印度东部大都市的海岸线变化

IF 2.1 4区 地球科学 Q3 IMAGING SCIENCE & PHOTOGRAPHIC TECHNOLOGY
Vijay K. Kannaujiya, Abhishek K. Rai, Sukanta Malakar
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引用次数: 0

摘要

印度沿海地区人口密度高,生态资源丰富。然而,它们也容易受到人类活动和自然灾害的影响,从而导致侵蚀和增生。作为沿海地区可持续管理的一部分,这些威胁已成为评估海岸线动态的优先考虑因素。这项研究表明,将遥感和地理信息系统结合起来进行长期海岸变化综合分析是有效的。分析表明,钦奈海岸的平均侵蚀速率为-0.2 至-2.5 米/年。钦奈海岸的某些地段也有增生现象,增生速率为 1 至 4.6 米/年。维沙卡帕特南海岸线的侵蚀和增生模式一致,侵蚀率为每年-0.1 至-6.8 米,增生率为每年 0.2 至 5 米。不过,普里海岸的大部分地区呈现出增生模式,增生值约为 0.1 至 3.22 米/年。由于这三个沿海城市在印度的经济和文化事业中发挥着重要作用,因此它们的海岸线波动引起了人们的极大关注。持续的气候变化和全球变暖导致全球海平面上升,这三个海岸所在的孟加拉湾热带气旋等极端事件的强度和频率也随之增加。由于海平面上升和热带气旋等自然现象以及各种人类活动,这些城市地区的海岸线可能会发生变化。这项研究可能有助于为维沙卡帕特南、普里、钦奈和其他具有类似物理属性的印度沿海地区制定合适的管理战略和法规。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Coastal Shoreline Change in Eastern Indian Metropolises

Coastal Shoreline Change in Eastern Indian Metropolises

The coastal regions of India have a high population density and are ecologically productive. However, they are also susceptible to both human activity and natural calamities, which can lead to erosion and accretion. As part of the sustainable management of coastal zones, these threats have taken precedence in evaluating shoreline dynamicity. This study demonstrated the effectiveness of integrating remote sensing and geographic information systems for comprehensive long-term coastal change analyses. The analysis reveals that the mean erosion rate along the Chennai coast ranges from −0.2 to −2.5 m/year. Accretion is also recorded along certain parts of the Chennai coast, with rates ranging from 1 to 4.6 m/year. The Vishakhapatnam shoreline has a consistent pattern of both erosion and accretion, with erosion rates ranging from −0.1 to −6.8 m/year and accretion from 0.2 to 5 m/year. However, most of the Puri coast exhibits an accretion pattern, with values ranging from approximately 0.1 to 3.22 m/year. The fluctuations in shorelines of these three metropolises are a matter of great concern, given that these coastal cities play a substantial part in India’s economic and cultural endeavors. The ongoing occurrence of climate change and global warming has led to an elevation in the worldwide sea level, along with a heightened intensity and frequency of extreme occurrences like tropical cyclones in the Bay of Bengal, where these three coasts are situated. The coastlines of these urban areas may experience alterations due to natural phenomena like rising sea levels and tropical cyclones, as well as a diverse array of human activity. This study may help to facilitate the formulation of suitable management strategies and regulations for the coastal areas of Vishakhapatnam, Puri, Chennai, and other Indian coastal places that have similar physical attributes.

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来源期刊
CiteScore
8.20
自引率
2.40%
发文量
38
期刊介绍: PFG is an international scholarly journal covering the progress and application of photogrammetric methods, remote sensing technology and the interconnected field of geoinformation science. It places special editorial emphasis on the communication of new methodologies in data acquisition and new approaches to optimized processing and interpretation of all types of data which were acquired by photogrammetric methods, remote sensing, image processing and the computer-aided interpretation of such data in general. The journal hence addresses both researchers and students of these disciplines at academic institutions and universities as well as the downstream users in both the private sector and public administration. Founded in 1926 under the former name Bildmessung und Luftbildwesen, PFG is worldwide the oldest journal on photogrammetry. It is the official journal of the German Society for Photogrammetry, Remote Sensing and Geoinformation (DGPF).
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