scholarly journals Progress or Regress? A Systematic Review on Two Decades of Monitoring and Addressing Land Subsidence Hazards in Semarang City

2021 ◽  
Vol 13 (24) ◽  
pp. 13755
Author(s):  
Rizkiana Sidqiyatul Hamdani ◽  
Sudharto Prawata Hadi ◽  
Iwan Rudiarto

Land subsidence is a major cause of environmental degradation. It increases the exposure of global sea level rise-related disasters in coastal cities lying on young sediment. Ample monitoring, adaptation, and mitigation measures have been taken to tackle the impact of such coastal hazards for decades in Semarang City. However, to date, land subsidence still has a negative impact on people’s quality of life. This brings us to the question of whether the measures are progressing towards better management or going to the opposite side. This paper is aimed to answer that question through an extensive literature review using PRISMA Guidelines to 125 scholarly articles and quantitative supporting analysis. We found that land subsidence is overlooked. Although the monitoring measures are progressing towards better technology utilization, it was not properly integrated into mitigation and adaptation measures. Instead of investing more on developing better urban water management, groundwater extraction still became the preferred water source. Thus, there is a major shift needed with regard to urban activities that need to pay more heed to the environment.

2021 ◽  
Vol 20 (1) ◽  
pp. 138-158
Author(s):  
Umer Khayyam ◽  
Rida Bano ◽  
Shahzad Alvi

Abstract Global climate change is one of the main threats facing humanity and the impacts on natural systems as well as humans are expected to be severe. People can take action against these threats through two approaches: mitigation and adaptation. However, mitigations and adaptations are contingent on the level of motivation and awareness, as well as socio-economic and environmental conditions. This study examined personal perception and motivation to mitigate and adapt to climate change among the university students in the capital city of Pakistan. We divided the respondents into social sciences, applied sciences and natural sciences, using logistic regression analysis. The results indicated that students who perceive severity, benefits from preparation, and have more information about climate change were 1.57, 4.98 and 1.63 times more likely to take mitigation and 1.47, 1.14 and 1.17 times more likely to take adaptation measures, respectively. Students who perceived self-efficacy, obstacles to protect from the negative consequences of climate change and who belonged to affluent families were more likely to take mitigation measures and less likely to take adaptation strategies. However, mitigation and adaptation were unaffected by age, gender and study discipline.


2017 ◽  
Vol 17 (9) ◽  
pp. 1559-1571 ◽  
Author(s):  
Yann Krien ◽  
Bernard Dudon ◽  
Jean Roger ◽  
Gael Arnaud ◽  
Narcisse Zahibo

Abstract. In the Lesser Antilles, coastal inundations from hurricane-induced storm surges pose a great threat to lives, properties and ecosystems. Assessing current and future storm surge hazards with sufficient spatial resolution is of primary interest to help coastal planners and decision makers develop mitigation and adaptation measures. Here, we use wave–current numerical models and statistical methods to investigate worst case scenarios and 100-year surge levels for the case study of Martinique under present climate or considering a potential sea level rise. Results confirm that the wave setup plays a major role in the Lesser Antilles, where the narrow island shelf impedes the piling-up of large amounts of wind-driven water on the shoreline during extreme events. The radiation stress gradients thus contribute significantly to the total surge – up to 100 % in some cases. The nonlinear interactions of sea level rise (SLR) with bathymetry and topography are generally found to be relatively small in Martinique but can reach several tens of centimeters in low-lying areas where the inundation extent is strongly enhanced compared to present conditions. These findings further emphasize the importance of waves for developing operational storm surge warning systems in the Lesser Antilles and encourage caution when using static methods to assess the impact of sea level rise on storm surge hazard.


Author(s):  
. Neha ◽  
Mohammad Aslam Ansari

Climate change has emerged as a potent threat disrupting the development process and is hurting several sectors of Indian economy, especially the agriculture sector. Knowledge about these disruptive factors can enable the farmers to mitigate the negative impact of climate change on agriculture. Therefore, the understanding of location-specific farmers’ perceptions and their adaptive behaviors can provide a better insight to design appropriate policy measures and guidelines to address these challenges effectively. The present study was aimed at determining farmers’ perceptions about climate change on agriculture. The study sample comprised 180 farmers selected using simple random sampling. The findings indicate that all the farmers (100%) were aware of climate change. All of them reported “increase in temperature” and “erratic rainfall” and “shortening of winter season” as the major indicators of climate change as experienced by them. Besides, 85.55 percent famers reported that “peak time of winter” has changed in Uttarakhand, a hilly state. Such perceptions about climate change can be seen as a precursor mediating the adoption of recommended practices and adaptation measures. Thus, the results of the study will enlighten the policy makers and agriculture scientists in preparing a roadmap for policy formulation regarding adaptation measures (short run initiatives) as well as undertaking mitigation measures (long run initiatives) of climate change besides helping the agriculture extension agencies to design and plan locale-specific adaptation strategies and agriculture development programs.


