Dataset of Annual Shoreline Positions of England and Wales (1999–2020)

This dataset contains annual shoreline positions for England and Wales covering the period from 1999 to 2020. The entire coastline has been divided into 276 Regions of Interest (ROIs). For each ROI, coastline positions are provided in both tabular and GeoJSON formats. Coastlines were extracted for each ROI, but validation was performed only for sandy beaches. The dataset includes coastlines for all ROIs, covering both sandy and other types of beaches. The dataset includes the following components: 1. ROI ClassificationA file containing the classification of each ROI as either a sandy beach or another type of coastline. 2. TransectsA directory containing all transects for each ROI, used in the coastline extraction process for tidal correction. These files are provided in GeoJSON format and can be directly imported into mapping platforms. 3. Coastline PositionA directory containing coastline position data in two formats: GeoJSON: Coastline positions for each ROI in GeoJSON format, ready for direct import into mapping platforms. Table: Coastline positions stored as latitude and longitude coordinates for each ROI. The data is presented in tabular form, with transects as columns and dates as rows. 4. CoastSat_code_with_modification.pyThis file contains the original CoastSat code, which has been modified to generate shoreline position outputs in the desired formats, including tabular coordinate data and GeoJSON files. 5. Tide_data_conversionThis file documents the procedure used to convert tide data from a geoid-based vertical reference to MSL. The article describing the data extraction is available as a preprint at:10.21203/rs.3.rs-7410724/v1本数据集包含1999年至2020年英格兰与威尔士的年度海岸线位置数据。数据集涵盖的全部海岸线被划分为276个感兴趣区域（Regions of Interest, ROI，复数ROIs）。针对每个ROI，均提供了表格与GeoJSON两种格式的海岸线位置数据。 所有ROI的海岸线均已完成提取，但仅针对沙滩开展了验证工作。本数据集覆盖全部276个ROI的海岸线数据，涵盖沙滩与其他类型海岸。数据集包含以下组成部分： 1. ROI分类文件：包含每个ROI的分类信息，标注其为沙滩或其他类型海岸。 2. 断面（Transects）数据目录：包含所有ROI的断面数据，用于海岸线提取流程中的潮汐校正。该类文件以GeoJSON格式存储，可直接导入地图平台。 3. 海岸线位置数据目录：包含两种格式的海岸线位置数据： - GeoJSON格式：各ROI的海岸线位置数据，可直接导入地图平台。 - 表格格式：以经纬度坐标存储的各ROI海岸线位置数据。该数据以表格形式呈现，以断面为列、日期为行。 4. CoastSat_code_with_modification.py：该文件包含经过修改的原始CoastSat代码，可按照需求生成符合指定格式的海岸线位置输出结果，包括表格坐标数据与GeoJSON文件。 5. 潮汐数据转换文档：该文件记录了将基于大地水准面的垂直基准潮汐数据转换为平均海平面（Mean Sea Level, MSL）的流程。 本数据集相关的数据提取研究论文以预印本形式发布于：10.21203/rs.3.rs-7410724/v1