scholarly journals The Influence of Urban Flooding on Residents’ Daily Travel: A Case Study of Macau with Proposed Ameliorative Strategies

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1825
Author(s):  
Li ◽  
Zhou

Climate change has resulted in more extreme weather events in coastal cities, and understanding how daily life is impacted is crucial to make effective adaptation measures. Using Macau as a testbed, this research describes examines the impacts of flooding caused by storm surges on residents’ daily travel and proposes measures to ameliorate disaster risks. Spatial extents of urban floods were modelled through inundation simulations using geographical information data. An analysis of the travel distance increases from residents’ homes to common types of destinations was performed both under normal conditions and during flood events in GIS (Geographic Information System) to assess the influence of urban flooding on residents’ daily travel. The results show that one third of the land is threatened by floods in Macau. People’s average travel distance increases as the warning levels escalate, and travel distance is predicted to rise by up to 64.5%. Based on the findings, the study proposes mitigation strategies to minimize urban flooding’s impacts. It suggests that the area more densely populated is not necessarily the one requiring the deployment of preventative measures with the highest priority, as a traffic analysis is identified as the key area which demands disaster prevention measures.

2018 ◽  
Vol 5 (1) ◽  
pp. 33-46
Author(s):  
Oyeleke Oluwaseun Oyerinde

The reality of climate change as an aspect of broader global and environmental change attributable to either natural or anthropogenic cause is becoming more evident. Equally, energy, chiefly oil and gas is not only a major climate change inducer via greenhouse gas emissions anymore, but also a victim of the impacts therein. As such, this paper examines the impact of recorded changes in climatic variables on oil and gas operations categorized into upstream, midstream and downstream operations representing exploration and production, transportation, along with processing and distribution respectively. Identified changes in weather events primarily driven by general climate change having significant impact on oil and gas operations and infrastructure include increasing temperature, increasing flooding, storm surges, sea level rise, coastal erosion, intense winds and waves, drought/water shortage and subsidence/landslides/mudslides and they all pose tremendous risk to onshore and offshore (shallow and deep water) operations and installations. Several adaptation measures are currently being implemented some of which are already yielding positive results. Adaptation measures are being complemented with mitigation strategies as long-term solutions. Sadly, most developing oil producing countries are still way behind in adopting various existing adaptation measures and implementing mitigative strategies due to prevalent low capacity.


Author(s):  
Lena Dominelli

The concepts of hazards and risks began in engineering when scientists were measuring the points at which materials would become sufficiently stressed by the pressures upon them that they would break. These concepts migrated into the environmental sciences to assess risk in the natural terrain, including the risks that human activities posed to the survival of animals (including fish in streams) and plants in the biosphere. From there, they moved to the social sciences, primarily in formal disaster discourses. With the realization that modern societies constantly faced risks cushioned in uncertainties within everyday life, the media popularized the concept of risk and its accoutrements, including mitigation, adaptation, and preventative measures, among the general populace. A crucial manifestation of this is the media’s accounts of the risks affecting different groups of people or places contracting Covid-19, which burst upon a somnambulant world in December 2019 in Wuhan, China. The World Health Organization (WHO) declared Covid-19 a pandemic on March 11, 2020. Politicians of diverse hues sought to reassure nervous inhabitants that they had followed robust, scientific advice on risks to facilitate “flattening the curve” by spreading the rate of infection in different communities over a longer period to reduce demand for public health services. Definitions of hazard, risk, vulnerability, and resilience evolved as they moved from the physical sciences into everyday life to reassure edgy populations that their social systems, especially the medical ones, could cope with the demands of disasters. While most countries have managed the risk Covid-19 posed to health services, this has been at a price that people found difficult to accept. Instead, as they reflected upon their experiences of being confronted with the deaths of many loved ones, especially among elders in care homes; adversities foisted upon the disease’s outcomes by existing social inequalities; and loss of associative freedoms, many questioned whether official mitigation strategies were commensurate with apparent risks. The public demanded an end to such inequities and questioned the bases on which politicians made their decisions. They also began to search for certainties in the social responses to risk in the hopes of building better futures as other institutions, schools, and businesses went into lockdown, and social relationships and people’s usual interactions with others ceased. For some, it seemed as if society were crumbling around them, and they wanted a better version of their world to replace the one devastated by Covid-19 (or other disasters). Key to this better version was a safer, fairer, more equitable and reliable future. Responses to the risks within Covid-19 scenarios are similar to responses to other disasters, including earthquakes, volcanic eruptions, wildfires, tsunamis, storms, extreme weather events, and climate change. The claims of “building back better” are examined through a resilience lens to determine whether such demands are realizable, and if not, what hinders their realization. Understanding such issues will facilitate identification of an agenda for future research into mitigation, adaptation, and preventative measures necessary to protect people and the planet Earth from the harm of subsequent disasters.


