Elevation and permafrost active layer observations near two creeks in the foothills of the Brooks Range, Alaska, May 2017

• Main Author: Ronald Daanen
• Format: Dataset
• Language: unknown
• Published: Arctic Data Center 2017
• Subjects: Elevation Point; Northern Foothills; Brooks Range; permafrost; Alaska
• Online Access: https://doi.org/10.18739/A2H708100

This elevation and active layer dataset was developed in conjunction with 4 other datasets linking eco-hydrological processes in two creeks in the northern foothills of the Brooks Range. This dataset describes the elevations in 6 transects perpendicular to the creek. The transects are split in two distinct regions; an area where the creek is gaining water and an area where the creek is losing water to groundwater. Each region was characterized by three transects. To measure elevation transects we used a Leica Differential Global Position System (DGPS) with an accuracy of approximately 5 centimeters. An elevation point was measured every 10 meters along a line across the creek. At each point the active layer was probed and noted if the probe hit a rock. The active layer probe is a simple metal rod that is pushed into the ground. The distinction between rock and frozen soil is made based on the sound and vibration of the probe.