Predicting the Effects of Storm Surges and Abnormal River Flow on Flooding and Water Movement in Mobile Bay, Alabama

Prediction of Storm Surges and Wind Waves in Mobile Bay, AL

Solutions to Coastal Disasters 2005 ◽

10.1061/40774(176)9 ◽

2005 ◽

Author(s):

Qin Chen ◽

Lixia Wang ◽

Haihong Zhao ◽

Scott L. Douglass

Keyword(s):

Wind Waves ◽

Storm Surges ◽

Mobile Bay

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Modeling Flood Inundation Induced by River Flow and Storm Surges over a River Basin

Water ◽

10.3390/w6103182 ◽

2014 ◽

Vol 6 (10) ◽

pp. 3182-3199 ◽

Cited By ~ 35

Author(s):

Wei-Bo Chen ◽

Wen-Cheng Liu

Keyword(s):

River Basin ◽

River Flow ◽

Storm Surges ◽

Flood Inundation

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Factors Affecting the Supply and Distribution of Sediment in Some Tropical Ports

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f83-267 ◽

1983 ◽

Vol 40 (S1) ◽

pp. s35-s43 ◽

Cited By ~ 1

Author(s):

Mary P. Kendrick ◽

B. V. Derbyshire

Keyword(s):

River Flow ◽

Water Movement ◽

Field Measurements ◽

Sediment Supply ◽

Common Mechanism ◽

Main Body ◽

Factors Affecting ◽

Residual Currents ◽

Supply And Distribution ◽

Flume Tests

A brief review has been made of five hydraulic investigations of port siltation carried out by various international laboratories. The ports studied are distributed throughout the tropics from South America to Indonesia and the factors affecting sediment supply and distribution either directly or indirectly have been summarized. In spite of local variations, the similarity of many features suggests the existence of a common mechanism of sediment transport.Twenty months of field measurements at one of the ports demonstrated that turbidity in the water column is low from surface to 0.15 m above the bed. These measurements, together with those from flume tests on the behavior of local mud in currents, indicated that siltation is not solely due to deposition of silt suspended in the main body of flow. Further wave flume tests showed that under certain conditions, a shallow, highly turbid layer forms on the bed, capable of being transported by weak tidal currents without significant vertical mixing. Supplementation of field measurements of water movement with more detailed hydraulic model measurements permitted the formulation of a siltation mechanism.Appraisal of results suggests the most important immediate source of the silt to be the shallow coastal mud banks. Waves produce the turbid, near-bed layer which is transported by littoral currents into port approach channels for redistribution by the prevailing residual current, itself a function of fluvial/tidal interaction.Key words: siltation, dredging, silt movement, flocculation, waves, tides, river flow, residual currents

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High Resolution Urban Flood Modelling: A Case Study of Cork City, Ireland

10.29007/rzwj ◽

2018 ◽

Author(s):

Stephen Nash ◽

Joanne Comer ◽

Agnieszka Olbert ◽

Michael Hartnett

Keyword(s):

River Flow ◽

Storm Surges ◽

Flood Plain ◽

City Centre ◽

Contributing Factors ◽

River Flows ◽

Urban Flood ◽

Peak Flows ◽

Flood Model ◽

The City

Flooding of coastal areas can be caused by a number of contributing factors: high river flows, high tides, storm surges or a combination thereof. This paper presents results of a numerical modelling investigation of the role of river flow in flooding of Cork City. The Cork City urban flood model was developed by dynamically linking a storm surge model of the northeast Atlantic with the multi-scale nested flood model, MSN_Flood, which uses nesting to telescope down from 90m resolution in Cork Harbour to 2m resolution in the city streets. LiDAR data was used to create the urban flood plain. The model is used to hindcast the 2009 major flood event and is shown to accurately recreate the flood levels and extents. The model is then used to investigate the contributions of river flows to flooding in the city by simulating a range of peak flow scenarios combined with spring and neap tidal conditions. It is shown that flooding is relatively minor for peak flows less than 300 m3/s, while peak flows in excess of 500 m3/s result in extensive flooding of the city centre regardless of tidal condition.

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Water movement and the simulation of storm surges in the Firth of Clyde

Proceedings of the Royal Society of Edinburgh Section B Biological Sciences ◽

10.1017/s0269727000004899 ◽

1986 ◽

Vol 90 ◽

pp. 85-96

Author(s):

John M. Townson ◽

Richard H. F. Collar

Keyword(s):

Numerical Model ◽

Storm Surge ◽

General Circulation ◽

Water Movement ◽

Storm Surges ◽

Equation Of Motion ◽

Relative Importance

SynopsisThe basic mechanisms governing the general circulation of water in the Firth of Clyde are reviewed with particular reference to their changing relative importance throughout the system, this including the inner estuary. Attention is then focused on the effect of storm surge. A numerical model for the depth-integrated equation of motion is applied to the surges recorded in 1972 and 1979. The proportion of surge generated within the outer firth is thereby assessed.

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Water movement and salinty in the Yarra and Maribyrnong estuaries

Marine and Freshwater Research ◽

10.1071/mf9820401 ◽

1982 ◽

Vol 33 (3) ◽

pp. 401 ◽

Cited By ~ 13

Author(s):

R Beckett ◽

AK Easton ◽

BT Hart ◽

ID McKelvie

Keyword(s):

Residence Time ◽

River Flow ◽

Water Movement ◽

Salt Water ◽

Weather Conditions ◽

Freshwater Discharge ◽

Water Penetration ◽

Tidal State ◽

June July ◽

Yarra River

Water movement and salinity studies have shown that the distance of salt-water penetration up the Yarra estuary is dependent upon the magnitude of the flow of the incoming Yarra River. During June, July and August 1977, salinity, temperature and current profiles showed that the Yarra and Maribyrnong estuaries had distinct stratification, the Yarra being classified as a 'salt-wedge' estuary and the Maribyrnong as a 'partially mixed' estuary. The residence time of water in the Yarra estuary was estimated to vary between 1 day and several weeks, depending upon the river flow at the time. The influence of freshwater discharge, tidal state and weather conditions are discussed.

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Study on the effect of morphological changes of bridge piers on water movement properties

Water Practice & Technology ◽

10.2166/wpt.2021.080 ◽

2021 ◽

Author(s):

Xianqi Zhang ◽

Tao Wang ◽

Bingsen Duan

Keyword(s):

Flow Velocity ◽

Hydrodynamic Model ◽

River Flow ◽

Water Movement ◽

Yellow River ◽

Morphological Changes ◽

Great Influence ◽

Scientific Data ◽

Bridge Piers ◽

Axis Ratio

Abstract The different shapes of bridge piers across rivers have a great influence on the river water movement, and the study of the influence of pier morphology changes on the water movement characteristics is of great value for bridge design and river flooding. The hydrodynamic model can effectively simulate and predict the changes of river flow patterns, which can provide scientific data support for river management. This paper constructs a hydrodynamic model based on Mike21 and applies it to the numerical simulation of river hydrodynamics in the lower reaches of the Yellow River, taking elliptical piers as an example, and simulates the effect of the change of pier morphology on the flow velocity, water level and flow field of the river. The results show that the effect of elliptical pier morphology on the flow characteristics of the river channel is significant; under the same flow rate, the congestion value of the pier at the maximum axis ratio is 1.65 times of the minimum axis ratio, and the larger the axis ratio, the more serious the congestion; the difference in flow velocity at the maximum axis ratio can reach 2.33 times of the minimum axis ratio.

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