Computing River Floods Using Massive Terrain Data

2016 ◽  
pp. 3-17
Author(s):  
Cici Alexander ◽  
Lars Arge ◽  
Peder Klith Bøcher ◽  
Morten Revsbæk ◽  
Brody Sandel ◽  
...  
Keyword(s):  
River Floods

scholarly journals Event attribution of Parnaíba River floods in Northeastern Brazil

2021 ◽  
Author(s):  
Conrado Rudorff ◽  
Sarah Sparrow ◽  
Marcia R. G. Guedes ◽  
Simon. F. B. Tett ◽  
João Paulo L. F. Brêda ◽  
...  
Keyword(s):  
Northeastern Brazil ◽  
Event Attribution ◽  
River Floods

scholarly journals Green–blue water in the city: quantification of impact of source control versus end-of-pipe solutions on sewer and river floods

2014 ◽  
Vol 70 (11) ◽  
pp. 1825-1837 ◽  
Author(s):  
K. De Vleeschauwer ◽  
J. Weustenraad ◽  
C. Nolf ◽  
V. Wolfs ◽  
B. De Meulder ◽  
...  
Keyword(s):  
Adaptation Strategies ◽  
Green Water ◽  
Source Control ◽  
Strong Reduction ◽  
Water Integration ◽  
River Flood ◽  
River Floods ◽  
The Impact ◽  
The City ◽  
Stormwater Retention

Urbanization and climate change trends put strong pressures on urban water systems. Temporal variations in rainfall, runoff and water availability increase, and need to be compensated for by innovative adaptation strategies. One of these is stormwater retention and infiltration in open and/or green spaces in the city (blue–green water integration). This study evaluated the efficiency of three adaptation strategies for the city of Turnhout in Belgium, namely source control as a result of blue–green water integration, retention basins located downstream of the stormwater sewers, and end-of-pipe solutions based on river flood control reservoirs. The efficiency of these options is quantified by the reduction in sewer and river flood frequencies and volumes, and sewer overflow volumes. This is done by means of long-term simulations (100-year rainfall simulations) using an integrated conceptual sewer–river model calibrated to full hydrodynamic sewer and river models. Results show that combining open, green zones in the city with stormwater retention and infiltration for only 1% of the total city runoff area would lead to a 30 to 50% reduction in sewer flood volumes for return periods in the range 10–100 years. This is due to the additional surface storage and infiltration and consequent reduction in urban runoff. However, the impact of this source control option on downstream river floods is limited. Stormwater retention downstream of the sewer system gives a strong reduction in peak discharges to the receiving river. However due to the difference in response time between the sewer and river systems, this does not lead to a strong reduction in river flood frequency. The paper shows the importance of improving the interface between urban design and water management, and between sewer and river flood management.

scholarly journals A simple model for the estimation of the number of fatalities due to floods in central Europe

2014 ◽  
Vol 14 (7) ◽  
pp. 1663-1676 ◽  
Author(s):  
M. Brazdova ◽  
J. Riha
Keyword(s):  
Central Europe ◽  
Pairwise Comparison ◽  
The Czech Republic ◽  
Factors Affecting ◽  
Hazard Exposure ◽  
Proposed Model ◽  
River Floods ◽  
Using Data ◽  
Human Losses ◽  
Significant Factors

Abstract. In this paper a model for the estimation of the number of potential fatalities is proposed based on data from 19 past floods in central Europe. First, the factors contributing to human losses during river floods are listed and assigned to the main risk factors: hazard – exposure – vulnerability. The order of significance of individual factors has been compiled by pairwise comparison based on experience with real flood events. A comparison with factors used in existing models for the estimation of fatalities during floods shows good agreement with the significant factors identified in this study. The most significant factors affecting the number of human losses in floods have been aggregated into three groups and subjected to correlation analysis. A close-fitting regression dependence is proposed for the estimation of loss of life and calibrated using data from selected real floods in central Europe. The application of the proposed model for the estimation of fatalities due to river floods is shown via a flood risk assessment for the locality of Krnov in the Czech Republic.

scholarly journals Yangtze River floods enhance coastal ocean phytoplankton biomass and potential fish production

2011 ◽  
Vol 38 (13) ◽  
pp. n/a-n/a ◽  
Author(s):  
Gwo-Ching Gong ◽  
Kon-Kee Liu ◽  
Kuo-Ping Chiang ◽  
Tung-Ming Hsiung ◽  
Jeng Chang ◽  
...  
Keyword(s):  
Phytoplankton Biomass ◽  
Yangtze River ◽  
Coastal Ocean ◽  
Fish Production ◽  
River Floods

Development of a damage and casualties tool for river floods in northern Thailand

2008 ◽  
pp. 1707-1715
Author(s):  
J Leenders ◽  
J Wagemaker ◽  
A Roelevink ◽  
T Rientjes ◽  
G Parodi
Keyword(s):  
Northern Thailand ◽  
River Floods

scholarly journals Turbidity in the fluvial Gironde Estuary (southwest France) based on 10-year continuous monitoring: sensitivity to hydrological conditions

