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This dataset comprises the geotechnical data from a series of surveys conducted in Harrison Bay, Alaska in July/August of 2021 and 2021. The contribution of this specific dataset to the overall project goals was connecting geotechnical sediment properties to erodibility parameters in an Arctic coastal environment. During the 2021 survey, geotechnical sediment properties from a portable-free fall penetrometer (PFFP) were related to physical sampling to develop a regional sediment classification scheme, and the data collected during the 2022 survey aimed to connect the results from the previous year to laboratory-based erodibility parameters from the Jet Erosion Test (JET), which was conducted on gravity core samples taken from the site. The attached repository contains both raw and processed data, and the specifics of the file structure can be found in the readMe.txt file. 

Phipps Peninsula is a sandy peninsula located near the town of Yakutat, Alaska. In the summer of 2018, a field study was conducted in three areas of the peninsula. All three locations feature complex sediment remobilization processes shaping the local geomorphology. Here, variations in geotechnical properties at the three test sites are investigated. For this purpose, a portable free fall penetrometer (PFFP) was deployed along several transects at the three sites, totaling approximately 750 deployments throughout the course of the study. Since field studies using PFFP on sub-aerial and intertidal beach areas are limited, and results are highly variable, novel methods were implemented for the analysis of the PFFP data. This study represents a first step towards the use of PFFP data to characterize geotechnical properties on sub-aerial and intertidal beaches. Temporal differences in strength are discussed in the context of local physical processes, and spatial variability was related to differences in morphology and hydrodynamics.