Influence of sea level rise on saline water intrusion in the Yangtze River Estuary, China

Chen, Wei; Chen, Kuo; Kuang, Chunxiang; Zhu, David Z.; He, Lulu; Mao, Xiaodan; Liang, Hongyu; Song, Hao

doi:10.1016/j.apor.2015.11.002

Cited by 91 publications

(58 citation statements)

References 30 publications

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“…A skill value ranging between 0.65 and 1.0 indicates excellent performance. A very good performance is in the range of 0.5 to 0.65; a good performance is in the range of 0.2 to 0.5, and a skill value less than 0.2 represents a poor performance [56]. The formulas for MAE, RMSE, MAPE, and skill are given as: …”

Section: Metrics For Evaluation Of Model Performancementioning

confidence: 99%

Hazard Assessment of Typhoon-Driven Storm Waves in the Nearshore Waters of Taiwan

Chang

Shih

Chen

et al. 2018

Water

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Abstract:In Taiwan, the coastal hazard from typhoon-induced storm waves poses a greater threat to human life and infrastructure than storm surges. Therefore, there has been increased interest in assessing the storm wave hazard levels for the nearshore waters of Taiwan. This study hindcasted the significant wave heights (SWHs) of 124 historical typhoon events from 1978 to 2017 using a fully coupled model and hybrid wind fields (a combination of the parametric typhoon model and reanalysis products). The maximum SWHs of each typhoon category were extracted to create individual storm wave hazard maps for the sea areas of the coastal zones (SACZs) in Taiwan. Each map was classified into five hazard levels (I to V) and used to generate a comprehensive storm wave hazard map. The results demonstrate that the northern and eastern nearshore waters of Taiwan are threatened by a hazard level IV (SWHs ranging from 9.0 to 12.0 m) over a SACZ of 510.0 km 2 and a hazard level V (SWHs exceeding 12.0 m) over a SACZ of 2152.3 km 2 . The SACZs threatened by hazard levels I (SWHs less than 3.0 m), II (SWHs ranging from 3.0 to 6.0 m), and III (SWHs ranging from 6.0-9.0 m) are of 1045.2 km 2 , 1793.9 km 2 , and 616.1 km 2 , respectively, and are located in the western waters of Taiwan.

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Section: Metrics For Evaluation Of Model Performancementioning

confidence: 99%

Hazard Assessment of Typhoon-Driven Storm Waves in the Nearshore Waters of Taiwan

Chang

Shih

Chen

et al. 2018

Water

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“…A skill value ranging between 0.65 and 1.0 indicates excellent performance. Very good performance is in the range of 0.5-0.65; good performance is in the range of 0.2-0.5; and a skill value less than 0.2 expresses poor performance [44]:…”

Section: Model Performance Indicatorsmentioning

confidence: 99%

“…This straightforward approach has been widely adopted to investigate the effects of SLR on coastal hydrodynamics and tidal energy resources [19,44,49,50]. TCP outputs were also calculated by Equations (6) and (7) Figure 10b).…”

Section: Influence Of Sea-level Rise On Tidal Current Power Outputmentioning

confidence: 99%

“…All boundary and bathymetry conditions are kept constant except for increasing the water depth by 0.25 m, 0.5 m, 0.75 m and 1.0 m over the entire computational domain and open boundaries. This straightforward approach has been widely adopted to investigate the effects of SLR on coastal hydrodynamics and tidal energy resources [19,44,49,50]. TCP outputs were also calculated by Equations (6) and (7) with an incremental t C , a cut-in speed of 0.…”

Section: Influence Of Sea-level Rise On Tidal Current Power Outputmentioning

confidence: 99%

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Tidal Current Power Resources and Influence of Sea-Level Rise in the Coastal Waters of Kinmen Island, Taiwan