2017 ◽  
Vol 2 (1) ◽  
pp. 7-17
Author(s):  
André Lindner ◽  
Francois Jost ◽  
Mariana Vidal Merino ◽  
Natalia Reategui ◽  
Jürgen Pretzsch

The increase in extreme weather events is a major consequence of climate change in tropical mountain rangeslike the Andes of Peru. The impact on farming households is of growing interest since adaptation and mitigation strategies are required to keep race with environmental conditions and to prevent people from increasing poverty. In this regard it becomes more and more obvious that a bottom-up approach incorporating the local socioeconomic processes and their interplay is needed. Socio-economic field laboratories are used to understand such processes on site. This integrates multi-disciplinary and participatory analyses of production and its relationship with biophysical and socio-economic determinants. Farmers react individually based on their experiences, financial situation, labor conditions, or attitude among others. In this regard socio-economic field laboratories also serve to develop and test scenarios about development paths, which involve the combination of both, local and scientific knowledge. For a comprehensive understanding of the multitude of interactions the agent-based modeling framework MPMAS (Mathematical Programming-based Multi-Agent System) is applied. In combination with continued ground-truthing, the model is used to gain insights into the functioning of the complex social system and to forecast its development in the near future. The assessment of the effect of humans’ behavior in changing environmental conditions including the comparison of different sites, transforms the model to a communication tool bridging the gap between adaptation policies and local realities.


Author(s):  
Vu ◽  
Rutherford ◽  
Phung

The population of older people is increasing at a rapid rate, with those 80 years and older set to triple by 2050. This systematic review aimed to examine older people’s perceptions and behaviours against existing heatwaves prevention measures and systematically categorize and analyse those measures using the Ottawa charter for health promotion framework. Peer-reviewed published literature between 22nd September 2006 and 24th April 2018 was retrieved, according to the PRISMA guidelines, from five different databases. Eighteen articles were finally included. There is a lack of published studies from developing countries. Results were categorized and analysed using the Ottawa charter five action areas. Mitigation strategies from current heat action plans are discussed and gaps are highlighted. A lack of systematic evaluation of heat action plans efficacy was identified. Older people are not demonstrating all recommended preventative measures during heatwaves. Support personnel and health professionals are not being pro-active enough in facilitating prevention of adverse effects from heatwaves. Governments are beginning to implement policy changes, but other recommended support measures outlined in the Ottawa charter are still lacking, and hence require further action. Linkage between specific components of heat action plans and outcomes cannot be ascertained; therefore, more systematic evaluation is needed.


Agronomy ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 619
Author(s):  
Sadeeka Layomi Jayasinghe ◽  
Lalit Kumar

