Abstract— Subsidence has been a very disturbing issue due to a very dense populated area at the north part of Jakarta as well as the endangered government infrastructure that existed in along the coastline. The subsidence in Jakarta has become a consideration to build another infrastructure or any other infrastructure to prevent Jakarta from Subsidence. Due to Subsidence process, there are some consequences has to be bare such as building damages and flooding that has become fidgety for people along the coastline. Today the sea level has become higher than houses along the shoreline. The research conducted in Sunter area that has been completed with sufficient geotechnical data with groundwater level measurements from 1985 and geodetic measurements since 1985. Based on the data, the rate of subsidence calculated as settlement and calibrated with Geodetic GPS measurements. As the result, the rate of subsidence for existing condition is not affected by the rate of groundwater level decreasing during 1985 to 2015 around 0.3 meters/year. Modeling continues using extreme scenario that reaches 1.5 meters/year and the result is ground water has a significant effect on subsidence. The percentage of groundwater effect on subsidence in normal condition is less than 5% but in extreme condition is around 30%. …show more content…
Flood has become fidgety for people along the coastline yet the sea level has become higher than the land they live in. in this situation, the government has to take action for controlling the subsidence. In order to create some infrastructure to prevent subsidence or subsidence effect, there has to be a study that explains the subsidence mechanism in Jakarta. It is recommended for local government agencies to conduct better disaster management and relief fund management. Early warning system should be installed and executed by responsible local authorities
Gabrysh, R. K. "Land surface subsidence in the Houston-Galveston region." IASH Publ. (1969): pp. 43-44.
manmade levees, dikes, and other flood control measures, is a case in point. In a
...ments. Geospatial technologies, such as LiDAR, can assist in mapping the flood vulnerability of particular areas. There is a wealth of information from the federal agencies, such as flood hazard maps developed by FEMA and sea level rise calculators. This information can also be used proactively to identify locations where restoration could be most effective and to discourage development in areas that still have their natural coastlines in tact. In some cases, structures can be updated to be more hurricane and flood proof by as using stronger materials and building at higher elevations. Buildings can also be designed to allow flooding to occur with minimal damage. Another alternative is to actually relocating people and buildings in the most high-risk areas. This will be exceedingly difficult as population increases and demand for coastal development is on the rise.
In Central Florida, sinkholes are a growing crisis. The causes of these sinkholes are numerous, but one of the main causes is because of Florida’s karst topography. According to the Oxford Dictionary, karst topography is “Landscape underlain by limestone that has been eroded by dissolution, producing ridges, towers, fissures, sinkholes, and other characteristic landforms.” Although sinkholes form unexpectedly without much warning, there are ways to prevent harm to people in Florida. Some ways to prevent sinkholes from causing harm and destruction is through methods of stabilization such as grouting, compaction grouting, underpinning, and remediation. Repairing a sinkhole can be terribly expensive, so choosing the right method is crucial when restoring sunken landscape.
Land subsidence in Jakarta is triggered by natural and anthropogenic process. Since Jakarta is located on alluvial plain, natural-compaction of deposits causes land subsidence (Chaussard et al., 2013). On the other hand, anthropogenic-induced land subsidence is a result of inappropriate human activities with government plan. Raucoules, Colesanti, & Carnec (2007) and Yuill, Lavoie, & Reed (2009) enlightened that some anthropogenic processes of land subsidence results from groundwater extraction, surface water drainage change, sediment loading, and other human-induced activities. As consequence, land subsidence due to groundwater extraction restricts sustainable development of resources, environment, and economy (Wang,
Living in Bangladesh, we have seen quite disastrous mudslides from the past few years. Mudslide is also called a landslide or a land slip. It is a downward mass movement of earth or rock on unstable slopes, including many forms resulting from differences in rock structure, coherence of material involved, degree of slope, amount of included water, extent of natural or artificial undercutting at the base of the slope, relative rate of movement, and relative quantity of material involved. There are numerous facts that can cause a mudslide and there are also numerous effects that it can cause us.
