Assessment of Shoreline Changes for the Selangor Coast, Malaysia, Using the Digital Shoreline Analysis System Technique (original) (raw)
Related papers
ESTEEM Academic Journal, 2023
Kelantan is a Malaysian state renowned for its beautiful jungles and coastal districts. Kelantan, which is susceptible to monsoons and tidal waves, witnessed a tsunami-like inundation that affected its coastline landscape in 2014. This study does a comparative examination of shoreline alterations between 2013 and 2021 using the Digital Shoreline Analysis System (DSAS) technology. The coastline has grown by approximately 4.03 percent, from 62.1 kilometres to 64.6 kilometres, as a result of the implementation of digitalisation procedures. This highlights the increase in coastline areas between 2013 and 2021. Using GIS and satellite data, the study identifies considerable sedimentation in Pantai Geting and Lagun Jubakar, Tumpat, as well as severe erosion in Pantai Kundur and Pantai Cahaya Bulan, Kota Bharu. The analysis of the Shoreline Change Envelope (SCE) and Net Shoreline Movement (NSM) reveals an accretion rate of 728.44 m/year and a negative distance of-281.91 m/year, which indicates erosion. The paper concludes by emphasising Kelantan's shoreline expansion over the previous decade, stressing the significance of monitoring coastal changes for effective environmental management and catastrophe preparedness.
Extraction of shoreline changes in Selangor coastal area using GIS and remote sensing techniques
Journal of physics, 2017
Nowadays, coastal zones are facing shoreline changes that stemming from natural and anthropogenic effect. The process of erosion and accretion will affect the physical environment of the shoreline. Therefore, the study of shoreline changes is important to identify the patterns of changes over time. The rapid growth of technology nowadays has facilitated the study of shoreline changes. Geographical Information System (GIS) alongside Remote Sensing (RS) technology is a useful tool to study these changes due to its ability to generate information, monitoring, analysis and prediction of the shoreline changes. Hence, the future projection of the trend for a specific coastal area can be done effectively. This study investigates the impact of shoreline changes to the community in Selangor area which mainly focus on the physical aspects. This study presents preliminary result using satellite image from SPOT 5 to identify the shoreline changes from the year 1984 to 2013 at Selangor coastal area. Extraction of shoreline from satellite image is vital to analyze the erosion and accretion along the shoreline area. This study shows that a shoreline change for the whole area is a categorized as a medium case. The total eroded and accretion of Selangor area from 1984 to 2013 is 2558 hectares and 2583 hectares respectively. As a result, Kapar, Jugra, Telok Panglima Garang and Kelanang are categorized as high risk erosion area. Shoreline changes analysis provides essential information to determine on the shoreline changes trends. Therefore, the results of this study can be used as essential information for conservation and preservation of coastal zone management.
Temporal Geospatial Shorelines Changes Analysis in Klang Coastal Area
The coastal area of Klang at the eastern of Malaysia contains different types of land covers that are surrounded by the urban and mangroves areas. These areas are significant for environmental biodiversity. This article focuses on the erosion along the Kapar to Jeram coastal areas. The purpose of this study is to monitor the 41 years of shoreline changes using satellite imageries from 1974 to 2015 (Landsat TM and ETM+). The coastline is delineated by using the histogram slicing technique. One hundred transects were sampled at 200 meter intervals along the shoreline. The transects were obtained by calculating the rate of change of mangrove shorelines and distance. Finding shows that an average for the shoreline rate of change was 5 m/year . The results of this study will be translated to propose a policy for environmental mitigation. The outcome of this study will introduce the proposed environmental mitigation for future planning in the specific sectors of coastline.
Analysis of Shoreline Changes in the Coastal Area of Kuala Terengganu, Malaysia
2020
The analysis of shoreline change trends is fundamental to a broad range of investigations undertaken by coastal scientists, coastal engineers, and coastal managers, as well as the government, in this case, the coastal development policy-maker. In order to know the changing of shoreline position around the coastal area of Kuala Terengganu, an analysis and then simulation of shoreline change was performed over, respectively, 2 years, 3 years and 4 years. In this simulation, the longshore distance was divided into 87 cells of length 34 m. Shoreline positions from satellite imagery in 2010 were used in this simulation as the initial condition. Based on the numerical result, both erosion (north side) and accretion (south side) occurred around the Sultan Mahmud Airport, Kuala Terengganu. The average erosion and accretion during the 4 year period is 42.93 m and 40.89 m, respectively.
2013
Abstract- A large percentage of the world's population and industrial activity is concentrated along the coastal zone. These environmentally sensitive areas are under intense pressure from natural processes, urban growth, resources development, and pollution. These threats have made the coastal zone a priority for shoreline monitoring programs. This research utilizes multi-temporal satellite imagery to monitor shoreline changes from 1992 to 2009 at Seberang Takir, Terengganu, Malaysia through the use of image processing algorithm and statistical analysis. All the imagery was geo-rectified to the Malaysian Rectified Skew Orthomorphic (MRSO) projection and analysis was done to detect spatially significant areas with erosion and accretion along the shoreline and detect potential sources of the changes. The shoreline was divided into 16 sited and shoreline changes at the sites were determined based on satellite sensor imagery. Preliminary result show erosion occurring near to human...
