Reconsideration of evaluating design flood level at Imjin River estuary

2017 ◽  
Vol 50 (9) ◽  
Keyword(s):  
River Estuary ◽  
Design Flood ◽  
Flood Level

scholarly journals COMBINING COASTAL DESIGN-FLOOD ELEVATIONS AND SEA LEVEL RISE PROJECTIONS

2012 ◽  
Vol 1 (33) ◽  
pp. 26
Author(s):  
James Houston
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Design Consideration ◽  
Design Flood ◽  
Intergovernmental Panel ◽  
Flood Level ◽  
Rising Sea Level ◽  
And Sea Level

Design-flood elevations with associated exceedance probabilities are often determined for coastal projects. Rising sea level introduces another design consideration that needs to be combined with the design-flood level. However, most sea level projections do not have exceedance probabilities that can be used in conjunction with the design flood to obtain total flood elevations with exceedance probabilities. This paper shows how to combine design-flood elevations with sea level rise projections that have exceedance probabilities, such as those of the Intergovernmental Panel for Climate Change (Bindoff et al 2007) or Houston (2012a), to obtain total elevations at desired exceedance probabilities over particular intervals.

Influences of Topographical Change of Qiantang River on Design Flood of Puyang River

2013 ◽  
Vol 405-408 ◽  
pp. 2064-2067
Author(s):  
Tao Ding ◽  
Li Ming Liu
Keyword(s):  
Human Activities ◽  
Climate Changes ◽  
Considerable Change ◽  
Zhejiang Province ◽  
Design Flood ◽  
Two Dimension ◽  
Qiantang River ◽  
Flood Level ◽  
The Impact

Since the Puyang River in Zhejiang province is easily influenced by tidal backwater of Qiantang River, its design flood level also fluctuates with topographical change of Qiantang River. The topography of Qiantang River has taken place considerable change by climate changes and human activities in recent years, and it had caused flood level of Wenyan station obvious rise from 0.22m to 0.89m, which produces great impact on flood level of Puyang River. This paper adopted the two-dimension numeral model to simulate the impact on flood level of the Puyang River which is caused by tidal backwater of Qiantang River. The results indicate that flood levels of Meichi satiation rise 3-30cm, and which of Linpu satiation rise 4-76cm when they respectively encounter with flood of Qiantang River from once every 100 years to once every 5 years. From the results, we can see the change of topographical of Qiantang River in recent years produces great impact on flood level of the Puyang River.

Design of Remote Reservoir Water Level Monitoring System Based on GPRS

2013 ◽  
Vol 475-476 ◽  
pp. 86-89
Author(s):  
Hong Xu ◽  
Yong Jun Zhang
Keyword(s):  
Water Level ◽  
Monitoring System ◽  
High Precision ◽  
Sensor Data ◽  
Design Flood ◽  
Remote Communication ◽  
Reservoir Water ◽  
Flood Level ◽  
Level Monitoring ◽  
Water Level Monitoring

in order to understand the situation of design flood level, a water level monitoring system based on ARM7. The ARM7 high performance microprocessor LPC2132 as the core, uses the high precision AD converter TLC2543 data collection, combined with the system software and hardware design of GPRS transmission network, including the water level sensor data acquisition, remote transmission of GPRS messages, human-computer interaction module C/OS-II operating system with multiple components, the system design, to achieve the level of information the remote communication by using short message. The experimental results show that: the system to collect data of high precision, stable and reliable transmission, effectively realizes the real-time monitoring of water level data.

scholarly journals Investigating an Innovative Sea-Based Strategy to Mitigate Coastal City Flood Disasters and Its Feasibility Study for Brisbane, Australia

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2744
Author(s):  
Usman Khalil ◽  
Shu-Qing Yang ◽  
Muttucumaru Sivakumar ◽  
Keith Enever ◽  
Mariam Sajid ◽  
...  
Keyword(s):  
Water Level ◽  
Feasible Solution ◽  
River Estuary ◽  
Gate Operation ◽  
Flood Peak ◽  
Coastal City ◽  
Flood Level ◽  
Height Datum ◽  
Level Reduction ◽  
Management Operation

