Justification and selection of a method for restricting water inflow to horizontal wells in low-permeability terrigenous reservoir conditions using the example of the YuS2 formatio... by Olga V. Savenok, Nailya Kh. Zharikova, Elizaveta P. Chuykova, Alexander E. Verisokin, Mahmoud Hadid, Larisa V. Povarova, Denis S. Kalashnikov, Anna S. Domanova

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Analysis on Characteristics of Spatial-temporal Precipitation Distribution in Qingyuan Based on Cloud Model by WANG Yan

“…Based on the traditional Mann-Kendall method,this paper analyzes the spatial-temporal precipitation distribution by the cloud model according to the monthly precipitation data (1990—2020) from 38 stations in Qingyuan City,Guangdong province.The results show that:①In the last 30 years,the precipitation in Qingyuan showed an upward trend in the whole year,flood season and non-flood season,especially in the whole year and flood season.②The stability of precipitation was best in non-flood season,less in whole year,and the worst in flood season.The distribution of precipitation was the most discrete throughout the year,followed by flood season,and more concentrated in non-flood season.③The precipitation showed similar spatial distribution in whole year and flood season,increased from northwest to southeast in general,among them the precipitation in Lianzhou City is small,concentrated and stable.In non-flood season,the distribution of precipitation increased from southeast to northwest,among them the precipitation in the south of Qingcheng District is the least and unstable but concentrated;while that in the northeast of Yingde City is large and stable but not concentrated.…”
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Response of Extreme Hydrological Events to Climate Change in the Water Source Area for the Middle Route of South-to-North Water Diversion Project by Wei Yang, Liping Zhang, Lijie Shan, Xinchi Chen, Shaodan Chen

“…The upper Hanjiang is also one of the most flood-prone rivers in China. This paper explores the process of extreme floods by using multivariate analysis to characterize flood and precipitation event data in combination, for historical data and simulated data from global climate models. …”
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Application of HEC-RAS in 2D Dam Break Simulation-A Case Study of Hongqi Reservoir by HUANG Binbin, GE Liming, XU Xian, WANG Yue

“…This paper simulates the dam break of Hongqi reservoir by HEC-RAS software,studies the discharge hydrograph of breach,the local flow pattern downstream of the breach,the propagation of dam break flood wave in flood area and the life loss caused by dam break flood,discusses the distribution of flood velocity and flood inundation depth,and draws the risk map of inundation depth.After analysis of the discharge hydrograph of breach,it is found that the larger the instantaneous breach size is,the greater the initial discharge is,and the faster the initial discharge hydrograph changes,while the smaller the breach size is,the slower the discharge hydrograph changes.Based on the evaluation of life loss caused by dam break flood,the loss of life and its severity coefficient are lower when the alarm time is longer.When there is no alarm,the life loss reaches 210.When the alarm time is 1 hour,the loss of life is obviously reduced,and the life loss is 0 when the alarm time is 3.5 hours.…”
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Temporal and Spatial Characteristics of Tidal Current in the Eastern Waters of Macao in Summer by FANG Shenguang, HUANG Chunhua, YU Fenghua, WANG Shijun, HE Yong

“…The eastern waters of Macao at the Pearl River Estuary are an important channel for water and sediment discharged by the west beach of Lingdingyang Estuary and Macao waterway.The measured data during the flood seasons shows that the waters feature semi-diurnal tidal currents,and the average velocity in this area is about 21~23 cm/s during the flood and 18~29 cm/s during the ebb.The flowing direction is stable,namely,N—NNW trending during the flood and S trending during the ebb,and tidal power is stronger in the south.The average velocity in the waters is mainly dependent on the tidal type,and the flood runoff mainly affects residual currents and tidal duration.A stagnant area is formed in the north of the waters during the flood,and the water and sediment in the south are transported outside the Lingdingyang Estuary.Wind on the sea surface has a significant impact on the vertical dynamic structure of flow in the range of 40% water depth,and residual flow direction in the range of 10% water depth near the sea surface has a good follow-up.During southwest wind,the maximum horizontal flow velocity gradient appears in the second flood and ebb stage and corresponds to the occurrence of the maximum sediment concentration in the tidal cycle.Due to the shallow water depth in the north of the waters,the bed shear gradient force is generally greater than that in the south.As a result,the sediment concentration observed in the north of the waters is significantly higher than that in the southeast.According to the comprehensive analysis,astronomical tides,flood runoff,and wind are the main controlling dynamic factors in the waters.The friction resistance of shallow water in the north is drastically larger than that in the south,which leads to a significant difference in tidal duration and phases of vertical floods and ebbs.As a consequence,the special vertical dynamic structure of convergence on the surface and dispersion at the bottom is formed in the waters,which is strengthened by massive freshwater runoffs during the flood seasons.This leads to the trend of surface diluted water drifting to the east and the invasion of the nearshore by bottom high-salt water.…”
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Analysis of Hot Spots in Watershed Runoff Generation and Concentration Based on Bibliometrics by HU Jinhui, SUN Yingna, WANG Ning, LI Zan

