Preliminary interpretation of seismic profiles in the Prudhoe Bay area, Beaufort Sea, Alaska

1972 ◽  
Author(s):  
Erk Reimnitz ◽  
Stephen C. Wolf ◽  
Craig A. Rodeick
1981 ◽  
Vol 103 (3) ◽  
pp. 208-211
Author(s):  
R. E. Potter ◽  
R. D. Goff

The planning, design and construction of two offshore exploratory drilling islands, constructed in the Alaskan Beaufort Sea during the summer of 1980, is described. Emphasis is given to areas of the work that are either unique to the Alaskan Beaufort Sea or involve modifications to the artificial island technology developed in the Canadian Beaufort Sea. The construction of the islands using a land gravel source, transport and handling of the gravel by highly efficient equipment, and placement of the gravel using the limited marine equipment available at Prudhoe Bay is described. The development of an economical slope protection system, with a design life of 3 yr, in Arctic environment and the monitoring and maintenance program planned to minimize the propagation of anticipated damage and maximize the effectiveness of the slope protection system is described, and knowledge gained to date is also included.


ARCTIC ◽  
2014 ◽  
Vol 67 (2) ◽  
pp. 196 ◽  
Author(s):  
Alice A. Stickney ◽  
Tim Obritschkewitsch ◽  
Robert M. Burgess
Keyword(s):  
Bay Area ◽  

1977 ◽  
Vol 14 (1) ◽  
pp. 117-127 ◽  
Author(s):  
W. J. Scott ◽  
J. A. Hunter

This paper reports the results of some recent geophysical experiments carried out in the Arctic with a variety of methods. In the Beaufort Sea, seismic refraction profiles obtained with both source and receivers on the seabottom indicate the presence of discontinuous near-bottom high-velocity (4200 m/s) material interpreted to be presently aggrading permafrost. Spring-time resistivity soundings taken through the ice in Kugmallit Bay, Beaufort Sea, show the top of permafrost at about 50 m below the bottom. Even for 5-km spreads, the base of permafrost was not observed.Off the southeast coast of Melville Island, refraction seismic profiles shot on the seabottom and resistivity soundings made through summer ice yielded data which correlate with known sub-bottom geology, but which gave no clear indication of either presence or absence of permafrost.Seismic and resistivity measurements made at a number of control sites in the Arctic Islands yielded typical velocities of 3500 m/s and resistivities of 1 × 106 ohm-m for ice-saturated sands. Some correlation was observed between seismic velocity and moisture contents in the range from 10% to 40%.Seismic and resistivity results in IOL Lake at the Involuted Hill test site, Tuktoyaktuk Peninsula, suggest the absence of permafrost under some parts of the lake bottom. On the hill itself, seismic up-hole shooting and VLF resistivity profiling give interpretations of ice distribution which correlate well with drill control. Gamma-gamma logs taken in some of the drill holes correlate well with ice content logged during drilling.


1984 ◽  
Vol 106 (3) ◽  
pp. 344-348 ◽  
Author(s):  
M. S. Nixon ◽  
G. M. Pharr

Gravel of the Prudhoe Bay area of Alaska used in the construction of artificial islands has been examined in constant load creep experiments to determine the effects of temperature, stress, and salinity on its creep behavior in unconfined compression. Over the range of conditions studied, it is found that the creep behavior is strongly dependent on each of these variables. In addition, the ice content of the specimen, itself a strong function of temperature and salinity, is found to be an important strength-determining parameter.


1994 ◽  
Vol 51 (4) ◽  
pp. 890-899 ◽  
Author(s):  
Robert G. Fechhelm ◽  
James D. Bryan ◽  
William B. Griffiths ◽  
William J. Wilson ◽  
Benny J. Gallaway

A one-dimensional advection model was used to simulate the movement of young (< 180 mm) anadromous least cisco (Coregonus sardinella) along the Beaufort Sea coast between the Colville River and Prudhoe Bay, Alaska. Two versions of the model simulated eastward movement during the month of July as the sum of wind-induced transport and constant dispersion. Model results were compared with fyke-net catch data collected from 1981 to 1992. Of the 12 years examined, the models correctly simulated no major arrival of fish in 1983, 1985, 1986, 1987, and 1992, simulated the exact day of arrival in 1981, 1989, and 1991, and were in error by 1 d in 1988. Approximately 71% of the error between simulated and observed arrival dates was associated with three specific years: 1982, 1984, and 1990. The model suggests that wind-governed circulation may reasonably account for the presence of young Colville River least cisco in the Prudhoe Bay area. Results are discussed in terms of their relevance for assessing the effects of Arctic oil development on regional fishery resources.


1984 ◽  
Vol 16 (3-4) ◽  
pp. 387-397
Author(s):  
J M Colonell ◽  
G A Robilliard

The Prudhoe Bay Causeway is a gravel-fill structure that extends 4 km into the Beaufort Sea at Prudhoe Bay, Alaska. Concern over the impact of this structure on the marine Arctic environment prompted regulatory agencies to require owners of the causeway to sponsor a multidisciplinary monitoring program that encompasses the physical and biological realms of possible impact. This paper describes how such concerns are being addressed and also includes results of the initial studies of possible environmental impact of the causeway.


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