Permafrost active layer thaw depth transects: Anaktuvuk Pass and Selawik, Alaska

Data for 12 transects (50 – 400 m) sampled at 1 m intervals in and around the Inupiaq villages of Anaktuvuk Pass and Selawik, Alaska. Data include active layer thaw depth, water depth, vegetation, ground surface features, and anthropogenic disturbances. Thaw depth data were collected and analyzed in conjunction with local knowledge as part of an interdisciplinary study of the implications of thawing permafrost and climate change for the social-ecological systems of two communities whose ways of life rely on close interactions with their local environments. Anaktuvuk Pass is built on a thaw-stable substrate, while Selawik rests on fine-textured, ice rich soils vulnerable to subsidence when permafrost thaws.本数据集采集自阿拉斯加因纽皮雅特（Inupiaq）村落阿纳克图克山口（Anaktuvuk Pass）与塞拉维克（Selawik）及其周边区域，共设置12条长度为50至400米的样带，以1米为采样间隔开展野外数据采集。所获数据涵盖活动层冻融深度（active layer thaw depth）、水深、植被状况、地表特征以及人为扰动情况。冻融深度数据结合本土知识进行采集与分析，本研究为跨学科研究项目的一部分，旨在探究多年冻土退化与气候变化对两个社区社会-生态系统的影响；这两个社区的生活方式高度依赖与本土环境的紧密互动。阿纳克图克山口村落建于冻融稳定基底之上，而塞拉维克村落则坐落于细粒富冰土壤区域——此类土壤在多年冻土解冻时极易发生地面沉陷。