Even though climate change is having an increasing impact on tea plants, systematic reviews on the impact of climate change on the tea system are scarce. This review was undertaken to assess and synthesize the knowledge around the impacts of current and future climate on yield, quality, and climate suitability for tea; the historical roots and the most influential papers on the aforementioned topics; and the key adaptation and mitigation strategies that are practiced in tea fields. Our findings show that a large number of studies have focused on the impact of climate change on tea quality, followed by tea yield, while a smaller number of studies have concentrated on climate suitability. Three pronounced reference peaks found in Reference Publication Year Spectroscopy (RYPS) represent the most significant papers associated with the yield, quality, and climate suitability for tea. Tea yield increases with elevated CO2 levels, but this increment could be substantially affected by an increasing temperature. Other climatic factors are uneven rainfall, extreme weather events, and climate-driven abiotic stressors. An altered climate presents both advantages and disadvantages for tea quality due to the uncertainty of the concentrations of biochemicals in tea leaves. Climate change creates losses, gains, and shifts of climate suitability for tea habitats. Further studies are required in order to fill the knowledge gaps identified through the present review, such as an investigation of the interaction between the tea plant and multiple environmental factors that mimic real-world conditions and then studies on its impact on the tea system, as well as the design of ensemble modeling approaches to predict climate suitability for tea. Finally, we outline multifaceted and evidence-based adaptive and mitigation strategies that can be implemented in tea fields to alleviate the undesirable impacts of climate change.


2021 ◽  
Vol 13 (12) ◽  
pp. 6861
Author(s):  
Xiya Liang ◽  
Pengfei Li ◽  
Juanle Wang ◽  
Faith Ka Shun Chan ◽  
Chuluun Togtokh ◽  
...  

Mongolia is a globally crucial region that has been suffering from land desertification. However, current understanding on Mongolia’s desertification is limited, constraining the desertification control and sustainable development in Mongolia and even other parts of the world. This paper studied spatiotemporal patterns, driving factors, mitigation strategies, and research methods of desertification in Mongolia through an extensive review of literature. Results showed that: (i) remote sensing monitoring of desertification in Mongolia has been subject to a relatively low spatial resolution and considerable time delay, and thus high-resolution and timely data are needed to perform a more precise and timely study; (ii) the contribution of desertification impacting factors has not been quantitatively assessed, and a decoupling analysis is desirable to quantify the contribution of factors in different regions of Mongolia; (iii) existing desertification prevention measures should be strengthened in the future. In particular, the relationship between grassland changes and husbandry development needs to be considered during the development of desertification prevention measures; (iv) the multi-method study (particularly interdisciplinary approaches) and desertification model development should be enhanced to facilitate an in-depth desertification research in Mongolia. This study provides a useful reference for desertification research and control in Mongolia and other regions of the world.


2011 ◽  
Vol 16 (2) ◽  
pp. 177-198 ◽  
Author(s):  
KARL PAUW ◽  
JAMES THURLOW ◽  
MURTHY BACHU ◽  
DIRK ERNST VAN SEVENTER

ABSTRACTExtreme weather events such as droughts and floods have potentially damaging implications for developing countries. Previous studies have estimated economic losses during hypothetical or single historical events, and have relied on historical production data rather than explicitly modeling climate. However, effective mitigation strategies require knowledge of the full distribution of weather events and their isolated effects on economic outcomes. We combine stochastic hydrometeorological crop-loss models with a regionalized computable general equilibrium model to estimate losses for the full distribution of possible weather events in Malawi. Results indicate that, based on repeated sampling from historical events, at least 1.7 per cent of Malawi's gross domestic product (GDP) is lost each year due to the combined effects of droughts and floods. Smaller-scale farmers in the southern region of the country are worst affected. However, poverty among urban and nonfarm households also increases due to national food shortages and higher domestic prices.


2017 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Ircham Habib Anggara ◽  
Florence Elfriede Silalahi ◽  
Barandi Sapta Widartono

