Temporal and spatial character of newly formed ice gouges in eastern Harrison Bay, Alaska, 1977-1982

Rearic, Douglas M.

doi:10.3133/ofr86391

Cited by 3 publications

(4 citation statements)

References 16 publications

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“…In contrast, an average of eight to nine new gouges/year/km was observed in Harrison Bay where Mukluk Island is located (6).…”

Section: Introductionmentioning

confidence: 66%

“…Harrison Bay shows no change in slope along the survey testlines ( 6 ) where the overconsolidated silty clays crop out adjacent to or on the testlines. Rather, bottom depth increases at a uniform rate with distance from shore.…”

Section: Effect Of Ice Gouges On Mukluk Islandmentioning

confidence: 97%

“…Rearic (6) calculated that the seafloor disruption rate near Mukluk Island equals 7,000 m3/km2/year, so we estimate the rate on a small -7.5 m shoal crest to equal at least 42,000 m3/km2/year.…”

Section: Sediment Disruption Rates On Shoalsmentioning

confidence: 98%

“…This study notes that some of the clays are so hard that vibracorers failed to penetrate them. The overconsolidated clays in Harrison Bay are located in the area in which many ice gouges have been observed during a five-year study ( 6 ) . This set of studies indicates that overconsolidated sediments, perhaps similar to some reworked materials in Mukluk Island, are gouged by ice.…”

Section: Effect Of Ice Gouges On Mukluk Islandmentioning

confidence: 99%

See 3 more Smart Citations

Estimated ice-gouge rates on a manmamde shoal in the Beaufort Sea

Newbury¹,

Adams²

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings

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In 1987, slope-protection fabric was removed from the top of an artificial gravel island in Harrison Bay, southwestern Beaufort Sea.As a result, currents began to erode the island's top. After it is eroded to a subsurface shoal, ice keels will slowly gouge and disrupt the remaining shoal. This paper analyzes the ice-gouge process and estimates the rate of sediment disruption by gouges. The rate is derived from existing information on gouges in the surrounding seafloor in Harrison Bay and for a time when the shoal is at half of the water depth (-7.5 m).It is estimated that ice keels will typically disrupt 1 vertical meter of the whole surface of the shoal within a period of about 2 decades.

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“…In contrast, an average of eight to nine new gouges/year/km was observed in Harrison Bay where Mukluk Island is located (6).…”

Section: Introductionmentioning

confidence: 66%

Section: Effect Of Ice Gouges On Mukluk Islandmentioning

confidence: 97%

Section: Sediment Disruption Rates On Shoalsmentioning

confidence: 98%

Section: Effect Of Ice Gouges On Mukluk Islandmentioning

confidence: 99%

See 2 more Smart Citations

Estimated ice-gouge rates on a manmamde shoal in the Beaufort Sea

Newbury¹,

Adams²

OCEANS '88. 'A Partnership of Marine Interests'. Proceedings

View full text Add to dashboard Cite

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Design Considerations for Coastal Projects in Cold Regions

Leidersdorf¹,

Gadd²,

Vaudrey³

1997

Coastal Engineering 1996

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Snow and ice

Weeks¹,

Brown²

1991

The Heritage of Engineering Geology; The First Hundred Years

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Glaciology, the study of snow and ice, encapsulates many aspects of the more conventional world of geology, including the study of igneous (lake, river, and sea ice), sedimentary (snow packs), and metamorphic (glaciers, ice sheets, and shelves) ice masses. However, glaciology avoids some of geology’s inherent problems because snow and ice bodies always occur on or near the surface of the earth and are, geologically speaking, quite thin: snow, lake, river, and sea ice are less than a few tens of meters; ice shelves and glaciers are less than a few hundred meters; and ice sheets are less than 4,000 m. Consequently, their investigation by either direct sampling (coring) or indirect geophysical methods is comparatively straightforward. They are also basically mono-mineralic; ice 1(h) and gas, plus in the case of sea ice, a liquid phase with minor amounts of a few simple solid salts. This is clearly a simplification when one considers the mineralogical complexities of most rock masses. Furthermore, color presents few problems, basic white on white. In considering the differences between the behavior of natural ice masses and the more typical materials considered by engineering geologists, one must remember that ice on the Earth’s surface invariably exists at or near its melting temperature, as contrasted with surficial rock masses that occur at temperatures far below melting and are, relatively speaking, the real “frozen” bodies. From a research point of view, the “high” temperatures of natural ice masses are an advantage in that igneous, sedimentary, and metamorphic processes occur rapidly, resulting in changes that are invariably measurable in a few years and more commonly in a few hours or days; geologically near-lightning speeds.

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Temporal and spatial character of newly formed ice gouges in eastern Harrison Bay, Alaska, 1977-1982

Abstract: OPEN-FILE REPORT 86-391 Thi* report (mop) i* preliminary and ha* not been reviewed for conformity with U.S.Geological Survey editorial standard* (and stratigraphic nomenclature).

Cited by 3 publications

References 16 publications

Estimated ice-gouge rates on a manmamde shoal in the Beaufort Sea

Estimated ice-gouge rates on a manmamde shoal in the Beaufort Sea

Design Considerations for Coastal Projects in Cold Regions

Snow and ice

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