Impact of near-bottom currents on dredged material mounds near Mobile Bay

by Scott L. Douglass

Publisher: U.S. Army Engineer Waterways Experiment Station in [Vicksburg, Miss

Written in English
Published: Pages: 39 Downloads: 323
Share This


  • Spoil banks -- Environmental aspects,
  • Dredging spoil -- Environmental aspects,
  • Ocean circulation -- Statistics,
  • Sediment transport
  • Edition Notes

    Statementby Scott L. Douglass, Donald T. Resio, Edward B. Hands ; prepared for U.S. Army Corps of Engineers.
    SeriesTechnical report -- DRP-95-6., Technical report (U.S. Army Engineer Waterways Experiment Station) -- DRP-95-6.
    ContributionsResio, Donald T., Hands, Edward B., United States. Army. Corps of Engineers., U.S. Army Engineer Waterways Experiment Station., Dredging Research Program (U.S.)
    The Physical Object
    Paginationxi, 39 p. :
    Number of Pages39
    ID Numbers
    Open LibraryOL17601111M

(up to 84%, Stat the near-bottom layer) and coccolithophorids (up to 50%, Station 1, depth of 30 m). Maximum phytoplankton biomass was, unsurprisingly, recorded in the well–lit surface layer (Ref. ) and generally, the biomass of near bottom samples at all stations was. In areas of the banks and, sometimes, in mid-channel. low tide range and small tidal prism, tidal currents may not be able to maintain the inlet, and storm breaches tend (c) A bay-head delta is usually not present in the to close during fair weather, forming enclosed coastal river-dominated portion of tidally dominated estuaries. ponds. Another key point in the measured data is the rapid increase of SSC near the bed. In this near bottom layer, high concentrated mud layer with the bulk density of around 1, kg/m 3 appears, according to an in-situ density measurement (Fig.3 (b)). Universitätsbibliographie der Universität Hamburg bis Juni.

British Columbia A Natural History of Its Origins Ecology and код для вставки. Tetra Tech, Inc. was contracted to conduct a detailed bathymetric survey and to carry out sediment sampling and eelgrass surveys. The surveys showed that dredging was required. The dredged material was used as fill in the Port of Long Beach, saving the cost of upland disposal. %0 Book Section %A Antoine, John W. %A Martin, Ray G., Jr. %A Pyle, T.G. Scour of chinook salmon redds on suction dredge tailings. Treesearch. Bret C. Harvey; Thomas E. Lisle. Abstract - We measured scour of the redds of chinook salmon Onco. These currents are supposed to carry with them sediment from the bottom and near-bottom, at least part of which is to be resuspended by horizontal currents feeding the rising vertical currents. EM 15 Mar 91 a. In theory, such devices should work by maintaining sediment in suspension until natural currents can flush it away.

The current meter was moored on an anchor rigg and positioned 3 m above bottom, at m depth, close to one of the largest cora! banks in the study area (Fig. 2). Two 24 hours intervals were measured March.. RESULTS Bottom currents in the study area Two 24 hour series gave information about the near-bottom currents and temperature.   White Sea - Russia. NASA Technical Reports Server (NTRS) At bottom center of this true-color Moderate Resolution . Meiobenthology The Microscopic Motile Fauna of Aquatic Sediments 2nd revised and extended edition with Figures, 20 Tables, and 41 Information Boxes Prof. Dr. Olav Giere Universität Hamburg Zoologisches Institut und Zoologisches Museum Martin-Luther-King-Platz 3 Hamburg Germany [email protected]. Dredged material used in beach nourishment projects must always be evaluated for content of contaminants based on local, state, and federal guidelines. In general, the dredged material should match the sediment of the eroding beach and have a low content of fine sediments, organic material, and pollutants.

Impact of near-bottom currents on dredged material mounds near Mobile Bay by Scott L. Douglass Download PDF EPUB FB2

Nearshore Dredged Spoil Mounds for Beach Erosion Prevention and Mitigation. Impact of Near-Bottom Currents on Dredged Material Mounds Near Mobile Bay. Article. Full-text available.

The action discussed in this supplement was the impact which could result from continued ocean disposal of dredged material at the existing EPA interim designated site south of Horn Island Pass, Mississippi, Included in this document was the final report on U.

Army Corps of Engineers, Mobile District Contract No. DACWC entitled. Thus, dredged material sediments are likely from deepwater disposal site sediments, and this difference increases the likelihood of adverse effects of disposal on deepwater benthos.

The average transportation cost of dredged material from Tampa Bay would be approximately $/yd3/mile beyond Site A. Draft Environmental Impact Statement for Designation of an Ocean Dredged Material Disposal Site off Humboldt Bay, California Prepared by: U.S.

Environmental Protection Agency Region IX 75 Hawthorne Street San Francisco, California Contact: Allan Ota In association with: Jones & Stokes Associates, Inc. Northup Way, Suite Bellevue, Washington.

An experimental disposal of dredged material was performed in June at two adjacent sites in Mecklenburg Bay (western Baltic Sea) to investigate the impacts on. Estuarine, Coastal and Shelf Science () 35, 36 The Bottom Boundary Layer of the Bay Stem Plains Environment of Lower Chesapeake Bay L.

Wright, J. Boon, J. Xu and S. Kim Virginia Institute of Marine Science, School of Marine Science, College of William and Mary, Gloucester Point, VirginiaU.S.A. Received 25 May and in revised form 3 Cited by: This banner text can have markup.

web; books; video; audio; software; images; Toggle navigation. Dredged material disposal at the other two sites, one near Smelt Bay, Cortes Island, and the other off McNaughton Point, Sechelt Peninsula, should result in minimal adverse environmental impact.