<p align="center"><strong><em>ABSTRAK</em></strong></p><p><em>Saat ini banyak operator telekomunikasi yang bermunculan di Indonesia sehingga menyebabkan terjadinya persaingan yang tinggi antar operator telekomunikasi. PT. Telkom selaku badan usaha yang berwenang dalam pembangunan dan pengembangan sektor telekomunikasi khususnya untuk telepon kabel, juga menyadarinya dan berupaya untuk meningkatkan pelayanan kepada pelanggan. Penelitian ini bertujuan membuat suatu basis data spasial dan model sistem informasi jaringan telepon PT. Telkom yang interaktif dengan memanfaatkan citra Quickbird yang bersumber dari Google Earth, Global Positiong System (GPS) dan Sistem Informasi Geografis (SIG) untuk penentuan rute optimal penanganan gangguan jaringan telepon PT. Telkom berdasarkan Algoritma Floyd-Warshall. Penentuan rute optimal didasarkan atas variabel impedensi, berupa jarak tempuh dan waktu tempuh yang diturunkan dari panjang jalan dibagi dengan kecepatan rata-rata kendaraan per ruas jalan. Hasil penelitian ini berupa Sistem Informasi Rute Optimal Telkom Bantul (SIROTOL) yang berbasis dekstop dan dapat berdiri sendiri tanpa adanya software SIG yang lain. Rute optimal program SIROTOL mampu digunakan untuk menentukan rute optimal penanganan gangguan jaringan telepon PT. Telkom Bantul dengan hasil yang akurat atau mendekati kondisi di lapangan. Hal tersebut dibuktikan dengan hasil validasi lapangan yang memiliki nilai uji akurasi rute optimal berdasarkan jarak tempuh sebesar 97.06% dan nilai uji akurasi rute optimal berdasarkan waktu tempuh sebesar 96.14%.</em></p><p><em> </em></p><p align="center"><strong><em>ABSTRACT</em></strong></p><p><em>Nowdays, many providers are emerging in Indonesia so that they lead high competition among telecommunication operators. As a state owned company that has authorities on the development of telecommunications sector, especially for cables telephone, PT. TELKOM also realize that, so they strive for a better service to the customers.This research aims to create a spatial database and interactive telephone network information system model of PT. Telkom by using Quickbird imagery derived from Google Earth, Global Position System (GPS) and Geographical Information Systems (GIS) to determine the optimal route telephone network for error handling based on Floyd-Warshall algorithm. Determination of the optimal route is based on the variable impedance of the travel distance and travel time derived from the length of road divided by the average speed of vehicles per road segment. Subsequent tissue analysis results are integrated with GPS navigation technology to help a network technician search for location of interference and network technicians to assist the movement towards the location of the phone to crash in the field. The result of the research is Telkom Bantul Optimal Route Information System (SIROTOL) desktop based and stand alone application. SIROTOL optimal route program can be applied to determine the optimal route accurately on Telkom Bantul’s error handling or at least close to field conditions. It can be proved by field validation results which resulted in accurate optimal route test value based on travel distance of 97.06% and travel time of 96.14%</em><em>.</em><em></em></p><p><em>Keywords: optimal route, network analysis, Floyd-Warshall algorithm, telephone network</em></p>


2021 ◽  
Vol 331 ◽  
pp. 07015
Author(s):  
Dian Pratiwi ◽  
Arniza Fitri ◽  
Arlina Phelia ◽  
Nabila Annisa Amara Adma ◽  
Kastamto

In the urban area, flooding becomes the most common disaster that has not been resolved until today. The utilization of river border area into housing and lack of absorption area becomes the trigger factor of urban flooding, as what is happening around Way Halim River on Seroja street. In this area, floods often happen during the rainy season, with the latest events recorded on January 21st, 2021. Analysis of flood intensities and discharges can be parameters for the decision-making of flood mitigation strategies. This study aims to analyze the flood discharges along Way Halim River, Seroja street by comparing the flood discharges resulting from three analysis methods of Synthetic Unit Hydrograph (SUH) including Gama I SUH, Nakayasu SUH, and Snyder SUH. Finally, suitable flood mitigation strategies were also proposed in this study based on the flood discharges and rain intensities. The results showed that Nakayasu SUH had the highest peak flood discharge than Snyder SUH and Gama I SUH. Based on the results of the investigation of land suitability; and analysis of rainfall intensities and flood discharges, the proposed flood mitigation in Seroja street is by installing biopore infiltration holes along Seroja street for storing water and reducing the risk of flooding in the area.


2002 ◽  
Vol 18 (3) ◽  
pp. 326-333 ◽  
Author(s):  
Juichi YAMAGIWA ◽  
Yukiko SHIMOOKA

Sign in / Sign up

Export Citation Format

Share Document