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1. A note on the recent use of tree-ring data to investigate a Sun-Amazon River link

Author:
Antico, Andrés; Torres, María E.
Source:
Journal of hydrology 2020 v.583 pp. 124623
ISSN:
0022-1694
Subject:
river flow; rivers; Amazon River,   etc   ; climate; growth rings; oxygen isotopes;     Show all 6 Subjects
Abstract:
... In a recent study, a tree-ring oxygen isotope record (1800–2013) was used as a proxy for Amazon River discharge in order to investigate a solar influence on this river. Here we reinterpreted the results from this study by improving the analyses of tree-ring data, and by considering the recommendations made by authors critical of Sun-climate link studies. We found that strong 1915–2018 evidences of ...
DOI:
10.1016/j.jhydrol.2020.124623

2. Seasonality in a tidal reach: Existence, impact and a possible approach for design flood level estimation

Author:
Tang, Yi-han; Chen, Xiao-hong
Source:
The Science of the total environment 2020 v.714 pp. 136478
ISSN:
0048-9697
Subject:
river deltas; rivers,   etc   ; case studies; tides; China;     Show all 5 Subjects
Abstract:
... Heterogeneity caused by seasonality could lead to the estimation error of the design flood level (DFL). This research intended to examine the existence of seasonality in the extreme water levels in a tidal reach and to quantify its impact on the DFL estimation. The mixed-distribution, a commonly used method for design value estimation with heterogeneous samples, was tested. A case study was carrie ...
DOI:
10.1016/j.scitotenv.2019.136478

3. Water governance in the Mekong after the Watercourses Convention 35th ratification: Multilateral or bilateral approach?

Author:
Ibrahim, Imad Antoine
Source:
International journal of water resources development 2020 v.36 no.1 pp. 200-220
ISSN:
1360-0648
Subject:
rivers; Mekong River,   etc   ; treaties; water management;     Show all 4 Subjects
Abstract:
... The possible negative consequences of changes that are occurring in the Mekong River because of development activities are raising concerns. Scholars have been wondering whether multilateral or bilateral water treaties can be used by the states sharing the river to protect their interests. Moreover, the UN Watercourses Convention’s entry into force has made researchers question its potential impac ...
DOI:
10.1080/07900627.2019.1636769

4. World Reservoirs: Analysis of Quantitative Characteristics and Their Effect on the Structure of Long-Term Runoff Variations of Regulated Rivers

Author:
Dobrovol’skii, S. G.; Lebedeva, I. P.; Istomina, M. N.; Solomonova, I. V.
Source:
Water resources 2020 v.47 no.1 pp. 1-12
ISSN:
0097-8078
Subject:
river water; rivers,   etc   ; asymmetry; hydrologic models; runoff;     Show all 5 Subjects
Abstract:
... Data on 388 world reservoirs and changes in the annual, maximal, and minimal runoff in the rivers they regulate at the same number of gages have been generalized over 102 items for each series. The existence of reservoirs has been shown to cause, on the average, an increase in the coefficients of variation and asymmetry for long-term variations of river runoff along with an increase in the correla ...
DOI:
10.1134/S0097807820010169

5. Optimal locations for flow and velocity sensors along a river channel

Author:
Zubelzu, Sergio; Rodríguez-Sinobas, Leonor; Segovia-Cardozo, Daniel; Díez-Herrero, Andrés
Source:
Hydrological sciences journal 2020 v.65 no.5 pp. 800-812
ISSN:
2150-3435
Subject:
rivers,   etc   ; monitoring; watersheds; Spain;     Show all 4 Subjects
Abstract:
... A novel methodology for the optimal placement of sensors in watercourses is presented. The methodology aimed at finding the optimal locations for the placement of sensors to maximize the amount of information to monitor flow and velocity in watercourses. The methodology is based on the maximization of the Gram determinant of the sensor responses at each possible location or a combination of locati ...
DOI:
10.1080/02626667.2019.1654610

