Coastline Changes Research Articles

Studying development trend of coastline change in China using CiteSpace

The investigation of coastline alterations holds significant scientific and societal importance, particularly in guiding offshore engineering planning and design, as well as the economic development of coastal regions. In this study, we used CiteSpace software to examine relevant literature within the China National Knowledge Infrastructure database to explore the current status, hotspots, and frontiers of research on coastline change in China. Our findings revealed a consistent increase in the number of publications within this domain, with 1996 representing the first growth point in the number of publications on coastal changes. Since 2002, the number of publications has significantly increased owing to scientific and technological advancements and urban development. Research on coastal changes in China is primarily conducted in universities and research institutes, particularly at the Ocean University of China. However, research institutions and authors are widely dispersed, and the consistency between them is low. An apparent, balanced distribution phenomenon exists in this research field. Content related to keywords such as “coastline,” “coastal zone,” and “remote sensing” is the focus of research in this field. Remote sensing monitoring, big data analysis, and deep learning techniques are closely related to the study of coastline changes, representing the latest advancements in this field.

DINAMIKA DAN TANTANGAN PERUBAHAN PENGGUNAAN LAHAN DI WILAYAH PULAU KECIL (STUDI KASUS GILI MENO, TRAWANGAN DAN AIR)

Gili Matra is a small island in the northern part of Lombok Island that is vulnerable to climate change's impacts. Rising sea levels, coastline changes, abrasion, rising earth temperatures, and global warming consequences cause climate change. The pressure on the need for space to develop facilities and infrastructure to support tourism has resulted in a change in land use from green open land to built-up land. Based on these problems, this research aims to describe the dynamics and challenges in regulating land use in Gili Matra. The method used in this research is a descriptive, evaluative analysis using policy analysis and DPSIR (Drivers, Pressures, States, Impacts, Responses) analysis to facilitate systematic thinking in analyzing research objectives. The results of this study indicate that tourism development is a trigger for the development of space requirements in Gili Matra, which causes changes in land use. In addition, there needs to be more overlap in determining area functions and spatial planning, resulting in stronger implementation of spatial use control in Small Islands.

Monitoring and Forecasting of Coastal Erosion in the Context of Climate Change in Saint Louis (Senegal)

Owing to its unique physical and socio-economic characteristics, the Saint Louis region stands out as one of the most susceptible areas in Senegal to the adverse impacts of coastal erosion. The dynamics of erosion in this region are significantly influenced by the Langue de Barbarie (LB), a sand spit formed at the mouth of the Senegal River. Initially, in 2003, a 4 m wide artificial breach was strategically introduced to mitigate flooding; however, sediment dynamics expanded it to 6 km by 2020, thereby affecting the entire region. This study delves into the coastline change of the LB, specifically divided into three zones (LB-1, LB-2, and LB-3), spanning the period from 1994 to 2042. Leveraging Geographic Information System (GIS) and remote sensing techniques, our investigation reveals that, prior to the breach’s creation, the average dynamic coastline rates in zones LB-1, LB-2, and LB-3 were estimated at 4.4, 5.9, and 4.4 m/year, respectively. Subsequent to the breach, these rates shifted to −1.2, 8.4, and −2.7 m/year, with the most significant erosion observed alongshore of LB-3 at −6.6 m/year during the period 2002–2012. Projecting into 2032, LB-1 and LB-3 are anticipated to experience erosion rates of −11.5 and −26.8 m/year, respectively, while the LB-2 records an estimated accretion rate of 8.41 m/year. Eroded areas are expected to total 571,458 m2, while accumulated areas are expected to total 67,191 m2. By 2042, zones LB-1, LB-2, and LB-3 are expected to experience erosion rates of −23 and −53.6 m/year, resulting in the erosion of 1,021,963 m2 and the accumulation of 94,930 m2 with a dynamic rate of 168.2 m/year in zone LB-3. These results have significant implications for solving the urgent issue of coastal erosion in LB.

