scholarly journals Land subsidence of coastal areas of Jiangsu Province, China: historical review and present situation

2015 ◽  
Vol 372 ◽  
pp. 503-506 ◽  
Author(s):  
J. Q. Zhu ◽  
Y. Yang ◽  
J. Yu ◽  
X. L. Gong
Keyword(s):  
Local Government ◽  
Land Subsidence ◽  
Historical Review ◽  
Present Situation ◽  
Jiangsu Province ◽  
Groundwater Pumping ◽  
Economic Implications ◽  
Sea Levels ◽  
Coastal Cities ◽  
Rising Sea Levels

Abstract. Surface faults related to land subsidence have been observed in coastal cities, such as Nantong, Yancheng, and Lian Yungang, in Jiangsu Province (CAJS) since the early 1970s. Nowadays, increases flooding and rising sea levels are attributed to subsidence caused by groundwater pumping. In this work we present a brief description of land subsidence in CAJS, we examine the mechanisms of land subsidence induced mainly by groundwater pumping and its evolution and economic implications as well as the implemented measures by the local government to prevent new damage.

scholarly journals Oyster Hack

2018 ◽  
Author(s):  
Evelyn Tickle ◽  
Keyword(s):  
New York ◽  
Oyster Reefs ◽  
Sea Levels ◽  
National Geographic ◽  
Coastal Cities ◽  
Run Off ◽  
Functionally Impaired ◽  
The Usa ◽  
Rising Sea Levels ◽  
Engineered Systems

There is a state of emergency in the USA- catastrophic coastal erosion, rising sea levels at the rate of one-eighth of an inch per year and poor water quality. Oysters can help. Oysters filter the water, removing toxins. Oyster reefs are living infra-structures that protect coastlines from storms and tidal surges. But…many of the world’s existing oyster reefs are functionally impaired. The Chesapeake Bay is dying. Untreated chemical run-off and human waste is creating ‘Dead Zones’ where there is no oxygen to support marine life. Much of Hurricane Sandy’s damage to New York City could have been prevented. In the early 1800’s the Harbor was lined with living oyster reefs. Now, these are dead or dying, fragile and vulnerable. Miami is flooded on a regular basis reports Miami Herald. Our oyster reefs must be revived or rebuilt- they will help. Walls are not the answer. 14% of US coastal cities have massive sea-walls already. National Geographic reports that by 2100 one-third of our coastal cities will be protected by walls, that cost billions of dollars and will not provide protection from the most severe storms. I believe in the power of the oyster. The oyster is an engineer- its reefs and shells work together as a “system of systems” to protect our waters and coastlines. Without them we are sunk, literally, no matter how many engineered systems we humans try to substitute and pay billions of dollars to implement.

scholarly journals Strategic basin and delta planning increases the resilience of the Mekong Delta under future uncertainty

2021 ◽  
Vol 118 (36) ◽  
pp. e2026127118 ◽  
Author(s):  
R. J. P. Schmitt ◽  
M. Giuliani ◽  
S. Bizzi ◽  
G. M. Kondolf ◽  
G. C. Daily ◽  
...  
Keyword(s):  
Land Subsidence ◽  
Mekong Delta ◽  
Sediment Management ◽  
Sediment Supply ◽  
Sea Levels ◽  
Sediment Yields ◽  
Development Scenarios ◽  
Climate Resilience ◽  
Rising Sea Levels

The climate resilience of river deltas is threatened by rising sea levels, accelerated land subsidence, and reduced sediment supply from contributing river basins. Yet, these uncertain and rapidly changing threats are rarely considered in conjunction. Here we provide an integrated assessment, on basin and delta scales, to identify key planning levers for increasing the climate resilience of the Mekong Delta. We find, first, that 23 to 90% of this unusually productive delta might fall below sea level by 2100, with the large uncertainty driven mainly by future management of groundwater pumping and associated land subsidence. Second, maintaining sediment supply from the basin is crucial under all scenarios for maintaining delta land and enhancing the climate resilience of the system. We then use a bottom-up approach to identify basin development scenarios that are compatible with maintaining sediment supply at current levels. This analysis highlights, third, that strategic placement of hydropower dams will be more important for maintaining sediment supply than either projected increases in sediment yields or improved sediment management at individual dams. Our results demonstrate 1) the need for integrated planning across basin and delta scales, 2) the role of river sediment management as a nature-based solution to increase delta resilience, and 3) global benefits from strategic basin management to maintain resilient deltas, especially under uncertain and changing conditions.

scholarly journals Extending Urban Development on Water: Jakarta Case Study

2020 ◽  
Vol 11 (2) ◽  
pp. 247-265
Author(s):  
Rukuh Setiadi ◽  
Joerg Baumeister ◽  
Paul Burton ◽  
Johanna Nalau
Keyword(s):  
Climate Change ◽  
Urban Development ◽  
Sea Level ◽  
National Level ◽  
Sea Levels ◽  
Coastal Cities ◽  
Metropolitan Cities ◽  
Development Trajectory ◽  
Rising Sea Levels

