Tidally generated sea-floor lineations in Bristol Bay, Alaska, USA
Geo-Marine Letters
By: M. S. Marlow, A. J. Stevenson, H. Chezar, and R.A. McConnaughey
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Abstract
Highly reflective linear features occur in water depths of 20-30 m in northern Bristol Bay (Alaska, USA) and are, in places, over 600 m in length. Their length-to-width ratio is over 100:1. The lineations are usually characterized by large transverse ripples with wavelengths of 1-2 m. The lineations trend about N60??E, and are spaced between 20 and 350 m. Main tidal directions near the lineations are N60??E (flood) and S45??W (ebb), which are parallel to subparallel to the lineations. They suggest that the lineations may be tidally generated. The lineations may be bright sonar reflections from a winnowed lag concentrate of coarse sand.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Tidally generated sea-floor lineations in Bristol Bay, Alaska, USA |
| Series title | Geo-Marine Letters |
| DOI | 10.1007/s003670050112 |
| Volume | 19 |
| Issue | 4 |
| Year Published | 1999 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Geo-Marine Letters |
| First page | 219 |
| Last page | 226 |
| Google Analytic Metrics | Metrics page |