Tingkat Kerapatan Mangrove dan Perubahan Garis Pantai Tahun 2016-2022 Menggunakan Citra Satelit Sentinel-2A di Kecamatan Bungus Teluk Kabung

This study aims to, (1) Know the distribution and extent of mangrove land in Bungus Teluk Kabung District, (2) Know the density of mangroves in Bungus Teluk Kabung District, (3) Know the changes in coastline in Bungus Teluk Kabung District, (4) Know the relationship between mangrove density with changes in coastline in Bungus Teluk Kabung District. The research method used is descriptive quantitative, with data presented in the form of tables and maps. Based on the results of the study, (1) Changes in mangrove land area in 2016-2022 amounted to 84.04 ha to 94.39 ha spread in the sub-district of Teluk Kabung Tengah and Teluk Kabung Selatan. (2) The level of mangrove density in 2016 and 2022 is equally dominated by the density level of tight and then followed by the level of very tight, moderate, sparse and very sparse, where the tight level in 2016 is 81.57 ha in 2022 is 80.78 ha. (3) Shoreline changes in 2016-2022 are divided into 5 sectors. (4) The presence of mangroves does not significantly affect the occurrence of shoreline changes in the form of abrasion.

Study of coastal land change in sand mining activities in Bandar Batauga Village, South Buton Regency, Indonesia

Study of coastal land change in sand mining activities in Bandar Batauga Village, South Buton Regency, Indonesia

Penilaian Kerentanan Pesisir Berdasarkan Parameter Fisik di Pantai Utara Kabupaten Bekasi

Northern part of Bekasi Regency (Pantura Bekasi) has diverse land: a port area, fisheries, marine tourism, agriculture, residential, industrial and government. Various types of development are occured to support the community welfare. Developments occur without considering sustainability will result in a decline of environmental conditions, and each region will have its own ability to anticipate the impacts of changes that occurs. This research studied coastal vulnerability in the Pantura Bekasi and the relationship between their coastal physical parameters and the vulnerability. Field observations were also conducted as field validation and perceive current conditions. The results show that vulnerability is very high in Fishery port (PPI) Muara Jaya port zone (Mekar Coast), and low vulnerability occurred in Taruma Jaya port zone (Taruma Jaya Coast). Two paramaters are different in these two locations, they are coastline change and geomorphological. The coastline change at Mekar Coast is abrasion, and Taruma Jaya Coast is accretion. The geomorphological at Mekar Coast are a muddy beach and delta, while Taruma Jaya Coast is a swampy beach. Field conditions show that Mekar Coast has low mangrove density, while Taruma Jaya Coast has high mangrove density. These results hopefully can be used as policy consideration for the local government in optimizing coastal management planning, where the spatial plan for Pantai Mekar Beach is designated as a conservation area and demersal fisheries, while on Pantai Taruma Jaya as a public use area such as for Gas and Steam Power Plant (PLTGU) Muara Tawar, PPI Paljaya and port zone.

The Combination of Hvsr and Masw Methods with Landsat 8 Imagery to Assess the Changing Shoreline along the Coastal Area of Central Bengkulu

The Central Bengkulu Regency possesses a coastline measuring 21.8 km, situated in direct proximity to the Indian Ocean. The heightened wave and ocean current dynamics possess the capacity to induce detrimental effects in the form of coastal abrasion along the coastline. This study conducted an examination of the rate of shoreline changes resulting from coastal abrasion in Central Bengkulu Regency, Bengkulu, Indonesia. Horizontal-to-vertical spectral ratio (HVSR) analysis, multichannel analysis of surface waves (MASW), and Landsat-8 remote sensing were all used in the current investigation. The project gets started with conducting field investigations and measurements of geophysical techniques, including the collection of Landsat-8 satellite imagery spanning the period from 1990 to 2020. Additionally, an examination was conducted on the rate at which the shoreline undergoes changes in velocity. In order to determine the increase in change that occurs along coastlines over a period of several decades, a study was carried out during which Landsat-8 satellite images were analyzed. This study investigates the application of the HVSR technique for assessing the seismic vulnerability of the ground and, additionally, the MASW technique for measuring the shear wave velocity of the coastline’s soil. Both of these methodologies are compared and contrasted with one another in this research. The findings indicated that the mean pace of coastline change in Central Bengkulu Regency was 1.5 m/yr, with the maximum velocity recorded at 4.1 m/yr. This high velocity of shoreline change is correlated with the Vs30 value of MASW measurement and Kg of HVSR measurement, where the subsurface soil structure along the coast of Central Bengkulu Regency from Vs30 measurement shows that it is dominated by stiff soil structure that is susceptible to erosion. Outcomes from the study can inform decision-making processes about safeguards and preventative measures to prevent further coastal degradation. HIGHLIGHTS In this paper, we present a framework using application passive and active seismic method with Landsat 8 for knowing the changing of shoreline coastal area in Central Bengkulu Indonesia This study demonstrated that the high velocity of the shifting shoreline is correlated with Vs30 and Kg values The subsurface soil structure is predominantly composed of stiff soil, and the changing shoreline starts at 1.5 mm/yr, which makes the coast of Central Bengkulu vulnerable to erosion GRAPHICAL ABSTRACT

