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首页> 外文期刊>Ocean & coastal management >Analysis of shoreline changes and cliff retreat to support Marine Spatial Planning in Shabla Municipality, Northeast Bulgaria
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Analysis of shoreline changes and cliff retreat to support Marine Spatial Planning in Shabla Municipality, Northeast Bulgaria

机译：分析海岸线变化和悬崖撤退以支持保加利亚东北部Shabla市海洋空间规划

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Measuring historical shoreline change and cliff retreat is an essential aspect of understanding the long-term geomorphic evolution of any coastal system. These data are also critical for predicting future changes and incorporating that data into proper coastal management. In recent years, Marine Spatial Planning (MSP) has increasingly been recognized as an important tool in the sustainable management of marine space across Europe and worldwide, including also issues of coastal zone management and land sea interactions (Directive 2014/89/EU for MSP). This paper deals with investigation of the shoreline changes and cliff retreat along the 34 km section of the Black Sea coast at Shabla Municipality (Northeast Bulgaria). The study area has a low density of development and comprises large sand beaches, dunes and rapidly retreating loess cliffs. The present research was formulated under the European Union (EU) Directive for MSP in the Black Sea Basin (MARSPLAN-BS) Project. The goal was to provide reliable data and useful information in support of the development of a pilot marine spatial plan for Shabla Municipality. The study was focused on the analysis of shoreline movement (at sand beaches erosion/accretion) and cliff retreat (at rocky coasts) utilizing a Geographic Information System (GIS). Primary data sources include topographic maps in scale 1:5,000, tachometry survey and modern Very High Resolution (VHR) orthophoto images. Change rates were determined using the Digital Shoreline Analysis System (DSAS), an ArcGIS extension for calculating shoreline change (Version 4.3), and rate-of-change statistical method. Management of coastal erosion, hard engineering methods and lack of required setbacks were discussed. Results for rates of shoreline change and cliff retreat were verified with preliminary field measurement studies and cross-checked with existing hydrodynamics, geology and geomorphology of the coast of Shabla Municipality. (C) 2017 Elsevier Ltd. All rights reserved.
机译：测量历史海岸线变化和悬崖撤退是了解任何沿海系统的长期地貌演化的重要方面。这些数据对于预测未来的变化并将其整合到适当的沿海管理中也至关重要。近年来，海洋空间规划（MSP）在欧洲乃至全球范围内的海洋空间可持续管理中日益被认为是重要工具，包括海岸带管理和陆地海洋相互作用的问题（MSP的2014/89 / EU指令） ）。本文研究的是Shabla市（保加利亚东北部）黑海沿岸34公里处的海岸线变化和悬崖撤退。研究区域的发展密度低，包括大的沙滩，沙丘和迅速撤退的黄土悬崖。本研究是根据欧盟黑海盆地MSP指令（MARSPLAN-BS）制定的。目的是提供可靠的数据和有用的信息，以支持为Shabla市政府制定试点海洋空间计划。这项研究的重点是利用地理信息系统（GIS）分析海岸线运动（在沙滩侵蚀/堆积处）和悬崖撤退（在岩石海岸）。主要数据源包括比例为1：5,000的地形图，测速法调查和现代甚高分辨率（VHR）正射影像。使用数字海岸线分析系统（DSAS），用于计算海岸线变化的ArcGIS扩展（版本4.3）和变化率统计方法确定变化率。讨论了海岸侵蚀的管理，艰苦的工程方法和缺乏必要的挫折。通过初步的野外测量研究验证了海岸线变化和悬崖撤退速率的结果，并与Shabla市海岸的现有水动力，地质和地貌学进行了交叉核对。 （C）2017 Elsevier Ltd.保留所有权利。

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