Mechanics analysis of tipping bucket rain gauge
碩士 === 國立臺灣大學 === 土木工程學研究所 === 104 === In Taiwan, rainfall of high intensity in short duration occurs more frequently over past decades. High intensity rainfall is usually underestimated by using tipping bucket rain gauge (TBR). For example, the rainfall during Typhoon Morakot was underestimated ove...
Main Authors: | , |
---|---|
Other Authors: | |
Format: | Others |
Language: | zh-TW |
Published: |
2015
|
Online Access: | http://ndltd.ncl.edu.tw/handle/97330112399391773420 |
id |
ndltd-TW-104NTU05015005 |
---|---|
record_format |
oai_dc |
spelling |
ndltd-TW-104NTU050150052017-05-20T04:30:06Z http://ndltd.ncl.edu.tw/handle/97330112399391773420 Mechanics analysis of tipping bucket rain gauge 傾斗式雨量計之力學分析 Jhan- Ming Jhou 周展名 碩士 國立臺灣大學 土木工程學研究所 104 In Taiwan, rainfall of high intensity in short duration occurs more frequently over past decades. High intensity rainfall is usually underestimated by using tipping bucket rain gauge (TBR). For example, the rainfall during Typhoon Morakot was underestimated over 30% in Tsengwen Reservoir watershed. However, rainfall data is a very important parameter for design of disaster prevention and mitigation. The wrong observed rainfall may cause wrong design and severe threat to human life and property. To solve the problem of underestimation, we develop a mechanical theory to analyze and adjust TBR in two parts, i.e. rain gauge and tipping bucket. The former part is to find out the correlation between RI and flow rate at the bottom of rain gauge. For the tipping bucket, the motion is analyzed during rainfall input. To verify our theory, we also conduct laboratory experiments. As a result, the prediction of our theory is in good agreement with the actual rainfall input. Therefore, our theory can give practical reference for calibration and improvement of TBR. Ko-Fei Liu 劉格非 2015 學位論文 ; thesis 60 zh-TW |
collection |
NDLTD |
language |
zh-TW |
format |
Others
|
sources |
NDLTD |
description |
碩士 === 國立臺灣大學 === 土木工程學研究所 === 104 === In Taiwan, rainfall of high intensity in short duration occurs more frequently over past decades. High intensity rainfall is usually underestimated by using tipping bucket rain gauge (TBR). For example, the rainfall during Typhoon Morakot was underestimated over 30% in Tsengwen Reservoir watershed. However, rainfall data is a very important parameter for design of disaster prevention and mitigation. The wrong observed rainfall may cause wrong design and severe threat to human life and property. To solve the problem of underestimation, we develop a mechanical theory to analyze and adjust TBR in two parts, i.e. rain gauge and tipping bucket. The former part is to find out the correlation between RI and flow rate at the bottom of rain gauge. For the tipping bucket, the motion is analyzed during rainfall input. To verify our theory, we also conduct laboratory experiments. As a result, the prediction of our theory is in good agreement with the actual rainfall input. Therefore, our theory can give practical reference for calibration and improvement of TBR.
|
author2 |
Ko-Fei Liu |
author_facet |
Ko-Fei Liu Jhan- Ming Jhou 周展名 |
author |
Jhan- Ming Jhou 周展名 |
spellingShingle |
Jhan- Ming Jhou 周展名 Mechanics analysis of tipping bucket rain gauge |
author_sort |
Jhan- Ming Jhou |
title |
Mechanics analysis of tipping bucket rain gauge |
title_short |
Mechanics analysis of tipping bucket rain gauge |
title_full |
Mechanics analysis of tipping bucket rain gauge |
title_fullStr |
Mechanics analysis of tipping bucket rain gauge |
title_full_unstemmed |
Mechanics analysis of tipping bucket rain gauge |
title_sort |
mechanics analysis of tipping bucket rain gauge |
publishDate |
2015 |
url |
http://ndltd.ncl.edu.tw/handle/97330112399391773420 |
work_keys_str_mv |
AT jhanmingjhou mechanicsanalysisoftippingbucketraingauge AT zhōuzhǎnmíng mechanicsanalysisoftippingbucketraingauge AT jhanmingjhou qīngdòushìyǔliàngjìzhīlìxuéfēnxī AT zhōuzhǎnmíng qīngdòushìyǔliàngjìzhīlìxuéfēnxī |
_version_ |
1718449817358696448 |