Synergetic evolution mechanism of coastal resources utilization and coastline change of muddy coast in Jiangsu

Coastal areas possess unique geographical advantages and abundant resources, making them economic development hubs for coastal cities worldwide. However, the overexploitation of coastal resources significantly impedes the sustainable development of these areas. To address this issue, it is crucial to gain a comprehensive understanding of resource utilization patterns over time. Previous studies on resource utilization in the coastal areas of Jiangsu, China, have primarily relied on historical narratives with limited quantitative assessments. In this study, we utilize the Resource Utilization Comprehensive Index (RUCI) to evaluate the status of resource utilization in Jiangsu's coastal areas for the last 1300 years. Based on the characteristics of coastline changes from the Tang Dynasty to 1929 analyzed through the Digital Shoreline Analysis System (DSAS) in ArcGIS, we use entropy weight method (EWM), gray relation analysis (GRA) and Pearson correlation coefficient to determine the RUCI of coastal areas in Jiangsu and analyze its correlation with each evaluation index and influencing factor. The results show that (1) over the past 1300 years, the coastline of Jiangsu primarily underwent a sedimentation process characterized by three stages: slow sedimentation, rapid sedimentation, and north erosion followed by south sedimentation, (2) the comprehensive utilization of resources along the Jiangsu coast was gradually developed from the Tang Dynasty to the Republic of China, with the best utilization achieved during the Qing Dynasty, and (3) the changes in the coastline exhibited a substantial influence on the comprehensive utilization of resources and there was a high correlation between the two. Based on these findings, we propose several policy development suggestions. This study provides a scientific basis for understanding the synergetic evolution mechanism of coastal resources utilization and coastline change in Jiangsu under global change.

Monitoring and Analysis of Coastline Changes in the Coastal Area of Bali Island, Indonesia

Erosion and accretion occuring in coastal areas are indications of changes in the coastline’s position. The beach areas in Bali have high economic value as tourist attractions; yet, the condition of the beaches in several places on the island is very concerning. Monitoring shoreline changes can be accomplished using remote sensing technology which is more efficient than the conventional methods. This paper describes the results of changes in the coastline from 2014 to 2021 with remote sensing for all coastal areas of the island of Bali surveyed in the field. This research has successfully detected changes in coastlines throughout the coastal areas of Bali Island by remote sensing method and verified by field survey. The survey results also show that remote sensing method has met the survey from previous studies specifically in Gianyar Regency and Jembrana Regency. Hence, it is applicable for further use in other areas.

Geospatial analysis of shoreline changes in the Oman coastal region (2000-2022) using GIS and remote sensing techniques

This research introduces an innovative method employing the Canny edge detector for automatic and precise coastline extraction, aiming to analyze spatial and temporal variations in the Oman coastline from 2000 to 2022 using GIS and remote sensing (RS) techniques. Focusing on both multi-decadal and short-term periods, the study aims to detect accretion and erosion rates through the observation and interpretation of coastal changes. Utilizing the Digital Shoreline Analysis System and LANDSAT imageries, Shoreline changes have been quantitatively evaluated using three distinct approaches: Linear Regression Rate (LRR), End Point Rate (EPR), and Net Shoreline Movement (NSM). The dynamic nature of the Oman coastal region necessitates a comprehensive understanding of its evolving coastline. Our investigation applies digital shoreline analysis to discern shifts in the coastline’s position, employing a multiple regression approach for quantifying the rate of coastal change. To facilitate automatic shoreline extraction, various methods were experimented with, ultimately determining the Canny Edge algorithm’s superiority in yielding precise results. The paper outlines the monitoring procedures for the coastal area and analyzes coastline changes using geospatial techniques. This analysis provides valuable insights for the planning and management of the Oman shore. Furthermore, the proposed model’s applicability is rigorously tested against other generic edge detection algorithms, including Sobel, Prewitt, and Robert’s techniques. The conclusive findings demonstrate that our model outperforms these alternatives, particularly excelling in the accurate detection of the coastline. This research contributes to a deeper understanding of coastal dynamics and offers a robust methodology for coastal monitoring, with implications for effective planning and management strategies in the Oman shore region.

