Regular monitoring and analysis of coastal changes

Oct 13, 2025 by pynkocean.com 24 views

Coastal Change Model with the One Line Model Method: A Case Study of Pantai Cermin, Serdang Bedagai Regency, North Sumatra

Introduction

Pantai Cermin in Serdang Bedagai Regency, North Sumatra, has long been a popular tourist destination and a significant source of economic income for the local community. However, in recent years, this area has experienced significant coastal erosion and damage to the coastal area. This phenomenon is mainly caused by the process of coastal dynamics, such as abrasion, which has a negative impact on the balance of coastal ecosystems. Understanding the characteristics of waves that occur at Cermin Beach is crucial for researchers and coastal managers to develop effective strategies for coastal protection and management.

The Importance of Coastal Change Modeling

Coastal change modeling is essential for predicting and mitigating the impacts of coastal erosion and damage. The One Line Model method is a widely used approach for modeling coastal changes, taking into account the interaction between waves, flow, and sedimentation. This method provides a comprehensive understanding of coastal dynamics, enabling researchers and coastal managers to develop effective strategies for coastal protection and management.

Wave Forecasting and Analysis

Wave forecasting is carried out using the Jonswap (Joint North Sea Wave Project) method and wind data taken for one year from the Sampali Deli Serdang BMKG station. The analysis reveals that the dominant waves on Mirror beach come from 350 °, with a wave height reaching 0.7 meters and a wave period of 7.274 seconds. The refraction coefficient calculated is 0.9934 and the shoaling coefficient of 0.71613. The calculation results show that the height of the break up at a depth of 1 meter is 0.49798 meters, and sediment transport that occurs along the coast reaches 36,37872 m³/day.

Coastline Change Model Development

The coastline change model is then developed using MATLAB software. After the simulation is carried out until t = 8760 seconds, a change in the coordinates of the coordinates of the coastline from the initial 496797.8; 496704.5; 496630.6; up to the final coordinates of 499250; 499250; 499310; 499370. This shows a significant shift in coastline and needs to be addressed so that the adverse effects on the environment and the economy of the community can be minimized.

Additional Analysis and Explanation

Changes in the coastline on Mermin Beach not only affect the ecosystem, but also on the economic and social activities of the surrounding community. Coastal decline can reduce the area that can be accessed for tourism activities, affect the fisheries sector, and threaten settlements that are close to the coastline. Therefore, it is very important to carry out periodic monitoring and analysis of changes that occur.

The Role of the One Line Model Method

The One Line Model method is an effective tool in predicting changes in coastlines, taking into account the interaction between waves, flow, and sedimentation. With a better understanding of coastal dynamics, mitigation steps such as the construction of protective structures, coastal ecosystem restoration, and better spatial planning can be implemented.

Conclusion and Future Research Directions

In conclusion, the One Line Model method is a valuable tool for predicting and mitigating the impacts of coastal erosion and damage. Further research is needed to dig deeper about other factors that can affect changes in coastlines, such as climate change and human activity. Planned and data-based coastal protection efforts will provide long-term benefits for the environment and local communities, so that Cermin beach can continue to be a valuable asset for this area.

Recommendations for Coastal Management

Based on the findings of this study, the following recommendations are made for coastal management:

Regular monitoring and analysis of coastal changes: Regular monitoring and analysis of coastal changes are essential for predicting and mitigating the impacts of coastal erosion and damage.
Implementation of the One Line Model method: The One Line Model method is an effective tool for predicting changes in coastlines, taking into account the interaction between waves, flow, and sedimentation.
Coastal ecosystem restoration: Coastal ecosystem restoration is essential for maintaining the balance of coastal ecosystems and mitigating the impacts of coastal erosion and damage.
Better spatial planning: Better spatial planning is essential for minimizing the impacts of coastal erosion and damage on the economy and social activities of the surrounding community.