Tectonic geomorphology is defined as the study of landforms produced by tectonic processes, or the application of geomorphic principles to the solution of tectonic problems (Keller, E.A. and Pinter N. 1996). Geological structure plays a crucial role in determining a wide field of relief forms, even in areas where exogenetic factors are regarded as the dominant ones in the landscape (Ahnert 1998; Bloom 1998; Ritter et al. 2002). In recent years Digital Elevation Model (DEM) data and Geographical Information System (GIS) technologies have been extensively used to determine the morphometric properties of tectonically active regions. In addition the use of Remote Sensing and GIS techniques to evaluate the tectonic formation of the surface is an emerging trend in the recent researches carrying out in different parts of our country and the world. There is not a single record except satellite data and DEM in the world to evaluate the tectonic formation of the surface. So the for present study Digital Elevation Model data has used for evaluation of tectonic formation of different feature (Geomorphic Units) within the Mula river basin. Good surface analysis research should provide the following information: formation of the basin area, formation of the different geomorphic feature, spatial distribution of geomorphic features. In present article, we have used Remote Sensing and G.I.S. tool to examine the formation of the river basin using DEM analysis. Morphotectonic study plays an important role in deciphering the effects of tectonic activity in the geomorphic evolution of the drainage basins, .Morphotectonic analysis is the study of landforms produced by tectonic processes.
Abstract---Geosynthetics, the polymeric products, have started to play a major role in solving a handful of Civil Engineering problems. Be it the patching of the pavement surface, poor stability of the soils, sub-surface drainage problems or the problems concerned with the erosion of soil, Geosyntheticshas an answer to effectively eradicate all these problems. So, a look into the properties of the Geosynthetics will enable us to get a greater perception of the role that the Geosynthetic materials can play. It is economical,
Subsoil investigation is a type of site exploration that involves sampling and testing the soil at the site to obtain geotechnical information for a safe geotechnical evaluation and design. It is a discovery of the ground conditions which will be built on.
Regarding to the land subsidence, most of the responds and efforts taken in pre-disaster phase and some of them are in post-disaster. The pre-disaster phase includes risk identification, risk mitigation, and preparedness (Freeman et al. 2003). Its aim is to strengthen households and community’s capacity and resilience in protecting their livelihoods (Baas et al. 2008). In pre-disaster phase, public authorities’ roles are to respond and mitigate the risk. The response contains the action to forecast
Although, flooding is large-scale global problem, there are only three “key players” or agents that can either make or break a ...
Disaster is a sudden calamitous event that brings huge destruction, damage and loss to property and life. The damage varies depending on geographical location, earth’s surface, and climate. Disasters retard the development of a country, region or area. In this chapter, we shall discuss disasters, their types, impacts, and precautions to reduce the loss.
The literature on disaster management in India, by and large focuses on case studies of specific disaster events and types. Much has been written and deliberated on disaster management in various forms of literature like books, internet, journals, articles and papers. However, most of the research has been focused either towards earthquakes or floods and only limited research on coastal disasters and the role of armed forces in dealing with such crisis has been carried out yet. Limited published material on the subject is available at DSSC, hence majority of the references are being made from the internet sites which hold a vast amount of information. Study material is being collected from the following
Landslides are one of the most common destructive geological processes on the surface of the Earth and are accountable for loss of lives and property every year. Landslides are frequent and widespread geomorphological phenomena over mountainous regions and steep terrains are affected severely. It destroys fertile lands and is a major threat to urban and industrial development. Landslides cause changes in the morphology of the landscape and drop in land productivity (Blaschke et al., 2000).
..., then it could be that the area is in low permeability clay-like soils. This can lead to a landslide after a number of rain storms that eventually lead to a final rainfall session that causes the landslide. The groundwater pressure affects the slope stability of the area. If a landslide was in fact occurring because of rainfall, we would see a wave of material suddenly appearing. You would be able to measure how fast it’s going because rainfall does affect the speed of the landslide. The ground will get waterlogged by the heavy rain. If the landslide were occurring because of an earthquake, you would be able to feel the land vibrate from the movement. These landslides can typically begin to carry objects like cars, houses, and trees. The earthquake may cause a lower amount of frictional resistance and a difference in the pore water pressure caused by an earthquake.