“…At present,the CiteSpace is rarely applied in the field of hydrology.Compared with other similar applications,this software can analyze data easily and generate visual map flexibly.Based on that,using CiteSpace to analyze the hot spots of watershed runoff generation and concentration can provide some references to scholars.Through the CNKI database,1 046 journals and academic papers from 1999 to 2020 are retrieved with “runoff generation and concentration”,“model” and “flood” as the subject terms.Based on the analysis functions of CNKI and CiteSpace,the results show that:among the Keyword co-occurrence map,the domestic hot spots in the field of watershed runoff generation and concentration include “Flood Forecast”,“Distributed Hydrological Model”,“Xin'an River Model”,“Urbanization”,“SWMM Model”,“Underlying Surface”,etc.By using the clustering function,the relevant research can be divided into “Flood Forecast”,“Control of Urban Flood”,“Geographic Information System”,and “Flood Disaster”.According to the clustering timeline diagram,“Simulation of Runoff Generation and Concentration in Hydrological Cycle” and “Simulation of Urban Flood Control Construction by Low-impact Development Concepts and SWMM Model” are current hot spots.Finally,detailed analysis related to those two hot spots are presented.…”
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Design of Hydrological Telemetry System Based on NB-IoT Communication Technology by ZHANG Xinmeng, LIU Shuyang, WANG Canhui

“…With the progress in society and information technology, the rapid emergency response capability for urban flood,drought,and wind prevention needs to be improved.Given the demand, this paper adopts the low-power Internet of Things (NB-IoT) communication technology to design water and rain telemetry terminals in the way of product integration instead of traditional system integration.This technology further reduces the dependence of the equipment on the external environment and improves the stability and reliability of the front-end data acquisition of the hydrological telemetry system,making it possible to deploy the hydrological telemetry terminal for monitoring on a large scale.According to urban emergency prevention and control requirements,Guangzhou Nansha District Flood and Drought Prevention Headquarters Office constructed a new generation of hydrological telemetry system with low cost,strong scalability,and high reliability.By quickly covering urban flood risk points,the system can master real-time water and rain data in the key position of Nansha District to assist the emergency decision,improve emergency response capabilities,and realize the precise distribution of flood control forces,thus reducing the property losses for urban residents.The results show that the hydrological telemetry system based on NB-IoT communication technology applied on a large scale for the first time in Guangzhou can provide efficient data support for dealing with various disasters in flood seasons.…”
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Historique des crues et risque d’inondation dans la vallée de la Meurthe depuis le XVIIIe siècle by Claire Delus, Éric Bonnot, Didier François, Thomas Lejeune, Xavier Rochel, Denis Mathis, Jean Abèle

“…This work presents the results of the flood history of the river Meurthe carried out as part of the development of an Action and Flood Prevention Programme (PAPI). …”
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Spatio-Temporal Simulation of Hydrological Elements and Disaster Causes in Beijiang River Basin by ZHANG Kangtao, LEI Weidong

“…Comprehensively, the southeastern region, located downstream, faces a higher risk of combined flood and geological hazards during the flood season.…”
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HEC-RAS Model of Kahramanmaras Domuz (Bogaz) Stream Interception Channel by Burcu Ercan, Ayşe Ece Yağcı, Mehmet Ünsal

“…One of the disasters, flood formation may be human or nature-originated. …”
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Relationship between Particle Size Distribution and Pollutant Content during the Transport of Storm Runoff by GAO Aiping, HUANG Tinglin, MA Xu, ZHANG Guorong, FAN Wenwei, QI Yunzhi, ZHANG Bo, DU Juanjuan, CUI Hongjun

“…Flood season runoff is an important factor affecting reservoir operation, and timely understanding of the runoff transport and the corresponding water quality responses during flood season can provide suggestions for reservoir operation. …”
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Encounter Risk Analysis of Rainfall and Tide in Shenzhen Based on Copula Function by SHI Yunyun, YAO Hangbin, WAN Donghui, ZHENG Xinqian