Chen

Lin

et al. 2017

Energies

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Abstract:The tidal current power (TCP) resource, the impact of TCP extraction on hydrodynamics and the influence of sea-level rise (SLR) on TCP output in the coastal waters of Kinmen Island (Taiwan) are investigated using a state-of-the-art unstructured-grid depth-integrated numerical model. The model was driven by eight tidal constituents extracted from a global tidal prediction model and verified with time series of measured data for tide level and depth-averaged current. The simulations showed reasonable agreement with the observations; the skill index was in the excellent (0.71-0.93) range with regard to simulating tide level and currents. Model predictions indicated that the channel between Kinmen and Lieyu serves as an appropriate site for deploying the tidal turbines because of its higher tidal current and deeper water depth. The bottom friction approach was utilized to compute the average TCP over a spring-neap cycle (i.e., 15 days). Mean TCP reached its maximum to 45.51 kW for a coverage area of 0.036 km 2 when an additional turbine friction coefficient (C t ) increased to 0.08, and a cut-in speed of 0.5 m/s was used. The annual TCP output was estimated to be 1.08 MW. The impact of TCP extraction on the change in current is significant, with a maximum reduction rate of instant current exceeding 60%, and the extent of influence for the average current is 1.26 km in length and 0.30 km in width for the −0.05 m/s contour line. However, the impact of TCP extraction on the change in tide level is insignificant; the maximum change in amplitude is only 0.73 cm for the K 2 tide. The influence of SLR on the TCP output in Kinmen waters was also estimated. Modeling assessments showed that due to SLR produces faster tidal current, the annual TCP output increased to 1.52 MW, 2.01 MW, 2.48 MW and 2.97 MW under the same cut-in speed and coverage area conditions when SLR 0.25 m, SLR 0.5 m, SLR 0.75 m and SLR 1.0 m were imposed on the model.

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“…Estuary reservoirs as important water sources for cities in estuarine areas of the world, are strongly influenced both by estuarine ecologic changes and anthropic activities in surrounding areas [1][2][3]. In recent years, due to the extensive use of antibiotics in the world, the ecological environments in estuarine areas are facing serious ecological threats.…”

Section: Introductionmentioning

confidence: 99%

The Effects of Antibiotics on Microbial Community Composition in an Estuary Reservoir during Spring and Summer Seasons

Jiang

et al. 2018

Water

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Abstract:The increased antibiotic pollutants in aquatic environments pose severe threats on microbial ecology due to their extensive distribution and antibacterial properties. A total of 16 antibiotics including fluoroquinolones (FQs) (ofloxacin (OFX), ciprofloxacin (CFX), norfloxacin (NFX)), Sulfonamides (SAs) (sulfamonomethoxine (SMM), sulfadiazine (SDZ), sulfaquinoxaline (SQX)), Tetracyclines (TCs) (tetracycline (TC), doxycycline (DC)), β-lactams (penicillin G (PEN G), penicillin V (PEN V), cefalexin (LEX)), Macrolides (MLs) (erythromycin-H 2 O (ETM), tylosin (TYL)) and other antibiotics (Polymix-B (POL), Vancomycin (VAN), Lincomycin (LIN)) were detected in the surface water of the Qingcaosha Reservoir. Multivariate statistical analysis indicated that both water quality and physicochemical indexes have less contributions on variations of these antibiotics, suggesting the concentrations of antibiotics inside the reservoir are mainly affected by upstream runoff and anthropic activity along the river. Antibiotics including TYL, PEN G and ETM showed significant correlations with variations of bacterial community composition, and closely connected with various gram-negative bacteria in co-occurrence/exclusion patterns of the network, suggesting these bacterial taxa play important roles in the course of migration and transformation of related antibiotics. In conclusion, further research is required to evaluate the potential risk of genetic transfer of resistance to related bacteria induced by long-term exposure to low levels of antibiotics in the environment.

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Influence of sea level rise on saline water intrusion in the Yangtze River Estuary, China

Cited by 91 publications

References 30 publications

Hazard Assessment of Typhoon-Driven Storm Waves in the Nearshore Waters of Taiwan

Hazard Assessment of Typhoon-Driven Storm Waves in the Nearshore Waters of Taiwan

Tidal Current Power Resources and Influence of Sea-Level Rise in the Coastal Waters of Kinmen Island, Taiwan

The Effects of Antibiotics on Microbial Community Composition in an Estuary Reservoir during Spring and Summer Seasons

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