Showing 701 - 720 results of 1,396 for search '"Hydrology"', query time: 0.04s Refine Results
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    Hydrodynamic Modeling of a Tropical Tidal River Using the Dynamic Estuary Model (DYNHYD5): A Case Study in Sibu Laut River, Sarawak, Malaysia by Chen-Lin Soo, Teck-Yee Ling, Lee Nyanti

    Published 2018-01-01
    “…Samplings were conducted in the Sibu Laut River to collect the hydrology data for model simulation. The model was calibrated and validated by comparing the simulated flow and mean depth with the field data at different simulation periods of time. …”
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  3. 703

    NON-NATIVE AND NATIVE INVASIVE TERRESTRIAL PLANT SPECIES IN COMANA NATURAL PARK. CASE-STUDIES: AMORPHA FRUTICOSA AND CRATAEGUS MONOGYNA by MONICA DUMITRAŞCU, INES GRIGORESCU, GHEORGHE KUCSICSA, CARMEN-SOFIA DRAGOTĂ, MIHAELA NĂSTASE

    Published 2011-12-01
    “…The authors have undertaken their investigation in relation to the key environmental driving forcesresponsible for their introduction and spread: natural driving forces (relief, lithology and soil, climate, hydrology, vegetation, etc.) and human-induced driving forces (agricultural practices, grazing, forest exploitation, transport network). …”
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    Spatial Dimension Analysis and Judgement of Abnormal Rainfalls by GAO Yueming, LIN Qinghua, LIU Shupiao, XU Chaoyang

    Published 2022-01-01
    “…The automatic reporting system of water levels and rainfalls is widely used in flood control,hydrology,and meteorology in China.The automatically measured rainfall data is one of the conditions triggering flood control early warning,and its quality and accuracy directly affect the credibility of the warning.In order to avoid false warnings,it is necessary to analyze and filter abnormal rainfalls in real time.This paper explored the correlation of rainfalls in spatial planes and compared the application effects of four statistical methods including the Pauta criterion,Chauvenet criterion,Grubbs test,and Dixon test in the spatial dimension,so as to infer whether the rainfall at a certain point is abnormal.Specifically,the Chauvenet criterion has the optimal comprehensive performance,and its accuracy,precision,recall rate,and F1 score are 0.86,0.78,0.83,and 0.80,respectively.In addition,the Grubbs test and Dixon test obtain similar results,but they both are slightly worse than the Chauvenet criterion since there may be many abnormal rainfalls in regional groups.The Pauta criterion has the worst performance,but its precision is the highest,which is 0.97.In addition,it is effective to optimize rainfalls that have been judged to be abnormal many times by algorithm flows,and the algorithm precision can be significantly improved.It has been proved that it is feasible to judge whether the rainfall at a certain point is abnormal from the spatial plane,which can effectively help water conservancy supervision departments to improve the quality of early warning and reduce labor costs.…”
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  9. 709

    Global Pollution of Surface Waters from Point and Nonpoint Sources of Nitrogen by G. van Drecht, A.F. Bouwman, J.M. Knoop, C. Meinardi, A. Beusen

    Published 2001-01-01
    “…For nonpoint N sources (agricultural and natural ecosystems), calculations are based on local hydrology, climate, geology, soils, climate and land use combined with data for 1995 on crop production, N inputs from N fertilizers and animal manure, and estimates for ammonia emissions, biological N fixation, and N deposition. …”
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  10. 710

    A New Weighting Scheme in Weighted Markov Model for Predicting the Probability of Drought Episodes by Zulfiqar Ali, Ijaz Hussain, Muhammad Faisal, Ibrahim M. Almanjahie, Muhammad Ismail, Maqsood Ahmad, Ishfaq Ahmad

    Published 2018-01-01
    “…In summary, this paper proposes a new weighting scheme to improve the accuracy of the WMC, specifically in the field of hydrology.…”
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    Climate Change Impact on the Trigger of Natural Disasters over South-Eastern Himalayas Foothill Region of Myanmar: Extreme Rainfall Analysis by Kyaw Than Oo, Chen Haishan, Kazora Jonah

    Published 2023-01-01
    “…The study examines the characteristics and variability of monsoon rainfall in Myanmar, focusing on the relationship between heavy rainfall, floods, and earthquakes, which impact agriculture, hydrology, and the environment. Generally, heavy rainfall can cause flooding, economic losses, and water table changes. …”
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    Spatiotemporal Evolution Law of Precipitation in Zhengzhou City Based on Multi-Source Data by JIANG Xi

    Published 2024-10-01
    “…The rise of precipitation data products provides new ideas for research in the field of hydrology and meteorology, as well as a strong data basis for hydrological forecasting and water resource management in areas lacking data. …”
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    Determining River Floodway and its Role in Development Sustainability of Human Habitation (Case Study: Totshami) by Mojtaba Yamani, Amir Moradi, Saeed Rahimi herabadi

    Published 2013-11-01
    “…In this regard, necessary statistics and information about the hydrology of the region were collected. Then they were analyzed, reconstructed and completed.In field surveys, a period of seven kilometers of river channels was chosen and their transverse profiles were drawn.Roughness coefficient confines of left and right channel was determined.Finally, using the HEC-RAS software, midst River floodgate for return periods 2, 5, 25, 50, 100 and 200 years was determined. …”
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