Available methodologies to identify dredged materials with contaminant levels that preclude their environmentally acceptable disposal at these. Ahlnas, K., T. Royer, and T. George.

Multiple dipole eddies in the Alaska coastal current detected with Landsat thematic mapper l of Geophysical Research – CrossRef Google ScholarCited by: Sediment transport is mainly driven by tidal currents, though wind-induced currents and waves may have a direct effect on sediment resuspension and bedform morphology.

Human activities are widespread and relate mainly to harbor infrastructure works, dredging and disposal of dredged material, marine aggregate extraction, and windmill farm. Notably, near-bottom flows over the slope are persistently weak.

Unfortunately, this book can't be printed from the OpenBook. If you need to print pages from this book, we recommend downloading it as a PDF. Visit to get more information about this book, to buy it in print, or to download it as a free PDF.

Scientists and technical staff within the USGS Coastal and Marine Geology Program study coastal and ocean resources from shorelines and estuaries to the continental shelf and deep sea, providing expertise, tools, products, and data that address and inform a broad array of resource challenges facing our Nation.

- 4 _ 2 - O O UJ -2 -4 -6 BEACH NOURISHMENT AND PROTECTION Seawall _~: -- 08/13/88 APR. OCT. NGVD Extra Volume Needed for Beach Areas Where Seawalls are in the Water l L 0 N"W 1 1 1 1 1 1 1 50 DISTANCE (m) FIGURE D-4 Captiva Island beach nourishment monitoring cross-section at R The beach will be created using material dredged from the approach channel and turning basin, as discussed in Section D.

This material will consist primarily of limestone rock that will be dredged using cutter head suction dredge. Charlotte Harbor National Estuary Program Oyster Habitat Restoration Plan. online version of the program book. Please click the following link to download and install: When you are finished installing, please return to this window and PRESS.

Full text of "Selected water resources abstracts" See other formats. The Union Sportsmen’s Alliance website is designed to provide valuable articles about hunting, fishing and conservation for members of AFL-CIO affiliated labor unions and all sportsmen and sportswomen who appreciate hunting and fishing and want to preserve our outdoor heritage for future generations.

Long-term benthic infaunal monitoring at a deep-ocean dredged material disposal site off Northern California Blake, J.A. / Maciolek, N.J. / Ota, A.Y. / Williams, I.P.,Deep-Sea Research Part II,56(19),p,Sep - Elsevier Ltd Fig. 1 Historical ocean disposal sites used by the US Navy relative to location of SF.

EM (Dredging and Dredged Material Disposal). ER (Environmental Resources). by releasing compressed air near the bottom, the devices induce currents in the water column rising from the bottom to the surface.

These currents are supposed to carry with them sediment from the bottom and near-bottom. nual economic impact of $ billion in visitor spending in the Florida Keys which results in a total sales impact of $ billion, $ million in income, and o jobs.

Leeworthy and Wiley () estimate an annual economic impact of $ million in resident spending in the Florida Keys, resulting in a total sales impact of.

page 1 modeling the circulation and water quality in charlotte harbor estuarine system, florida by kijinpark a dissertation presented to the graduate school of the university of florida in partial fulfillment of the requirements for the degree of doctor of university of florida the material was dumped on the land and cattle were contaminated after they grazed in grass growing out of the soil.

- waste from the rocky mountain national arsenal near denver has contaminated 30 square miles of underground water, damaged square miles of farmland and may have caused earthquakes.

"The book begins with a concise review of the relatively brief history of its subject, which began shortly after the dawning of plate-tectonic theory little more than 30 years ago. It then describes the nature and important consequences of fluid flow in the sub-seafloor, ending with a summary of how the oceans are affected by the surprisingly.

??` G ;0 ;@ @@@ @@@@?. @l g | u > t. ;P EN DB ;`?!0F^p. Davison K Fray c/O Hopkins ?s McClain Vq Pilkey ??q. current is less readily observed, except by near-bottom current meters on the eastern flank.

Here, currents are predicted to be strongest at the mid-slope at about – m (Fig. These bottom currents, with a strong semidiurnal to diurnal tidal 0 50 0 Depth (m) Transect length (km) m m.

On a larger scale, the near-bottom magnetic anomaly data show that basement magnetizations are not uniformly near zero, as had been inferred from analysis of the sea surface anomaly pattern.

We interpret this heterogeneity as reflecting primarily differences in the degree of hydrothermal alteration.

Natural-gas molecules surge through a pipeline under the Gulf from Mobile Bay to Tampa Bay in 59 hours. It's not hard to see how a mess in one part of the Gulf can arrive quickly in others.

At Padre Island National Seashore, near Corpus Christi, researchers have traced trash to offshore rigs, shrimp boats, recreational boaters and more-distant. Abdul-Razzaq, W., and M. Gautam, Discovery of magnetite in the exhausted material from a diesel engine, Appl.

Phys. Lett., 78 (14),Short-period geomagnetic excursion recorded in Pleistocene sediments of Baffin Bay and Davis Strait, Geology, 11,Impact of technology on geomagnetism and paleomagnetism, in. Evaluation of the sand extraction impact on the seabed and the water column at short time and space scale in an intensively dredged area of the Belgian part of the North Sea by using multibeam echosounder bathymetric, backscatter strength and water column data, in: Mees, J.

et al. (Ed.) Book of abstracts – VLIZ Marine Scientist Day.Assessment of goods and services, vulnerability, and conservation status of European seabed biotopes: a stepping stone towards ecosystem-based marine spatial management.The geomorphic/subsurface features are pinnacles (1 to 2 m high) and mounds (4 to 5 m high) on the seafloor and subsurface in the south and west, valleys (1 to 3 m) on the seafloor in the south and subsurface in the north and onlap of reflectors in the north.

They mark corals, seafloor incisions, and sediment influx.