Stability of giant sand waves in eastern Long Island Sound, U.S.A.
Marine Geology
By: M.S. Fenster, D. M. FitzGerald, W.F. Bohlen, R. S. Lewis, and C.T. Baldwin
Links
- The Publications Warehouse does not have links to digital versions of this publication at this time
- Download citation as: RIS | Dublin Core
Abstract
A combination of a highly accurate bathymetric surveying technique and in-situ submersible observations and measurements were used to assess the migrational trends and morphological changes of large sand waves (Ht ??? 17 m) in eastern Long Island Sound. Although residing in a high-energy tidal environment characterized by a net westward sediment flux, the large bedforms are relatively stable over the short term. Over a 7 month period, 55.1% of a total 2942 m of sand wave crestline lengths migrated less than the horizontal accuracy limits of navigation (2 m). Approximately 35% of the remaining sand wave crests migrated less than 4 m. Net migration of the sand wave crests in the study area was 0.2 m. In addition, the bulk form (center of area in profile view) or the base of the sand waves showed little, if any, movement. These data, in conjunction with flow data within the sand wave field, suggest that net migration rates are greater than the time span of this study and/or the sand waves move in response to large residual flows created by high-energy, aperiodic storm events. The latter scenerio suggests that day to day processes only serve to rework and modify the sand waves. ?? 1990.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Stability of giant sand waves in eastern Long Island Sound, U.S.A. |
| Series title | Marine Geology |
| Volume | 91 |
| Issue | 3 |
| Year Published | 1990 |
| Language | English |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Marine Geology |
| First page | 207 |
| Last page | 225 |
| Google Analytic Metrics | Metrics page |