2021 ◽  
Vol 21 (11) ◽  
pp. 3285-3322
Author(s):  
Mia Wannewitz ◽  
Matthias Garschagen

Abstract. Coastal cities are under rising pressure to adapt to climate change. They suffer from the severe effects of increased frequencies and intensities of coastal hazards, particularly flooding, while oftentimes continuing to sprawl into hazard-exposed areas and grow beyond the pace of sufficient infrastructure development. Even though these problems have been quite well understood for a while, there is still comparatively little knowledge and scientific assessment of the solution space, i.e., on the options available for adaptation and the ways in which they are being perceived, framed and evaluated in the scientific literature. Focusing on Jakarta, this study presents findings from a systematic assessment of peer-reviewed scientific literature on the adaptation solution space with regard to current and future flooding. Jakarta is chosen as a case study since it is among the cities with the highest flood risk and adaptation pressure globally while also being one of the most heavily researched coastal cities in this regard, certainly in the Global South. Based on a structured keyword search, we assess 339 articles. Results indicate that the perceived solution space is skewed towards hard protection against flooding, while measures to accommodate flooding or retreat from exposed areas are less widely considered in the scientific debate. Soft adaptation measures for the reduction of social vulnerability receive less attention in the literature than those measures targeting the taming of flood hazards, often through engineering solutions. Likewise, hybrid adaptation approaches, which combine soft and hard measures in a complementary way, are only rarely considered. Looking into the future, the findings suggest that despite the importance of hard flood protection as a main adaptation solution in Jakarta, other fields of the solution space deserve increased scientific attention. This relates in particular to urgently needed feasibility and effectiveness assessments of ecosystems-based solutions for flood mitigation and adaptation options targeting social vulnerability. While the empirical results are specific to Jakarta, heuristic observations from research on other coastal cities suggest that similar scoping exercises of the predominantly perceived solution space might be of relevance in many cities beyond Jakarta.


2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Haya Aldaghlas ◽  
Felix Kin Peng Hui ◽  
Colin Fraser Duffield

PurposeThe initiation phase of capital projects is critical as this is where the highest number of options exist for modifying the project with minimal expenditure. Government and large organisations frequently involved in major capital projects have extensive procedures for this phase, yet organisations having an operational focus (like major container terminal stevedores), that only occasionally undertake capital projects face the dilemma of the trade-off between project planning and the management of operations. This research reported in this paper investigated the impact of industry operational considerations on the initiation of capital projects.Design/methodology/approachIn addition to an extensive literature review, a living research investigation of real projects initiated by a stevedoring company operating in Australia has been observed; the primary author of this paper spent six months as a participant/observer and witnessed the initiation of 12 capital projects. The collected data was qualitatively analysed using a four-step coding method.FindingsThe findings confirm that project initiation is a challenge for organisations who only spasmodically undertake capital projects and available project management frameworks do not necessarily consider the impact of such an organisation's culture. Issues identified that may have a negative impact on the initiation phase include lack of workplace trust, high individualism, ineffective interdepartmental communication, lack of resources and engineering and safety complexity.Originality/valueThe study investigated an underexplored industry within the context of project initiation, using the Australian stevedoring as a case study. This initial investigation suggests that a tailored project management framework is needed for the initiation phase of projects to reflect the unique nature of the stevedoring industry and by inference other industries that have a strong operational focus.


