Geotechnical Characteristics of Seafloor Sediments: Norton Sound, Alaska

by Emir J. Macari, Seafloor Engineers, Houston, TX, USA,
Stephen A. Ketcham, Seafloor Engineers, Houston, TX, USA,
Dobroslav Znidarcic, Seafloor Engineers, Houston, TX, USA,
Robert L. Schiffman, Seafloor Engineers, Houston, TX, USA,
Harold W. Olsen, Seafloor Engineers, Houston, TX, USA,
Hon-Yim Ko, Seafloor Engineers, Houston, TX, USA,



Document Type: Proceeding Paper

Part of: Civil Engineering in the Arctic Offshore

Abstract:

During the past few years the USGS has been conducting studies in the northern Bering Sea aimed at identifying geologic and environmental conditions that may be hazardous to offshore resource development activities. In 1978 an Alpine vibratory corer system was used to obtain near surface samples for studies concerning the importance of gas and storm wave loading as sources of bottom instability in Norton Sound. The cores taken in gas charged areas in Norton Sound were tested to obtain geotechnical data that reflect the geologic history of the material that govern their response to stresses imposed by civil engineering structures and the environment and to relate to data from in-situ measurements. The equipment and procedures followed for the experimental program and the data obtained are documented. The data includes soil classification, results of consolidation, permeability, shear modulus, and damping measurements.

Subject Headings: Soil modulus | Soil gas | Soil classification | Soil analysis | Permeability (soil) | Consolidated soils | Sediment | Alaska | United States | Bering Sea

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