6. Investigation of trapezoidal sharp-crested side weir discharge coefficients under subcritical flow regimes using CFD

Author:
Ghaderi, Amir; Dasineh, Mehdi; Abbasi, Saeed; Abraham, John
Source:
Applied water science 2020 v.10 no.1 pp. 31
ISSN:
2190-5487
Subject:
rivers,   etc   ; kinetic energy; weirs;     Show all 3 Subjects
Abstract:
... Side weirs are utilized to regulate water surface and to control discharge and water elevation in rivers and channels. Here, the discharge coefficient for trapezoidal sharp-crested side weirs (TSCSW) and their affecting parameters are numerically investigated. To simulate the hydraulic and geometric characteristics of TSCSWs, three weir crest lengths of 15 cm, 20 cm and 30 cm with lengths of 20 cm ...
DOI:
10.1007/s13201-019-1112-8

7. Origin, evolution, and sedimentary records of islands in large anabranching tropical rivers: The case of the Upper Paraná River, Brazil

Author:
Leli, Isabel T.; Stevaux, José C.; Assine, Mario L.
Source:
Geomorphology 2020 v.358 pp. 107118
ISSN:
0169-555X
Subject:
rivers; Parana River,   etc   ; Holocene epoch; databases; floodplains; islands; Brazil;     Show all 7 Subjects
Abstract:
... Anabranching patterns are characteristic of the largest rivers in the world. We have chosen to study the Paraná River because of its worldwide importance among the great rivers and the large database available from over four decades of research. In this paper, we present results on the classification, origin, evolutionary processes, and sedimentary records of islands that form anabranching pattern ...
DOI:
10.1016/j.geomorph.2020.107118

8. Decadal changes in sediment budget and morphology in the tidal reach of the Yangtze River

Author:
Yuan, Bing; Lin, Binliang; Sun, Jian
Source:
Catena 2020 v.188 pp. 104438
ISSN:
0341-8162
Subject:
rivers; Yangtze River,   etc   ; coasts; dams (hydrology); riparian areas; sediments; tides;     Show all 7 Subjects
Abstract:
... In the last few decades, riverine sediment flux to the coastal zones has been decreasing globally. The sediment flux from rivers to seas is usually estimated based on the lowermost gauging stations free of tides in the rivers, for example the Yangtze River. Knowledge of decadal sediment budget and the morphological evolution in the tidal reach is still limited. Here, using historical bathymetry of ...
DOI:
10.1016/j.catena.2019.104438

9. Luminescence dosimetry for evaluation of the external exposure in Metlino, upper Techa River valley, due to the shore of the Metlinsky Pond: A feasibility study

Author:
Woda, C.; Hiller, M.; Ulanowski, A.; Bugrov, N.G.; Degteva, M.O.; Ivanov, O.; Romanov, S.; Tschiersch, J.; Shinonaga, T.
Source:
Journal of environmental radioactivity 2020 v.214-215 pp. 106152
ISSN:
0265-931X
Subject:
river valleys; rivers,   etc   ; bricks; dosimetry; feasibility studies; radioactivity; thermoluminescence; Russia;     Show all 8 Subjects
Abstract:
... Luminescence dosimetry was performed using bricks from the former settlement of Metlino, Southern Urals, Russia, to investigate the feasibility of validating the Techa River Dosimetry System (TRDS) 2016 for the shore of the Metlinsky Pond, upper Techa River region. TRDS is a code for estimating external and internal doses for members of the Extended Techa River Cohort. Several brick samples were t ...
DOI:
10.1016/j.jenvrad.2019.106152

10. Flood disturbance, recovery, and inter-flood incision on a large sand-bed river

Author:
Gibson, Stanford; Shelley, John
Source:
Geomorphology 2020 v.351 pp. 106973
ISSN:
0169-555X
Subject:
rivers; Missouri River,   etc   ; floodplains; floods; incising; mining; sediments; surveys;     Show all 8 Subjects
Abstract:
... The lower 800 km of the Missouri River has been incising for decades. However, the 2011 flood scoured more sediment than the previous 12 yr combined. The river rebounded in the following two years, re-depositing over 70% of the sediment scoured during the 2011 flood. Historic evidence suggests that past Missouri River floods may have followed similar scour-rebound patterns. This paper analyzes 16 ...
DOI:
10.1016/j.geomorph.2019.106973

11. Correction to: Spatial distribution of heavy metals and their potential sources in the soil of Yellow River Delta: a traditional oil field in China