This article introduces the concept of ‘Sea Cities’ to emphasize a range of tactics to acknowledge the relationship between the sea and cities. This concept is critical for the possibility of integrating future aquatic-based urbanism to address climate change, and in particular, the issue of rising sea levels, which is currently faced by the majority of coastal cities. We compare and assess the tactics of four sea cities (i.e., to fortify, accommodate, release, and floating) against the case study of Jakarta. Jakarta is deemed to be among the metropolitan cities most vulnerable to sea level rise, owing to overpopulation alongside the fact that its land is sinking rapidly due to massive urban development. In order to understand the prospects and pitfalls of each tactic for Jakarta, we analyse scholarly literature on the subject, official government reports and documents, as well as policy briefs released by governments at the national level. This study finds that massive hard structural solutions are not only insufficient but also ineffective towards solving the challenges of climate change in Jakarta, especially the rising sea level. At the same time, it also identifies that while the combination of accommodating and floating tactics has never been considered as future a planning option, this could enable more resilient and adaptive solutions for the future development trajectory of Jakarta. In doing so, it could also provide important transferrable lessons for other coastal cities, especially those within developing countries.

scholarly journals Financing resilience efforts to confront future urban and sea-level rise flooding: Are coastal megacities in Association of Southeast Asian Nations doing enough?

2021 ◽  
pp. 239980832199443
Author(s):  
Amar Causevic ◽  
Matthew LoCastro ◽  
Dharish David ◽  
Sujeetha Selvakkumaran ◽  
Åsa Gren
Keyword(s):  
Developing Countries ◽  
Sea Level Rise ◽  
Sea Level ◽  
Risk Index ◽  
Urban Flooding ◽  
Urban Centers ◽  
Sea Levels ◽  
Coastal Cities ◽  
Rising Sea Levels ◽  
Adaptation Action

Continued greenhouse gas emissions will lead to a rise in temperatures, accompanied by rising sea levels threatening low-lying coastal cities. This vulnerability is especially acute in developing countries’ cities. This study reviews whether Bangkok, Manila, and Jakarta, less prepared emerging urban centers of developing countries, are investing in adaptation projects for resilience against sea-level rise and urban flooding. Sea-level rise and urban flooding resilience projects were identified in the selected cities through secondary research methods, data on multilateral climate funds, and other aggregated funding databases such as Aid Atlas, Cities Adaptation Action, and City Risk Index. Our findings show that even though these cities do have some adaptation projects to address coastal flooding and rising sea-level threats, the funding has been disparate and dispersed due to a lack of continuous, sizeable, and diverse financing options and does not come close to the requirement, given the risks, of covering potential disaster-related losses. Our findings further highlight the need to expand financing beyond multilateral funds and bilateral funding agreements and to include financial mechanisms that incentivize potential stakeholders to invest in projects that ordinarily are considered nonrevenue generating.

Environment

2018 ◽  
Author(s):  
Mira Kamdar
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Large Population ◽  
Financial Capital ◽  
Negative Effects ◽  
Sea Levels ◽  
Coastal Cities ◽  
Rising Sea Levels

How will climate change affect India? With its large population, long coastlines, and location near the equator, India is particularly vulnerable to the negative effects of global warming. Rising sea levels will threaten the country’s many coastal cities, including the financial capital, Mumbai, and the...

scholarly journals Establishment of a Flood Nomograph in Coastal Areas Considering Sea-Level Rise

2021 ◽  
Vol 21 (6) ◽  
pp. 313-322
Author(s):  
Dong Jun Kim ◽  
Kyung Min Choi ◽  
Yang Ho Song ◽  
Jung Ho Lee
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Coastal Areas ◽  
Water Levels ◽  
Urban Flooding ◽  
Flood Forecast ◽  
Sea Levels ◽  
Research Areas ◽  
Coastal Cities ◽  
Rising Sea Levels

Climate change caused by global warming is raising the average sea level. The rise in sea level leads to an increase in river water levels within the affected range, which increases the possibility of flooding in water due to erosion of outfall to the coast and rivers. Therefore, it is necessary to recognize in advance the risk of occurrence of domestic flooding, which is aggravated by the effect of rising sea levels, and to construct new boundary conditions for predicting urban flooding accordingly. In this study, Flood Nomograph for two research areas was selected in consideration of the regional characteristics of coastal areas and the scenario of sea level rise. As a result of the analysis, as the sea level rose, the amount of flood critical rainfall decreased numerically. It is believed that this study can be used as a necessary basis for improving flood forecast and warning data considering sea level rise in coastal cities in the future.

scholarly journals Flood Inundation Analysis in Penang Island (Malaysia) Based on InSAR Maps of Land Subsidence and Local Sea Level Scenarios

Water ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1518
Author(s):  
Guosheng Gao ◽  
Lim Hwee San ◽  
Yidan Zhu
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence ◽  
Sea Levels ◽  
Radar Images ◽  
Regional Sea Level ◽  
Land Deformation ◽  
Rising Sea Levels ◽  
Sbas Insar ◽  
First Time