Limitations of the Study

This study has several limitations, including:

Limited data availability: The study relies on limited data availability, which may not be representative of the entire coastal area.
Simplification of coastal dynamics: The study simplifies coastal dynamics, which may not accurately represent the complex interactions between waves, flow, and sedimentation.
Limited scope: The study has a limited scope, focusing on a specific coastal area and neglecting other factors that may affect coastal changes.

Future Research Directions

Future research directions include:

Investigating the impacts of climate change on coastal changes: Investigating the impacts of climate change on coastal changes is essential for predicting and mitigating the impacts of coastal erosion and damage.
Developing more accurate coastal change models: Developing more accurate coastal change models is essential for predicting and mitigating the impacts of coastal erosion and damage.
Investigating the effectiveness of coastal protection measures: Investigating the effectiveness of coastal protection measures is essential for developing effective strategies for coastal protection and management.
Coastal Change Model with the One Line Model Method: A Case Study of Pantai Cermin, Serdang Bedagai Regency, North Sumatra - Q&A

Q: What is the One Line Model method and how does it work?

A: The One Line Model method is a widely used approach for modeling coastal changes, taking into account the interaction between waves, flow, and sedimentation. It uses a simplified mathematical model to predict the changes in the coastline over time, based on the input of wave and wind data.

Q: What are the benefits of using the One Line Model method?

A: The One Line Model method provides a comprehensive understanding of coastal dynamics, enabling researchers and coastal managers to develop effective strategies for coastal protection and management. It also allows for the prediction of coastal changes, which can help to mitigate the impacts of coastal erosion and damage.

Q: What are the limitations of the One Line Model method?

A: The One Line Model method has several limitations, including the simplification of coastal dynamics, limited data availability, and limited scope. It also relies on the accuracy of the input data, which can be affected by various factors such as climate change and human activity.

Q: How can the One Line Model method be used in coastal management?

A: The One Line Model method can be used in coastal management to predict and mitigate the impacts of coastal erosion and damage. It can also be used to develop effective strategies for coastal protection and management, such as the construction of protective structures, coastal ecosystem restoration, and better spatial planning.

Q: What are the potential impacts of coastal erosion and damage on the environment and local communities?

A: Coastal erosion and damage can have significant impacts on the environment and local communities, including the loss of habitat, reduced access to tourism and fishing areas, and increased risk of flooding and erosion.

Q: How can coastal erosion and damage be mitigated?

A: Coastal erosion and damage can be mitigated through the use of the One Line Model method, which can help to predict and prevent coastal changes. Other measures include the construction of protective structures, coastal ecosystem restoration, and better spatial planning.

Q: What are the future research directions for the One Line Model method?

A: Future research directions for the One Line Model method include investigating the impacts of climate change on coastal changes, developing more accurate coastal change models, and investigating the effectiveness of coastal protection measures.

Q: How can the One Line Model method be applied to other coastal areas?

A: The One Line Model method can be applied to other coastal areas by using similar input data and mathematical models. However, it is essential to consider the unique characteristics of each coastal area, such as the local geology, hydrology, and climate.

Q: What are the potential applications of the One Line Model method in other fields?

A: The One Line Model method has potential applications in other fields, such as oceanography, hydrology, and environmental science. It can be used to model and predict changes in other coastal systems, such as estuaries, deltas, and mangroves.

Q: How can the One Line Model method be used to support decision-making in coastal management?

A: The One Line Model method can be used to support decision-making in coastal management by providing a comprehensive understanding of coastal dynamics and predicting coastal changes. It can also be used to evaluate the effectiveness of different coastal protection measures and to develop effective strategies for coastal management.

Q: What are the potential challenges and limitations of using the One Line Model method in coastal management?

A: The potential challenges and limitations of using the One Line Model method in coastal management include the complexity of coastal dynamics, limited data availability, and limited scope. It also relies on the accuracy of the input data, which can be affected by various factors such as climate change and human activity.