Author:
Miao, Xiongyi; Hao, Yupei; Zhang, Fawang; Zou, Shengzhang; Ye, Siyuan; Xie, Zhouqing
Source:
Environmental geochemistry and health 2020 v.42 no.2 pp. 709
ISSN:
0269-4042
Subject:
river deltas; Yellow River,   etc   ; heavy metals; oil fields; soil; China;     Show all 6 Subjects
Abstract:
... In the original publication of the article, the sixth author name “Zhouqing Xie” has been misspelt. The correct name is given in this correction. The original version of this article was revised. ...
DOI:
10.1007/s10653-019-00243-4

12. Hydraulic analysis of a meander on the Danube River using a 2D flow model

Author:
Horvat, Zoltan; Horvat, Mirjana; Majer, Fruzsina; Koch, Dániel
Source:
Environmental monitoring and assessment 2020 v.192 no.2 pp. 149
ISSN:
0167-6369
Subject:
rivers; Danube River,   etc   ; dredging; mathematical models; model validation; sediment deposition;     Show all 6 Subjects
Abstract:
... This paper presents the development, calibration and verification of a two-dimensional model for a Danube reach and its old cutoff meander. The considered meander was at one point separated from the main reach with a levee, which caused a series of unwanted environmental consequences. Aiming to stop the ongoing degradation of the meander, the validated model was engaged to investigate the effects ...
DOI:
10.1007/s10661-020-8074-z

13. Prediction of River Stage-Discharge Process Based on a Conceptual Model Using EEMD-WT-LSSVM Approach

Author:
Farhad Alizadeh,; Gharamaleki, Alireza Faregh; Jalilzadeh, Mojtaba; Akhoundzadeh, Ali
Source:
Water resources 2020 v.47 no.1 pp. 41-53
ISSN:
0097-8078
Subject:
river flow; rivers,   etc   ; models; prediction; support vector machines; wavelet;     Show all 6 Subjects
Abstract:
... This study proposed a hybrid pre-processing approach along with a conceptual model to enhance the accuracy of river discharge prediction. In order to achieve this goal, Ensemble Empirical Mode Decomposition algorithm (EEMD), Wavelet transform (WT) and Mutual Information (MI) were employed as a hybrid pre-processing approach conjugated to Least Square Support Vector Machine (LSSVM). For this end, a ...
DOI:
10.1134/S0097807820010066

14. The effects of extremes and temporal scale on multifractal properties of river flow time series

Author:
Hekmatzadeh, Ali Akbar; Torabi Haghighi, Ali; Hosseini Guyomi, Kianoosh; Amiri, Seyed Mehrab; Kløve, Bjørn
Source:
River research and applications 2020 v.36 no.1 pp. 171-182
ISSN:
1535-1459
Subject:
river flow; rivers,   etc   ; stream flow; time series analysis;     Show all 4 Subjects
Abstract:
... For accurate forecasting of extreme events in rivers, streamflow time series with sub‐daily temporal resolution (1–6 hour) are preferable, but discharge time series for long rivers are usually available at daily or monthly resolution. In this study, the scaling properties of hourly and daily streamflow time series were measured. As an innovation, the effects of extreme values on the multifractal b ...
DOI:
10.1002/rra.3550

15. Incompleteness of the geological record in Middle-Upper Pleistocene key sections of the Northern Caspian Lowland

Author:
Svitoch, A.A.; Makshaev, R.R.
Source:
Quaternary international 2020 v.540 pp. 78-96
ISSN:
1040-6182
Subject:
river water,   etc   ; Pleistocene epoch; watersheds;     Show all 3 Subjects
Abstract:
... Pleistocene key sections of the Northern Caspian Lowland are characterized by the incompleteness of the geological record, which is presented in depositional breaks, their duration, causes, and types. Depositional breaks occurred in all periods of the Middle and the Late Pleistocene and occupied various time intervals, usually quite continuous – from ∼180 ka (Cherny Yar) to 100–110 ka (Alexandrov ...
DOI:
10.1016/j.quaint.2019.04.030