Penang Island is an important economic center in Malaysia and most of its population live in the coastal areas. Although previous studies have shown that it is vulnerable to rising sea levels, the combination of sea-level rise and local land subsidence would be devastating. Therefore, the objective of this study is to apply the local land subsidence model to estimate the inundated areas which relate to sea level rise by 2100. Land subsidence is quantified by the SBAS-InSAR technique on the basis of Sentinel-1 radar images for both ascending and descending tracks. For the first time, the geostatistical analyst method is used to merge the different track results and create the land subsidence models, the results show this method can maximize land deformation fields and minimize deformation errors. According to the land deformation results, all of the coastlines in the east of the island have differing medium levels of subsidence, especially in reclaimed lands and building areas. Lastly, the bathtub model is used to quantify the inundated areas by combing regional sea-level rise projection and local land subsidence models under CoastalDEM in 2100 projections. The results of this study indicate land subsidence that would increase 2.0% and 5.9% of the inundated area based on the different scenarios by 2100 projections.

scholarly journals ADAPTASI PERMUKIMAN TERDAMPAK BENCANA ROB (Studi Kasus: Kelurahan Bandengan, Kecamatan Pekalongan Utara, Kota Pekalongan)

2019 ◽  
Vol 3 (1) ◽  
pp. 21
Author(s):  
Zata Izzati Adlina ◽  
Agung Budi Sardjono ◽  
Suzanna Ratih Sari
Keyword(s):  
Land Subsidence ◽  
Risk Level ◽  
Sampling Techniques ◽  
Dominant Form ◽  
Sea Levels ◽  
High Wave ◽  
Urban Village ◽  
Physical Form ◽  
Rising Sea Levels ◽  
Physical Elements

Abstract: The occurrence of climate change and environmental problems resulted changes in Bandengan urban Village’s settlements, and especially on its physical elements. Bandengan urban Village as a settlement in coastal area was threatened by the “rob” disaster, which means the phenomenon of flooding result of rising sea levels that regularly occur until now. Moreover, there are also threats from high wave disasters, abrasion, Land Subsidence, and flooding. The existence of these phenomena, bring up responses from the community to adapt and survive in the environment from the threat of its disaster. This study aims to determine the form of adaptation that has been done by the community in settlements affected by the “rob” disaster in Bandengan urban Village. The research uses qualitative methods with descriptive approaches, and uses purposefully select sampling techniques. That is by taking the research zone in an areas that are suspected of having the highest risk, and the areas with the lowest risk level from the threat of “rob” disaster in Bandengan urban Village. The analysis was only focus on the physical form of houses element within the settlement, that’s because to get the specific and comprehensive findings. The results showed that the most dominant form of adaptation was divided into three groups, that were the avoidance adaptation was done by moving to another place that was more secure or evacuate, protect adaptation was done by creating dikes and fill with soil, as well as adaptation to accommodate was done by elevating the floor and lifted up the roof of the houseKeyword: Adaptation, Settlements, “Rob” disasterAbstrak: Terjadinya perubahan iklim dan permasalahan lingkungan mengakibatkan permukiman di kelurahan Bandengan mengalami perubahan secara signifikan, khususnya pada elemen fisik permukiman. Kelurahan Bandengan sebagai permukiman di daerah pesisir terancam oleh bencana rob, yaitu fenomena banjir akibat naiknya permukaan air laut yang rutin terjadi sampai saat ini. Selain itu terdapat pula ancaman dari bencana gelombang tinggi, abrasi, Land Subsidence, dan banjir. Adanya fenomena tersebut memunculkan respon dari masyarakat untuk menyesuaikan diri dan bertahan hidup di lingkunganya dari ancaman bencana. Penelitian ini bertujuan untuk Mengetahui bentuk adaptasi yang dilakukan masyarakat pada permukiman terdampak bencana rob di Kelurahan Bandengan. Penelitian menggunakan metode kualitatif dengan pendekatan deskriptif, serta menggunakan teknik sampling purposefully select. Yaitu dengan mengambil zona penelitian pada daerah yang diduga memiliki resiko tertinggi, dan daerah dengan tingkat resiko paling rendah terhadap ancaman bencana rob di Kelurahan Bandengan. Analisis yang dilakukan hanya berfokus pada bentuk fisik elemen rumah dalam permukiman, dikarenakan untuk mendapat hasil temuan secara spesifik dan komperhensif. Hasil penelitian menunjukkan bahwa bentuk adaptasi yang paling dominan dibagi menjadi 3 kelompok, yaitu adaptasi menghindar dilakukan dengan pindah ke tempat lain yang lebih aman atau mengungsi, adaptasi melindungi dilakukan dengan membuat  tanggul dan mengurug, serta adaptasi mengakomodasi dilakukan dengan meninggikan lantai dan meninggikan atap rumah.Kata Kunci: Adaptasi, Permukiman, Bencana Rob

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