scholarly journals DESIGN OF DEEP DRAFT NAVIGATION CHANNEL FROM GULF OF MEXICO INTO MATAGORDA BAY, TEXAS

2011 ◽  
Vol 1 (8) ◽  
pp. 34
Author(s):  
E.A. Weiser ◽  
Jack Armstrong
Keyword(s):  
Gulf Of Mexico ◽  
River Discharge ◽  
Colorado River ◽  
Study Data ◽  
Beach Erosion ◽  
Galveston Bay ◽  
Project Report ◽  
Model Study ◽  
Navigation Channel ◽  
Tidal Hydraulics

It was in July 1956 when the senior writer of this paper was requested to prepare a program for investigations and studies required in connection with the proposed deep-draft channel from the Gulf of Mexico to Point Comfort. During 1938 to 19^0, the senior writer had attempted to analyze the available field and model study data which were then available on Galveston Bay in the hope of thus being able to reduce the shoaling in the various deep draft channels in Galveston Bay. In 19^0, the senior writer had been in charge of two field parties one of which measured the flow of water in the Colorado River and the Gulf Intracoastal Waterway near their crossing near Matagorda, Texas. A peak discharge of about 80,000 cubic feet per second was measured in the Colorado River at the Palacios Road bridge, about 15 miles upstream from its mouth during this period. At that time there were no locks nor gates in the Intracoastal Waterway adjacent to the Colorado River. It was found then that about one third of this peak river discharge flowed southwest through the Intracoastal Waterway. On the basis of the above experience and the information obtained from a review of the Matagorda Ship Channel, Texas, project report (l) and other literature, then, available (2) thru (5) a program was formulated in June 1958 and submitted to the Division Engineer in Dallas with the request that the Office of the Chief of Engineers, the Southwestern Division Engineer Office, the Beach Erosion Board and the Committee on Tidal Hydraulics review the program.

Coexisting sea-based and land-based sources of contamination by PAHs in the continental shelf sediments of Coatzacoalcos River discharge area (Gulf of Mexico)

Chemosphere ◽  
2016 ◽  
Vol 144 ◽  
pp. 591-598 ◽  
Author(s):  
Ana Carolina Ruiz-Fernández ◽  
Julián Mauricio Betancourt Portela ◽  
José Luis Sericano ◽  
Joan-Albert Sanchez-Cabeza ◽  
Luisa Fernanda Espinosa ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Continental Shelf ◽  
River Discharge ◽  
Discharge Area ◽  
Shelf Sediments ◽  
Sources Of Contamination

Sedimentological history of Bryant Canyon area, northwest Gulf of Mexico, during the last 135 kyr (Marine Isotope Stages 1–6): A proxy record of Mississippi River discharge

2007 ◽  
Vol 246 (1) ◽  
pp. 137-161 ◽  
Author(s):  
Efthymios K. Tripsanas ◽  
William R. Bryant ◽  
Niall C. Slowey ◽  
Arnold H. Bouma ◽  
Aristomenis P. Karageorgis ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Mississippi River ◽  
River Discharge ◽  
Proxy Record ◽  
History Of

The use of oxygen isotope variation in shells of estuarine mollusks as a quantitative record of seasonal and annual Colorado river discharge 1 1Associate editor: K. K. Falkner

2004 ◽  
Vol 68 (6) ◽  
pp. 1253-1263 ◽  
Author(s):  
David L. Dettman ◽  
Karl W. Flessa ◽  
Peter D. Roopnarine ◽  
Bernd R. Schöne ◽  
David H. Goodwin
Keyword(s):  
Oxygen Isotope ◽  
River Discharge ◽  
Colorado River ◽  
Isotope Variation

scholarly journals A model study of the response of hypoxia to upwelling-favorable wind on the northern Gulf of Mexico shelf

2014 ◽  
Vol 131 ◽  
pp. 63-73 ◽  
Author(s):  
Yang Feng ◽  
Katja Fennel ◽  
George A. Jackson ◽  
Steven F. DiMarco ◽  
Robert D. Hetland
Keyword(s):  
Gulf Of Mexico ◽  
Northern Gulf Of Mexico ◽  
Model Study

scholarly journals MOVABLE-BED MODEL STUDIES OF PERCHED BEACH CONCEPT

1972 ◽  
Vol 1 (13) ◽  
pp. 60
Author(s):  
C.B. Chatham
Keyword(s):  
Three Dimensional ◽  
Normal Wave ◽  
Beach Erosion ◽  
Model Studies ◽  
Model Study ◽  
Wide Range ◽  
Final Design ◽  
Storm Wave ◽  
Wave Conditions ◽  
Movable Bed