2024
The continuous change of shoreline boundaries due to natural or human causes has created the necessity for shoreline monitoring. Sedimentation occurs in shallow water level areas where a river or creek discharges into the sea or ocean. Continuous erosion and sediment accumulation cause shoreline changes, which may result in losing land soil or destructive accumulation of sediments. This catastrophic natural event may harm coastal lands with economic value, such as beaches, agricultural areas, residential buildings, and hotels. Traditional shoreline monitoring is done by physically collecting data over a period of time in the desired location. Standard methodology requires many things, such as workforce, funding, and, more importantly, a long duration. This study examines monitoring shoreline change in Alanya, Türkiye, with Digital Shoreline Analysis System (DSAS) by using geographical information systems and remote sensing analysis. The study area is narrowed step by step by constructing different models to compare the results. The smallest microzone is selected as Dim River mouth in Alanya, Türkiye, for being naturally dynamic and having less human activity, which may cause artificial changes in shorelines. The research consists of analyzing the satellite images from two different satellites, Landsat and Planet, and corresponding reanalysis data of the coastline. Based on the results, seasonal and cyclical behavior is obtained in the area. As the study area decreases, the changes in shoreline changes. Throughout the study area, mostly erosion is observed. In Dim River Mouth, the seasonal change in shorelines is obtained roughly between -25 and +25 meters for Landsat-8 imagery and -8 and +4 meters for Planet imagery.
Impact of Shoreline Changes to Pahang Coastal Area by using Geospatial Technology
Sains Malaysiana
Malaysia has a long coastline stretching over 4,809 km where more than 1,300 km of beaches are experiencing erosion. Coastal erosion is recognised as the permanent loss of land and habitats along the shoreline resulting in the changes of the coast. Thus, it is important to detect and monitor shoreline changes especially in Pahang coast by identifying the rate of shoreline erosion and accretion. This study used temporal data and high spatial resolution imagery (SPOT 5) using remote sensing and GIS techniques to monitor shoreline changes along 10 study locations, which is from Cherating to Pekan of the Pahang coast. The total length of shoreline changes is about 14 km (14035.10 m) where all these areas are very likely to experience erosion ranging from 0.1 to 94.7 ha. On the other hand, these coastal areas found a minimal accretion with increased sediment from 0.1 to 2.8 ha. Overall, the coastal areas are exposed to higher erosion process than accretion with a very high vulnerability of erosion rate from 1.8 to 20.9 meter per year. The findings on monitoring shoreline changes and identifying vulnerable erosion areas might be useful in the policy and decision making for sustainable coastal management.
Civil Engineering Journal, 2020
Cua Dai estuary belonged to Quang Nam province is considered to be one of the localities of Vietnam having a complex erosion and accretion process. In this area, sandbars are recently observed with lots of arguments about the causes and regimes of formation. This could very likely result of not reliable source of information on shoreline evolution and a lack of historical monitoring data. Accurately identification of shoreline positions over a given period of time is a key to quantitatively and accurately assessing the beach erosion and accretion. The study is therefore to propose an innovative method of accurately shoreline positions for an analysis of coastal erosion and accretion in the Cua Dai estuary. The proposed technology of multitemporal remote sensing and digital evaluation model with tidal correction are used to analyse the changes in shoreline and estimate the rate of erosion and accretion. An empirical formula is, especially, exposed to fully interpret the shoreline evo...
Journal of Degraded and Mining Lands Management
Coastal areas are found in the dynamic zone at the interface between the three major natural systems of the Earth's surface. The phenomenon of shoreline change is one of the most frequent problems encountered in the coastal environment and is caused by natural processes that result in dynamic changes in the coastal area. Coastal area change can affect the vulnerability of the coastal environment and its properties, such as shoreline stabilization, flood control, sediment retention, natural protection and others. The method of integrating remote sensing data with geographic information system (GIS) techniques has been widely used to monitor and analyze the dynamics of shoreline change in coastal areas. The purpose of this study is to map and analyze the dynamics of shoreline change from 1978 to 2017 in the study area. An approach combining spectral value index and visual interpretation of Landsat images was used and proposed to indicate the separation of land and water bodies, for shoreline extraction. The normalized difference water index (NDWI) can be used as a spectral value index approach for differentiating land and water bodies. Furthermore, the analysis of shoreline changes was performed using the digital shoreline analysis system (DSAS). Based on calculations made using DSAS, it can be seen that the pattern of coastline change tends to be dominated by offshore erosion. The results of this study may also be important as input data for coastal hazard assessment as part of the effort to overcome the problem of flood tides.
International Seminar on “Computational Environmental Earth Science” (CEES 2022), 2022
This research article summarizes the techniques for integrating Remote Sensing and GIS, with field measurements for validating and analyzing the shoreline Changes. Geomorphic evolution of coast also identifies by using Multi-temporal Landsat Satellite Data of the year’s 1969, 1992, 2000, 2010 and 2019. Coastal Digital Elevation Model (DEM) Data was retried by Shuttle Radar Topography Mission (SRTM) data for identifying the inundation area in the coast. Shoreline changes were elucidated using Digital shoreline analysis system (DSAS) analysis. It has identified that accretion as well as erosion takes place in the present study area. The findings of the present study from the coastal region of Tuticorin can be used as Coastal Change Analysis, in particular the variation in Shorelines and Sea Level Rises important for coastal disaster reduction, environmental conservation, resource management and decision making on coastal development