Arctic Coastal Dynamics Database, Version 2

An important outcome of Arctic Coastal Dynamics is the segmentation and characterization of the entire circum-Arctic coastline by regional experts which is presented in this data set. This data set contains data on coastal morphology, composition, dominant processes, ground ice, and environmental forcing parameters such as wind speed, storm counts, melt season, and wave energy. A listing of the variables included in the coastal classification can be found in Appendix A of the ACD II Science and Implementation Plan (2006). This information is available for over 800 segments, covering the coastline of all eight regional seas of the Arctic Ocean. The length of individual segments is variable (median length is 38 km), and depends on classification parameters and data availability. The segmentation format is scalable, allowing the adoption of future digital coastlines and the integration of additional data at higher spatial resolution. An assessment of the data quality for the more important quantitative variables has just been completed and the data will be publicly released on an Internet Map Server (IMS). The goal of the IMS will be to allow individual users to prepare their own maps displaying the region and variables of interest.

The Arctic Coastal Dynamics (ACD) program is a multidisciplinary, multinational program with the goal of understanding circum-Arctic coastal dynamics as a function of environmental forcing, coastal geology and cryology, and morphodynamic behavior. The ACD program was formed under the auspices of the International Permafrost Association (IPA), and is an official project of the International Arctic Sciences Committee (IASC).

The ACD program is currently focused on developing a circum-Arctic estimate of sediment and organic input from coastal erosion to inner shelf. Studies indicate that coastal erosion forms a major source of the sediment input and total organic carbon (TOC) input to the Arctic seas.

北极海岸动力学（Arctic Coastal Dynamics, ACD）的一项重要成果，是由区域专家对整个环北极海岸线开展分段与特征刻画，并将相关结果整合为本数据集。本数据集涵盖海岸地貌、组成、主要动力过程、地下冰，以及风速、风暴频次、融冰季、波浪能等环境强迫参数数据。海岸分类所包含的变量清单，可参见《ACD II科学与实施计划（2006）》的附录A。本数据集覆盖北冰洋八大边缘海的全部海岸线，共包含800余段岸线数据。各段岸线的长度存在差异（中位长度为38千米），具体长度取决于分类参数与数据可获得性。该分段格式具备可扩展性，可适配未来的数字化海岸线，并支持集成更高空间分辨率的额外数据。针对部分关键定量变量的数据质量评估已完成，相关数据将通过互联网地图服务器（Internet Map Server, IMS）公开发布，该平台的目标是允许用户自主绘制感兴趣区域与变量的专题地图。

北极海岸动力学（ACD）计划是一项多学科、跨国合作计划，旨在解析环北极海岸动力学与环境强迫、海岸地质学、冻土学及动力地貌行为的关联关系。本计划由国际冻土协会（International Permafrost Association, IPA）牵头发起，同时是国际北极科学委员会（International Arctic Sciences Committee, IASC）的官方项目。

当前ACD计划的研究重点是估算海岸侵蚀向陆架内区输入的沉积物与有机质总量。已有研究表明，海岸侵蚀是北冰洋海域沉积物输入与总有机碳（TOC）输入的主要来源。