LTC 水位仪水压和盐度系统误差的检验与校正
Test and calibration of water pressure and salinity measurement by using a LTC Levelogger Junior
查看参考文献14篇
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文摘
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LTC(Level,Temperature,Conductivity)水位仪是一种用来监测水位、水温和电导率的仪器,体积小和使用方便等特点使其广泛应用于地下水动态及海水入侵监测,但随着使用时间增长,其水压和盐度系统误差会增加,而这一误差却经常被忽略。通过一种简单有效的方法对52个LTC水位仪水压和盐度的测量进行系统误差检验与校正。统计分析表明,在一定条件下分别有71. 2%和90. 4%的LTC水位仪测量水压和盐度的误差超出了仪器本身精度。对于超出仪器本身精度的LTC水位仪进行系统误差校正,水压和盐度的真实值与测量值呈线性关系,不同LTC水位仪线性校正系数的值也不同。校正前水压和盐度的误差范围分别为- 2. 08 ~ 5. 21 cm和- 10. 77 ~ 2. 03 g /L,校正后误差范围分别为± 1 cm和± 1 g /L。测试结果表明,用LTC水位仪野外监测时,应事后进行水压和盐度系统误差的检验和校正,以保证和提高采集数据的质量。 |
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其他语种文摘
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The LTC Levelogger Junior is one of the most small and convenience instruments in monitoring groundwater level,temperature and electrical conductivity. It is widely used in monitoring groundwater dynamics and seawater intrusion. The system error of water pressure and salinity will increase over time and is always ignored. In this paper,a simple and effective method is proposed to test and calibrate the system error of water pressure and salinity by using the 52 LTC Levelogger Juniors in laboratory. Statistical analyses indicate that almost 71. 2% and 90. 4% of the LTC Levelogger Juniors exceed the system accuracy when measuring water pressure and salinity,respectively. The system error is calibrated in this paper. It turns out to be a good linear relationship between the measured and actual values of pressure and salinity. Each LTC Levelogger Junior has different calibrated parameters. The system error of water pressure and salinity ranges from - 2. 08 cm to 5. 21cm and from - 10. 77 g /L to 2. 03 g /L,respectively,before calibration,but ranges from - 1 cm to 1 cm and from - 1 g /L to 1 g /L,respectively,after calibration. The results show that the LTC Levelogger after should be test and calibrated before applied in the field. |
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来源
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水文地质工程地质
,2018,45(4):15-20 【扩展库】
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DOI
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10.16030/j.cnki.issn.1000-3665.2018.04.03
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关键词
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LTC 水位仪
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误差校正
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盐度
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水压
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地址
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1.
南方科技大学环境科学与工程学院, 广东, 深圳, 518055
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中国地质大学(北京)水资源与环境学院, 北京, 100083
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3665 |
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学科
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地质学 |
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基金
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国家重点基础发展973计划
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文献收藏号
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CSCD:6279482
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参考文献 共
14
共1页
|
|
1.
Shope C L. A weighted, multi-method approach for accurate basin-wide stream flow estimation in an ungauged watershed.
Journal of Hydrology,2013,494:72-82
|
CSCD被引
1
次
|
|
|
|
|
2.
董殿伟. 北京平原地下水水位监测网优化.
水文地质工程地质,2007,34(1):10-19
|
CSCD被引
25
次
|
|
|
|
|
3.
Satchithanantham S. Shallow groundwater uptake and irrigation water redistribution within the potato root zone.
Agricultural Water Management,2014,132:101-110
|
CSCD被引
5
次
|
|
|
|
|
4.
刘森. 莱州湾南岸地下咸水污染物示踪运移规律研究.
水文地质工程地质,2014,41(1):6-20
|
CSCD被引
1
次
|
|
|
|
|
5.
Guo Q N. Hydrodynamics in a gravel beach and its impact on the Exxon Valdez oil.
Journal of Geophysical Research,2010,115:1-21
|
CSCD被引
1
次
|
|
|
|
|
6.
Xia Y Q. A combined field and modeling study of groundwater flow in a tidal marsh.
Hydrology and Earth System Sciences,2012,16(3):741-759
|
CSCD被引
5
次
|
|
|
|
|
7.
Li H L. Long-term persistence of oil from the Exxon Valdez spill in two-layer beaches.
Nature Geoscience,2010,3(2):96-99
|
CSCD被引
18
次
|
|
|
|
|
8.
Cherry J A. Testing sea-level rise impacts in tidal wetlands: a novel in situ approach.
Methods in Ecology and Evolution,2015,6(12):1443-1451
|
CSCD被引
5
次
|
|
|
|
|
9.
Xiao K. Tidal groundwater flow and its ecological effects in a brackish marsh at the mouth of a large sub-tropical river.
Journal of Hydrology,2017,555:198-212
|
CSCD被引
6
次
|
|
|
|
|
10.
Ma Q. Estimation of seawater-groundwater exchange rate: case study in a tidal flat with a large-scale seepage face (Laizhou Bay,China).
Hydrogeology Journal,2014,23(2):265-275
|
CSCD被引
11
次
|
|
|
|
|
11.
Qu W J. Seawatergroundwater exchange and nutrients carried by submarine groundwater discharge in different types of wetlands at Jiaozhou Bay,China.
Journal of Hydrology,2017,555:185-197
|
CSCD被引
7
次
|
|
|
|
|
12.
Hou L J. Seawatergroundwater exchange in a Silty Tidal Flat in the South Coast of Laizhou Bay,China.
Journal of Coastal Research,2016,74:136-148
|
CSCD被引
9
次
|
|
|
|
|
13.
Wooster W S. Redefinition of salinity.
Deep-Sea Research,1969,16(3):321-322
|
CSCD被引
1
次
|
|
|
|
|
14.
Cox R A. The electrical conductivity/chlorinity relationship in natural sea water.
Deep-Sea Research I,1967,17(4):679-689
|
CSCD被引
1
次
|
|
|
|
|
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