isParatext "false" @default.
- W2468715071 isRetracted "false" @default.
- W2468715071 magId "2468715071" @default.
- W2468715071 workType "article" @default.