Hydraulic model studies were conducted to aid in ascertaining the technical feasibility and optimum design factors of the perched beach concept. Among these were two-dimensional, movable-bed studies to determine an estimate of the amount of sand which would be lost seaward over the submerged toe structure by normal and storm wave action, the optimum elevation of the submerged toe structure, and the length of a stone blanket required to reduce seaward migration of sand to a minimum. The model beach was subjected to test waves until equilibrium was reached for a wide range of wave conditions for both the existing beach and the perched beach. Test results indicate that (a) little or no beachfill material will be lost seaward of the toe structure for normal wave conditions but the larger storm waves may cause erosion of the perched beach, (b) the installation of a stone blanket shoreward of the toe structure will reduce the amount of beach erosion, (c) if the beach fill is extended a sufficient distance seaward, the toe structure serves no useful purpose, and (d) a three-dimensional movable-bed model study is feasible and is necessary to determine the final design features of a perched beach.

scholarly journals Fluctuation and diversity of Hydromedusae (Hydrozoa, Cnidaria) in a highly productive region of the Gulf of Mexico inferred from high frequency plankton sampling

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7848 ◽  
Author(s):  
Sarah Pruski ◽  
Maria Pia Miglietta
Keyword(s):  
Gulf Of Mexico ◽  
First Record ◽  
Multivariate Regression Analysis ◽  
Future Climate Change ◽  
Galveston Bay ◽  
Climate Change Scenarios ◽  
Efficient Tool ◽  
Molecular Barcoding ◽  
Seasonal Factors ◽  
Peak Abundance

Hydrozoa medusae undergo blooms and seasonal fluctuations; however the drivers of such fluctuations are unknown. To understand how medusa populations fluctuate in response to seasonal factors such as temperature, salinity, dissolved oxygen, and chlorophyll a, and to enhance our taxonomic knowledge of Hydrozoa in Galveston Bay (TX), we performed frequent plankton sampling from September 2015 to September 2016. We collected 1,321 medusae in 190 sampling days. Using molecular barcoding and morphological analyses we identified 25 species, of which 21 are a first record for Galveston Bay and eight for the Gulf of Mexico. Daily medusa abundance is non-linearly related to temperature, with peak abundance estimated with multivariate regression analysis at approximately 21C. The role that temperature plays in driving medusa abundance has implications for future climate change scenarios, given that temperature in the Gulf of Mexico is expected to rise 4 °C by the end of the century. We also show that the biodiversity of the Galveston Bay and the Gulf of Mexico is underestimated and that molecular barcoding is an important and efficient tool to identify large number of medusae. We conclude that dense plankton sampling is necessary to capture both diversity and abundance of planktonic medusae.

scholarly journals THE BEACH EROSION BOARD

2010 ◽  
Vol 1 (1) ◽  
pp. 12
Author(s):  
Dabney O. Elliott
Keyword(s):  
United States ◽  
Federal Government ◽  
The United States ◽  
Coastal Engineering ◽  
The State ◽  
Beach Erosion ◽  
Corps Of Engineers ◽  
Navigation Channel ◽  
Indian River ◽  
Local Agencies

The purpose of this paper is to describe the methods by which, and the extent to which the Federal Government participates with local agencies in the control of beach erosion. The Beach Erosion Board of the Corps of Engineers is the instrumentality through which this participation is affected. However, before describing this Board, it is necessary to sketch very briefly the background of the beach erosion problem as viewed from the national standpoint. The necessity for the control of beach erosion by one means or another has no doubt been recognized from the beginning of the practice of coastal engineering in the United States. The early technical records of the Corps of Engineers contain numerous references to the mutual effects which navigation structures and the adjacent shorelines exert upon each other. As an example, chosen at random, I may mention the construction in 1874 of twelve stone groins along the shore of the State of Connecticut between Welshs Point and Indian River, and of a stone jetty at the mouth of that river in the following year, to stabilize the shoreline and to prevent the movement of sand into the navigation channel of that river.

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