16. Comparative Analysis of Models of Thermoerosion-Induced Channel Deformations in Rivers of Permafrost Zone

Author:
Debol’skaya, E. I.; Ivanov, A. V.
Source:
Water resources 2020 v.47 no.1 pp. 77-86
ISSN:
0097-8078
Subject:
rivers,   etc   ; deformation; mathematical models; permafrost;     Show all 4 Subjects
Abstract:
... Studies of erosion processes in river channels of the permafrost zone are reviewed. Mathematical models of thermal erosion and the deformations it induces are discussed in different formulations; the results of numerical calculations by two models are compared with one another and with laboratory measurement data. The major factors that have an effect on channel transformations in permafrost-zone ...
DOI:
10.1134/S0097807820010054

17. Effects on fluvial discharges of the 2016 Kumamoto earthquakes, Japan

Author:
Ichiyanagi, Kimpei; Imatsu, Minato; Ide, Kiyoshi; Shimada, Jun
Source:
Journal of hydrology 2020 v.583 pp. 124600
ISSN:
0022-1694
Subject:
river flow; river water; rivers,   etc   ; earthquakes; gauges; groundwater; mountains; permeability; streams; Japan;     Show all 10 Subjects
Abstract:
... The 2016 Kumamoto earthquakes comprised an Mw 6.2 foreshock and an Mw 7.0 mainshock that occurred at 21:26 JST on April 14 and at 01:25 JST on April 16, respectively. Ruptures and vibrations associated with these earthquakes induced effects on streams' discharge in Kumamoto and Oita prefectures; however, few studies have conducted comprehensive investigation of such changes in those areas. In this ...
DOI:
10.1016/j.jhydrol.2020.124600

18. Spatial and big data analytics of E-market transaction in China

Author:
Ye, Xinyue; Lian, Zeng; She, Bing; Kudva, Sonali
Source:
GeoJournal 2020 v.85 no.2 pp. 329-341
ISSN:
0343-2521
Subject:
river deltas; rivers; Yangtze River,   etc   ; data analysis; economic development; industry; models; population density; China;     Show all 9 Subjects
Abstract:
... This study uses a big data approach and gravity model to quantify the scope and sources of online transactions in urban China and explore the driving forces, based on data from the Taobao platform for online cellphone transactions from June to December in 2011. Comparison among Jing-Jin-Ji Region, Yangtze River Delta, and Pearl River Delta shows that a higher level of economic development correspo ...
DOI:
10.1007/s10708-018-09964-y

19. Adaption of a formula for simulating bedload transport in the Nile River, Egypt

Author:
Abdelhaleem, Fahmy Salah; Amin, Ahmed Mostafa; Basiouny, Mohamed Elsayed; Ibraheem, Heba Fathy
Source:
Journal of soils and sediments 2020 v.20 no.3 pp. 1742-1753
ISSN:
1439-0108
Subject:
river engineering; rivers; Nile River,   etc   ; bedload; equations; hydraulic flumes; laboratory experimentation; prediction; sand; sediment transport; Egypt;     Show all 11 Subjects
Abstract:
... PURPOSE: Bedload transport discharge is important in river engineering and morphodynamics. The Meyer-Peter and Müller (MPM) equation for determining bedload transport rates that was introduced in 1948 is still widely used in basic and applied engineering practise. An employment of the MPM equation for sand bed rivers is rarely observed as it usually performs well for gravel-bed rivers. The MPM equ ...
DOI:
10.1007/s11368-019-02528-8

20. The Hongqiaocun Site: The earliest evidence of ancient flood sedimentation of the water conservancy facilities in the Chengdu Plain, China

Author:
Huang, Ming; Zhu, Cheng; Ma, Chunmei; Yang, Zhanfeng; Liu, Yumao; Jia, Tianjiao
Source:
Catena 2020 v.185 pp. 104296
ISSN:
0341-8162
Subject:
rivers; Yangtze River; Yellow River,   etc   ; barium; floods; hydrodynamics; irrigation; water conservation; watersheds; zircon; China;     Show all 11 Subjects
Abstract:
... The earliest water conservancy facilities in the Chengdu Plain were found at the Hongqiaocun Site of about 4.0 ka before present, nearly 2,000 years earlier than the world-famous Dujiangyan Irrigation Project. In order to understand the background of the construction of the water conservancy project, we sampled and analyzed the ancient river profile TS20W13 near the water conservancy facilities. S ...
DOI:
10.1016/j.catena.2019.104296