Coastline stability analysis of Zhoushan-Liuheng lng terminal project based on remote sensing

Seabed evolution research around Zhoushan Liuheng LNG receiving station project, which mainly includes collecting, analyzing and sorting data of environmental investigation, was conducted by the second Institute of Oceanography, MMR. Based on the data of remote sensing and field survey for different years, the comprehensive research methods of dynamic geomorphology, sedimentology, stratigraphy and mathematical simulation are used to carry out the geomorphological investigation of the sea area near the Zhoushan Liuheng LNG terminal project. This paper makes a detailed analysis of the beach dynamics, seabed scouring and silting change characteristics of the project sea area, and makes a prediction of the beach channel scouring and silting adjustment trend caused by sea related projects, which provides a scientific basis for optimizing the plane layout of Zhoushan Liuheng LNG receiving station project and insight for other researchers who focus on coastline change and remote sensing.

Mitigasi Abrasi Berbasis Kearifan Lokal Di Kabupaten Waropen Kampung Sanoi Dan Pantai Ronggaiwa

Sanoi Village and Ronggaiwa Beach are villages that are located in Waropen District and are part of the province of Papua. Along the Sanoi Village Road and Ronggaiwa Beach is a road that runs along the coastline and is an accessibility route between villages and the logistics of maritime transportation which is an economic route of the Waropen District Government so abrasion handling must be carried out immediately. The study examines the extensive calculations and advance backward coastline and also the exploitation of the local wisdom of the community as an abrasion countermeasures.The research methods used to the objectives of the study are quantitative descriptive methods, spatial analysis, time series analysis and analysis of local intelligence indicators. Quantitative deskriptive analysis is by displaying field images and presenting width changes in coastlines and coastline backward velocities throughout 2012, until 2022. Spatial analyses using ArcGIS software and field observations. Time series analysis to observe the changes in the width and backward speed of coasts by looking at the 2012 image, up to 2022. Local intelligence indikator analysis is an analysis that identifies the local abilities that communities use in performing abrasion backwardness. The results of the research showed that there was a wide change of coastline and the rate of reversal of the coastal line along the year 2012 to 2022, in which four years once counted the area of blood abrasion and the speed of retrocession of coastal lines. Based on the results of observations found that the change in coastalline occurred due to the magnitude of abrasions that occurred in Sanoi Village and Ronggaiwa Beach. However, with the knowledge of local wisdom that the community possesses, it can prevent and control abrasion by using the environment to form the traditional talud that is often referred to as the local community with the name Talud Rufia.

Remote Sensing Observations of a Coastal Water Environment Based on Neural Network and Spatiotemporal Fusion Technology: A Case Study of Hangzhou Bay

The coastal environment is characterized by high, multi-scale dynamics and the corresponding observations from a single remote sensing sensor are still facing challenges in achieving both high temporal and spatial resolution. This study proposed a spatiotemporal fusion model for coastal environments, which could fully enhance the efficiency of remote sensing data use and overcome the shortcomings of traditional spatiotemporal models that are insensitive to small-scale disturbances. The Enhanced Deep Super-Resolution Network (EDSR) was used to reconstruct spatial features in the lower spatial resolution GOCI-II data. The spatial features obtained instead of GOCI-II data were fed into the spatiotemporal fusion model, which enabled the fusion data to achieve an hour-by-hour observation of the water color and morphology information changes at 30 m resolution, including the changes in the spatial and temporal distributions of suspended particulate matter (SPM), the characterization of the vortex street caused by the bridge piers, the inundation process of the tidal flats, and coastline changes. In addition, this study analyzed the various factors affecting fusion accuracy, including spectral difference, errors in both temporal difference and location distance, and the structure of the EDSR model on the fusion accuracy. It is demonstrated that the location distance error and the spectral difference have the most significant impact on the fusion data, which may lead to the introduction of some ambiguous or erroneous spatial features.

Association mining of coastline change and land use patterns to enhance conservation

Coastal zones, as interfaces between marine and terrestrial ecosystems, possess great ecological and economic value but are environmentally fragile. This research provides a new perspective for studying development and change patterns in coastal zones, offering insights for land planning and contributing to the ecological preservation and sustainable development of coastal areas. We utilized Landsat TM and OLI sensor imagery (from the years 1990, 2000, 2010, and 2020) to extract coastline and land use information from the coastal zone of Shandong Province. Through the establishment of association mining models between coastline changes and land use patterns, the relationships between spatial layout changes and development processes in different geographical locations are revealed. In the initial stage, weak expansion and moderate changes in the coastline corresponded to units with lower land development intensity sequences. In the intermediate stage, with increasing coastline expansion and intense changes, the sequence of land development intensity was extremely strong > strong > moderate > weak from the sea to the land. This type of association was mostly distributed in the Laizhou Bay salt field and coastal port areas and was mostly focused on aquaculture and port trade, causing “strong” and “extremely strong” units of regional land development intensity. In the later stage, as coastline expansion slowed, the use of ports and docks caused the development intensity of the surrounding land to fluctuate. Farming, fishing, salt field and port construction in the coastal zone of Shandong Province were the major forms of land expansion and change. The association rules between coastline expansion or erosion and coastal development intensity revealed the impact of coastline changes on the spatial pattern from sea to land, which is important for planning layouts, optimizing industrial structures, and maximizing socioeconomic and environmental benefits in coastal areas.