“…The disasters of encounter of extreme rainstorm and high tide level will aggravate the flood in coastal cities.In order to explore the impact of the encounter of rainstorm and tide on flood control and drainage in coastal cities,based on the annual maximum 1 day rainfall and its corresponding tide level data of Chiwan Station in Shenzhen from 1967 to 2018,the Copula function is used to construct a joint distribution model of annual maximum 1 day rainfall and its corresponding tide level,and the co-occurrence risk,the flood control risk,the condition risk and the combination risk of rain and tide in Shenzhen are calculated and analyzed.The results show that the risk of the encounter of rain and tide in Shenzhen is small,and the co-occurrence and combination risk probability of rainfall whose return period greater than 100 years and tidal level whose return period greater than 200 years are only 0.12% and 0.09%.The probability of the occurrence of rainfall or tide exceeding the standard magnitude is 1.09%,and its return period is less than 100 years.When the rainfall exceeds the standard magnitude,the probability of encountering an over-standard tide level is greater,with a probability of 12.33%.At the same time,with the increase of rainfall,the risk will also increase.Therefore,in the planning and design of flood and tide prevention and drainage in cities,the focus should be on attention and prevention.…”
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Multidrug-resistant ESBL E. coli in urban surface waters and public health implications: A Case Study from Goranchatbari, Dhaka by Md. Sakib Hossain, Ahmed Ishtiaque Amin Chowdhury, Mohammad Rafiqul Islam, Ripan Kirtunia, Md. Foysal Abedin, Mohammad Atique Ul Alam, Shampa, Sonia Binte Murshed, Md Shadman Sakib, Siam Alam, M. Shahjahan Mondal, Zahid Hayat Mahmud

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Analysis of Earth Dam Break of a Reservoir Based on BREACH Model by LIU Fengru, ZHAO Yuhao, ZHAN Damei

“…Frequent rain and flood may lead to earth dam break,resulting in serious consequences.Therefore,it is necessary to analyze the dam break and its impact.Based on the BREACH model,this paper studies the earth dam break of a reservoir.The results show that:in the piping dam break mode,with the increase of flood magnitude,the maximum breach discharge,final breach width and cumulative discharge also increase.Under the same flood magnitude,the maximum breach discharge and final average breach width of overtopping dam break are large,and the relative risk is great.In the given scheme,the earthquake emergency is safer than that in other schemes.In addition,the cumulative discharge is equal to the sum of initial storage capacity and inflow volume,which verifies the rationality of the calculation results from the model.…”
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The safe development paradox of the United States regulatory floodplain. by Georgina M Sanchez, Margaret A Lawrimore, Anna Petrasova, John B Vogler, Elyssa L Collins, Vaclav Petras, Truffaut Harper, Emma J Butzler, Ross K Meentemeyer

“…We posit that the regulatory 100-year floodplain presents a "safe development paradox", whereby attempts to reduce flood risk paradoxically intensifies it by promoting development in and near flood-prone areas. …”
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Impact of Climate Change on Hydrologic Extremes in the Upper Basin of the Yellow River Basin of China by Jun Wang, Zhongmin Liang, Dong Wang, Tian Liu, Jing Yang

“…The conclusions may provide technical supports for basin level planning of flood control and hydropower production.…”
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One-dimensional River Network Hydrodynamic Model Based on HLL Finite Volume Method: A Case Study of Jiaokou–Yinjiang Region by GU Weiwei, CHEN Longzan, ZHANG Jingsi, LI Weizheng, YANG Yanfei, ZHANG Weiguo

“…Additionally, during floods, this model exhibits high simulation accuracy, accurately reflecting the flood rise and recession processes as well as the timing of flood peaks. …”
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Hydrological Forecasting Technology and Its Application in Xizhijiang River Basin by XIE Hehai, LIANG Zhihong, ZHA Dawei, MA Xinghua

“…With the development of social economy, the problem of flood control caused by urbanization is more and more serious. …”
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Hydrological drought in the lower reaches of the Yangtze River (China): a 70-year data analysis by Hua Ge, Hua Ge, Lingling Zhu, Bing Mao, Bing Mao

“…The continuous decline in water availability during the flood season and the water storage of reservoirs after flooding made 2022 the most severe drought period in nearly 70 years. …”
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Development characteristics and river blocking outburst analysis of Shadong landslide in the upper reaches of Jinsha River by Shunxiang ZHENG, Jun WANG, Yong YAN, Wen LIU, Heng ZHAO, Junxiang YANG, Xiongan FAN, Yi ZHANG, Meng WANG, Tianbin YU

“…It is a high risk of developing into a disaster chain of landslide, river blockage, and flood, posing a serious threat to major engineering construction, transportation facilities, and people's lives and property. …”
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