2015 ◽  
Vol 19 (6) ◽  
pp. 2805-2819 ◽  
Author(s):  
I. Jalón-Rojas ◽  
S. Schmidt ◽  
A. Sottolichio
Keyword(s):  
River Flow ◽  
Hysteresis Loops ◽  
Annual Runoff ◽  
Transitional Period ◽  
Estuarine System ◽  
Upstream Migration ◽  
Hydrological Conditions ◽  
Frequency Monitoring ◽  
Turbidity Level ◽  
River Floods

Abstract. Climate change and human activities impact the volume and timing of freshwater input to estuaries. These modifications in fluvial discharges are expected to influence estuarine suspended sediment dynamics, and in particular the turbidity maximum zone (TMZ). Located in southwest France, the Gironde fluvial-estuarine system has an ideal context to address this issue. It is characterized by a very pronounced TMZ, a decrease in mean annual runoff in the last decade, and it is quite unique in having a long-term and high-frequency monitoring of turbidity. The effect of tide and river flow on turbidity in the fluvial estuary is detailed, focusing on dynamics related to changes in hydrological conditions (river floods, periods of low discharge, interannual changes). Turbidity shows hysteresis loops at different timescales: during river floods and over the transitional period between the installation and expulsion of the TMZ. These hysteresis patterns, that reveal the origin of sediment, locally resuspended or transported from the watershed, may be a tool to evaluate the presence of remained mud. Statistics on turbidity data bound the range of river flow that promotes the upstream migration of TMZ in the fluvial stations. Whereas the duration of the low discharge period mainly determines the TMZ persistence, the freshwater volume during high discharge periods explains the TMZ concentration at the following dry period. The evolution of these two hydrological indicators of TMZ persistence and turbidity level since 1960 confirms the effect of discharge decrease on the intensification of the TMZ in tidal rivers; both provide a tool to evaluate future scenarios.

Future climate – made real

Physics World ◽  
2021 ◽  
Vol 34 (12) ◽  
pp. 3ii-3ii
Keyword(s):  
Future Climate ◽  
Floods And Droughts ◽  
River Floods

Scientists have created an app that estimates the increased likelihood of events such as wildfires, river floods and droughts in a user’s lifetime.

An Imaging Capable, Low Cost IoT Node for River Flood Phenomena

2021 ◽  
Author(s):  
Evangelos Skoubris ◽  
George Hloupis
Keyword(s):  
Water Level ◽  
River Basin ◽  
Electronic Device ◽  
Low Cost ◽  
Early Warning Systems ◽  
Normal Operation ◽  
Warning Sign ◽  
Still Images ◽  
River Floods ◽  
Social Importance

<p>Among all natural disasters, river floods are becoming increasingly frequent. They present high risk and their impact can be fairly destructive and of strong economic, health, and social importance. Key tools to avoid their catastrophic results are the Early Warning Systems (EWS). An EWS usually monitors various physical quantities through a specific hardware, and produce data which after certain processing can detect and estimate the level of the risk.</p><p>In the current work we present the concept, the design, the application, and some preliminary data regarding a low cost imaging node, part of an EWS aimed for river floods. This EWS consists of various sensing nodes which are mainly equipped with water presence detectors, water level meters, water temperature sensors, along with the necessary networking capability. The novelty of this new node design is that it utilizes a VGA resolution camera which captures still images of a view of interest. The latter can be for example an implementation prone to defects in case of flood, such as a river basin level road crossing, or a bridge. The images can also provide constant monitoring of the river basin state, i.e. to detect the presence of any unwanted objects (waste or other natural & artificial bring materials). Through image processing the images can even provide some coarse data, i.e. water level measurements by utilizing vertical stripped rods within the field of view of the camera.</p><p>The ability to have a camera usually counteracts the IoT characteristics of an electronic device. Nevertheless, in this design the IoT character of the node was not constrained. The nodes have extended power autonomy (several months via Li-Ion battery, optionally solar rechargeable), present a small size, each node is network independent using GSM and LoRaWAN technology. The data usage is minimized by uploading only 2 QVGA images per day in normal operation (can be increased to a maximum of 48 VGA images per day, if required). In case of risk detection the node also supports the actuation of a local warning sign.</p>

Vorst in het vizier

2020 ◽  
Vol 4 (3) ◽  
pp. 294-320
Author(s):  
Fons Meijer
Keyword(s):  
The Netherlands ◽  
19Th Century ◽  
Storm Surges ◽  
Content Type ◽  
National Community ◽  
River Floods ◽  
The 19Th Century ◽  
Proactive Role

Abstract Looking at the monarch Nationalism and the representation of Orange monarchs after disasters in the 19th century The 19th century Dutch monarchs from the House of Orange often played a proactive role in the aftermath of major catastrophes, such as storm surges, river floods and destructive explosions. Authors repeatedly praised their commitment afterwards and characterised them as symbols of the nation. In this article I demonstrate that the discourse through which monarchs were celebrated should quintessentially be understood as manifestations of nationalism, that is: these discourses cultivated a national sense of unity and thus popularised a the notion of the Netherlands as a national community. As it turns out, authors commonly cultivated a conservative notion of national community, concentrated around conformist concepts such as unity, hierarchy and moderation.

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