2017 ◽  
Author(s):  
Yann Krien ◽  
Bernard Dudon ◽  
Jean Roger ◽  
Gaël Arnaud ◽  
Narcisse Zahibo

Abstract. In the Lesser Antilles, coastal inundations from hurricane-induced storm surges cause great threats to lives, properties, and ecosystems. Assessing current and future storm surge hazard with sufficient spatial resolution is of primary interest to help coastal planners and decision makers develop mitigation and adaptation measures. Here, we use wave-current numerical models and statistical methods to investigate worst case scenarios and 100-year surge levels for the case study of Martinique, under present climate or considering a potential sea-level rise. Results confirm that the wave setup plays a major role in Lesser Antilles, where the narrow island shelf impedes the piling-up of large amounts of wind-driven water on the shoreline during extreme events. The radiation stress gradients thus contribute significantly to the total surge, up to 100 % in some cases. The non-linear interactions of sea level rise with bathymetry and topography are generally found to be relatively small in Martinique, but can reach several tens of centimeters in low-lying areas where the inundation extent is strongly enhanced compared to present conditions. These findings further emphasize the importance of waves for developing operational storm surge warning systems in the Lesser Antilles, and encourage caution when using static methods to assess the impact of sea level rise on storm surge hazard.


2021 ◽  
Vol 14 (12) ◽  
pp. 597
Author(s):  
Yevheniia Antoniuk ◽  
Thomas Leirvik

The green bond market develops rapidly and aims to contribute to climate mitigation and adaptation significantly. Green bonds as any asset are subject to transition climate risk, namely, regulatory risk. This paper investigates the impact of unexpected political events on the risk and returns of green bonds and their correlation with other assets. We apply a traditional and regression-based event study and find that events related to climate change policy impact green bonds indices. Green bonds indices anticipated the 2015 Paris Agreement on climate change as a favorable event, whereas the 2016 US Presidential Election had a significant negative impact. The negative impact of the US withdrawal from the Paris agreement is more prominent for municipal but not corporate green bonds. All three events also have a similar effect on green bonds performance in the long term. The results imply that, despite the benefits of issuing green bonds, there are substantial risks that are difficult to hedge. This additional risk to green bonds might cause a time-varying premium for green bonds found in previous literature.


Land ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1271
Author(s):  
Milad Bagheri ◽  
Zelina Zaiton Ibrahim ◽  
Mohd Fadzil Akhir ◽  
Wan Izatul Asma Wan Talaat ◽  
Bahareh Oryani ◽  
...  

Coastal hazards are an urgent issue of global concern considering the increasing population pressure in coastal regions, retreating coastlines, and rising seawater levels. Here we demonstrate the process of assessing the vulnerability of a coastal urban environment using the case of Kuala Terengganu, a coastal town in Malaysia, and evaluating the potential social, environmental, and economic impacts. Uncertainties in the human dimensions of global change deeply affect the assessment and responses to environmental, climatic, and non-climate impacts on coastal city population growth and communities. We address these uncertainties by combining a Delphi-Analytical Hierarchy Process (Delphi-AHP) model and Geographic Information System (GIS)tools to determine mitigation and adaptation probabilities as part of a Coastal City Vulnerability Assessment. We conclude by presenting calculations of the short- and long-term suitability for land use and recommending hazard mitigation measures to equip city planners and decision-makers in evaluating hazards and potential impacts on coastal city areas.


Author(s):  
Lin Guo ◽  
Huili Gong ◽  
Feng Zhu ◽  
Lin Zhu ◽  
Chaofan Zhou ◽  
...  

Since the 1970s, land subsidence has been developing rapidly in the Beijing Plain, the systematic study of its evolution mechanism is of great significance to the sustainable development of the regional economy. First, based on ENVISAT ASAT and RADARSAT2 data, the land subsidence data in Beijing Plain were obtained using permanent interferometer technology. Second, based on the GIS platform and using fishing net tools, vector data of ground settlement with different resolutions were obtained. Through a series of tests, a scale of 960 metres was selected as the research unit, and the subsidence rate of the grid was obtained from 2004 to 2015. Finally, based on the Mann-Kendall mutation test method, a trend analysis of land subsidence changes in various grids was carried out. The results showed that single-year mutation mainly distributed in the middle and lower parts of the Yongding River alluvial fan and the Chaobai River alluvial fan, mainly occurring in 2015, 2005 and 2013, respectively. The upper and middle alluvial fan of the Chaobai River, the vicinity of the emergency water source and the edge velocity of the groundwater funnel have undergone several sudden changes. Combined with hydrogeology, basic geological conditions and the impact of the South-to-North Water transfer project, we analysed the causes of the mutations in the grid. The research results can provide a basis for the study and prevention of land subsidence in this area and help to further explore the trend characteristics of land subsidence in this area.


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