DOGAMI SPECIAL PAPER SERIES
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Special Paper 54, Geologic Assessment of Potential Cable Landing Sites Along the Oregon Coast, by Reed J. Burgette, Eduardo F. Guerrero, Jonathan C. Allan, Fletcher E. O’Brien, Jason D. McClaughry, Lowell H. Anthony, Robert W. Hairston-Porter, and Jon Franczyk.
WHAT’S IN THIS REPORT?
This report analyzes the geology of the Oregon coastal zone including the Oregon Territorial Sea to assess the siting potential of landing sites for cables that carry information and/or power from offshore. We focus on subsea cables given current uses, but much of the information we have compiled will be relevant for other uses of the seafloor that may be covered by the Oregon Territorial Sea Plan, Part 4. We review the construction of cable landing infrastructure, particularly the cable landing sites where cables cross the shoreline through subsurface conduits commonly installed with the horizontal directional drilling (HDD) method. We review best practices and challenges in HDD construction, illustrated with examples of issues that occurred during construction of recent Oregon cable landing sites. Geologic hazards and processes that should be considered during siting and construction of cable landings are summarized. We present a summary of the geologic framework of the Oregon coastal zone that extends interpretive geologic mapping offshore across the Oregon Territorial Sea and synthesizes geologic units present within an equivalent distance onshore.
PUBLICATION DOWNLOADS
Plate 1: Detailed geology and other factors related to the suitability of potential cable landing sites in the Gold Beach area, southern Oregon
Plate 2: Detailed geology and other factors related to the suitability of potential cable landing sites in the Rockaway Beach area, northern Oregon