This study examines an innovative Coastal Reservoir (CR) technique as a feasible solution for flood adaptation and mitigation in the Brisbane River Estuary (BRE), Australia, which is vulnerable to coastal flooding. The study analysed the operation of a CR by using the MIKE 21 hydrodynamic modelling package. The 2D hydrodynamic model was calibrated and validated for the 2013 and 2011 flood events respectively, with a Nash-Sutcliffe coefficient (Ens) between 0.87 to 0.97 at all gauges. River right branch widening and dredging produced a 0.16 m reduction in water level at the Brisbane city gauge. The results show that by suitable gate operation of CR, the 2011 flood normal observed level of 4.46 m, with reference to the Australian Height Datum (AHD) at Brisbane city, could have been reduced to 3.88 m AHD, while under the improved management operation of the Wivenhoe Dam, the flood level could be lowered to 4 m AHD at Brisbane city, which could have been reduced with CR to 2.87 m AHD with an overall water level reduction below the maximum flood level. The results demonstrated that the innovative use of a CR could considerably decrease the overall flood peak and lessen flood severity in the coastal city of Brisbane.

Study on Evolution of River Bed and Flood Prediction at Lanzhou Section of Yellow River

2013 ◽  
Vol 328 ◽  
pp. 304-307
Author(s):  
Jian Lin Li ◽  
Le Han ◽  
Hong Yun Zhang
Keyword(s):  
Yellow River ◽  
Surface Profile ◽  
River Engineering ◽  
Engineering Model ◽  
Design Flood ◽  
Flood Prediction ◽  
Lanzhou City ◽  
River Bed ◽  
Flood Level ◽  
Hydrologic Data

Yellow River through Lanzhou city, so flood prevention is a very important for Lanzhou city. On the basis of the hydrologic data from 1951 to 2011 year, using river engineering model experiment, design flows and design flood hydrograph of Lanzhou section of Yellow River was simulated. On the basis of the hydrologic data from 1951 to 2011 year, evolution of river bed at Lanzhou section of Yellow River was analyzed. Sedimentation has been increasing slowly since 60 years. By the river engineering model experiments, a river-dredging plan, river width is planned 300 m, had been put forwarded. And the design flood level and water surface profile in different design flood (5600 m3/s,6500 m3/s,7920 m3/s,8350 m3/s) of Lanzhou section are gotten. It is forecast that occurrence of deluge is possible.

Climate-associated trends and variability in ichthyoplankton phenology from the longest continuous larval fish time series on the east coast of the United States

2020 ◽  
Vol 650 ◽  
pp. 269-287
Author(s):  
WC Thaxton ◽  
JC Taylor ◽  
RG Asch
Keyword(s):  
United States ◽  
Environmental Variability ◽  
Larval Fish ◽  
Interspecific Interactions ◽  
River Estuary ◽  
Atlantic Multidecadal Oscillation ◽  
The United States ◽  
Larval Survival ◽  
Ecological Communities ◽  
Northerly Wind

As the effects of climate change become more pronounced, variation in the direction and magnitude of shifts in species occurrence in space and time may disrupt interspecific interactions in ecological communities. In this study, we examined how the fall and winter ichthyoplankton community in the Newport River Estuary located inshore of Pamlico Sound in the southeastern United States has responded to environmental variability over the last 27 yr. We relate the timing of estuarine ingress of 10 larval fish species to changes in sea surface temperature (SST), the Atlantic Multidecadal Oscillation, the North Atlantic Oscillation, wind strength and phenology, and tidal height. We also examined whether any species exhibited trends in ingress phenology over the last 3 decades. Species varied in the magnitude of their responses to all of the environmental variables studied, but most shared a common direction of change. SST and northerly wind strength had the largest impact on estuarine ingress phenology, with most species ingressing earlier during warm years and delaying ingress during years with strong northerly winds. As SST warms in the coming decades, the average date of ingress of some species (Atlantic croaker Micropogonias undulatus, summer flounder Paralichthys dentatus, pinfish Lagodon rhomboides) is projected to advance on the order of weeks to months, assuming temperatures do not exceed a threshold at which species can no longer respond through changes in phenology. These shifts in ingress could affect larval survival and growth since environmental conditions in the estuarine and pelagic nursery habitats of fishes also vary seasonally.

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