Study of The Impact of Coastline Changes on Coastal Settlement Areas Along th East Coast of Minahasa

The natural phenomenon of abrasion on the east coast of Minahasa which occurred from 1980 to 2020 has brought about changes in the coastline which then threatens the existence of coastal residential areas. Land function data in this study uses data sourced from the USGS (United States Geological Survey) Landsat-5 TM Imagery web and also Google Earth Pro Data, the data is in the form of historical image data with 10-year intervals and starting from 2003 to 2023. In 20 years there has been an increase in the area of built-up land for settlement functions in each village. The function of plantation land has been reduced in area as a result of settlement development. Meanwhile, sandy coastal land has also experienced a reduction in area as a result of sea waves and abrasion. The results showed that Atep Oki Village had experienced the farthest coastal setback of 42.28 m, while Kamenti Village and Parentek Village, respectively as far as 27.27 m and 23.33 m. These findings have confirmed the impact of waves that damaged the coast of Atep Oki village in 2013. It also shows that the abrasion process will be continue on the coast of Atep Oki village and its surroundings. The measured coastline setback distance is around 23 - 43 meters which causes a reduction in the area of residential land as well as damage to house buildings, road infrastructure and boundary embankments. Residents must move their residence to an area that is safer from the threat of waves and abrasion processes. Damaged house buildings especially those made of wood and plywood require repair costs while most residents have limited income as farmers, cultivators and fishermen. This condition causes the threat of loss of living environment and increased spending due to abrasion disaster adaptation efforts.

Changes of Yancheng coastline near 20 years based on remote sensing technology

The study of coastline changes is crucial for the monitoring, development, and management of coastal environments. This article specifically focuses on the coastline of Yancheng. To analyze the changes of coastline, latest remote sensing images of Landsat series from 2002 to 2021 were selected. Threshold segmentation was employed to extract the coastline from these images. Subsequently, tidal level correction was applied to rectify the instantaneous water edge in the binary image of the target coastal area based on tidal channels, resulting in the acquisition of the target coastline. Finally, the obtained target coastline from different time periods were inputted into the Digital Shoreline Analysis System (DSAS). DSAS can be used to assess coastline changes using the end point change rate (EPR) and linear regression change rate (LRR). The research findings reveal that the average siltation rate of various sections along the Yancheng coastline is 105.62 m/y, with the maximum siltation length measuring 12,048 m, located in the Tiaozini reclamation area. Conversely, the maximum erosion length is 1820 m, situated near the mouth of the Shuangyang River. Taking the Sheyang River mouth as the boundary, the northern coastline of the river mouth experiences predominantly erosion, while the southern coastline is primarily affected by sedimentation. Moreover, the rate of coastline change gradually increases from north to south. The transformation of artificial coastline is the outcome of a combination of natural and human factors. Agricultural reclamation, port construction, and coastal protection engineering are identified as the main reasons for the artificial and seaward advancement of coastline. This study provides a foundation for the construction and protection of Yancheng’s coastal zone and offshore engineering. It holds significant practical implications for urban planning and development.

Changes of coastline and tidal flat and its implication for ecological protection under human activities: Take China’s Bohai Bay as an example

The change processes and trends of shoreline and tidal flat forced by human activities are essential issues for the sustainability of coastal area, which is also of great significance for understanding coastal ecological environment changes and even global changes. Based on field measurements, combined with Linear Regression (LR) model and Inverse Distance Weighing (IDW) method, this paper presents detailed analysis on the change history and trend of the shoreline and tidal flat in Bohai Bay. The shoreline faces a high erosion chance under the action of natural factors, while the tidal flat faces a different erosion and deposition patterns in Bohai Bay due to the impact of human activities. The implication of change rule for ecological protection and recovery is also discussed. Measures should be taken to protect the coastal ecological environment. The models used in this paper show a high correlation coefficient between observed and modeling data, which means that this method can be used to predict the changing trend of shoreline and tidal flat. The research results of present study can provide scientific supports for future coastal protection and management.©2024 China Geology Editorial Office.

Hydrodynamic Analysis-Based Modeling of Coastal Abrasion Prevention (Case Study: Pulau Baai Port, Bengkulu)

Pulau Baai Port, located strategically in the Indian Ocean and considered a vital maritime hub in Indonesia, grapples with persistent challenges related to abrasion and sedimentation, which negatively impact its maritime infrastructure. One of the affected components is the exposed gas pipeline installation along the port’s coastline. The sedimentation rate along Pulau Baai’s coastline is alarming, ranging from 600,000 to 800,000 m3/year, resulting in coastal abrasion at a rate of up to 20 m/year. This study focuses on three scenarios using MIKE 21, including a baseline without alternatives, shore protection alternatives, and jetty protection alternatives. A comprehensive dataset, incorporating bathymetric maps, wave patterns, current data, and sediment characteristics, supports the analysis of coastal dynamics, emphasizing the urgency for intervention. The research introduces the novelty of analyzing coastal abrasion through the exposure of underground pipelines, establishing a relationship between impacting factors such as wave height, tides, sedimentation, and coastal abrasion. Mitigation alternatives, particularly alternative model-2 with jetty protection, are recommended based on a thorough evaluation of the model performance and actual measurements. The results show that Pulau Baai’s sediment, primarily sandy, experiences substantial abrasion and coastline changes, notably in alternatives-2 and -3. The study anticipates potential sedimentation in certain sections of the subsea exposed pipelines in the absence of shore protection. The outcomes of this research provide a foundational guide for informed decision making and strategies to ensure the sustainable functionality of maritime infrastructure in Pulau Baai and similar coastal regions.

Coastal evolution and future projections in Conde County, Brazil: A multi-decadal assessment via remote sensing and sea-level rise scenarios

Global sea levels, having risen by approximately 20 cm since the mid-19th century, necessitate a critical examination of their impacts on shoreline dynamics. This research evaluates the historical (1985–2022) and future shoreline changes in Conde County, Paraíba State, Brazil, an area of significant touristic interest. Employing Landsat satellite imagery, the study utilized the Digital Shoreline Analysis System (DSAS) and a Kalman filter algorithm for cloud removal, while also assessing land use and land cover changes using data from the MapBiomas Project for 2000, 2010, and 2020. These analyses informed projections of potential inundation under various sea-level rise (SLR) scenarios: 1, 2, 5, and 10 m. Key findings revealed a negative average coastline change rate of −0.27 m/year from 1985 to 2022, indicative of erosive trends likely accelerated by human activities. Long-term projections for 2032 and 2042 anticipate continued erosion in areas identified as highly vulnerable. The SLR scenario analysis underscores the urgent need for adaptive climate measures; while a 1- or 2-meter SLR presents limited immediate effects, a 5-meter rise could lead to significant inundation across key sectors, including urban and agricultural landscapes. The projected severity of a 10-meter SLR necessitates immediate, comprehensive interventions to safeguard both natural and human systems.

Mapping shoreline changes using Landsat Imagery at Pemalang, Central Java Province, Indonesia

Pemalang Regency possess sloping geographical with shallow waters, it’s potential to increase the area for pond fisheries and coastal tourism. This utilization causes changes in the coastline, which influenced by mankind and natural factors. The study aims to map shoreline changes in Pemalang, Central Java from year 2007-2022 using imagery of Landsat 7 ETM+ and Landsat 8 OLI/TIRS. The Digital Shoreline Analysis System (DSAS) method was performed to calculate rate of change statistics for a time series of shoreline vector data. This method uses parameters, including baselines, shorelines, and transects. The DSAS results in the year 2007-2022 shoreline change (NSM) and the 15-year mean shoreline change (EPR). All subzones occurred abrasion. Subzone D2 occurred greatest abrasion (- 442.43 m). Subzones undergoing accretion include A1, A3, B1, B3, C2, C3, D1, D2, E2, and E3. The largest accretion occurs in A3 (333.05 m). Pemalang Beach in the year 2007-2022 occurred a change in coastline dominated by abrasion. The largest abrasion is in A3 (-2.39 m/year) and the smallest is in A2 (-1.89 m/year). The abrasion factors are the sloping beach, land use as tourist area, mangroves that are not maintained, and the flooding in May 2022. The changes in the coastline that have occurred are severe up to very severe.