scholarly journals THE EFFECT OF OBLIQUE SHOREFACE-CONNECTED RIDGES ON ALONGSHORE TRANSPORT AND SHORELINE CHANGE

2018 ◽  
pp. 65
Author(s):  
Kevin Haas ◽  
Tongtong Xu
Keyword(s):  
Continental Shelf ◽  
Long Island ◽  
Shoreline Change ◽  
Delmarva Peninsula ◽  
The North ◽  
Fire Island ◽  
Maximum Expression ◽  
Western Half ◽  
Inner Continental Shelf

Shoreface-connected ridges (SFCR) are series of ridges and troughs obliquely oriented towards the shore in the inner-continental shelf. They exist sporadically from Long Island to Florida on the North American Atlantic Shelf with maximum expression on the Delmarva peninsula (Swift et al., 1978), including the western half of Fire Island, NY. The long-term historic shoreline record of Fire Island (e.g., Allen and LaBash, 1997) shows persistent undulations in shoreline shape at an alongshore scale similar to the alongshore scale of the ridges. These ridges and troughs are spaced approximately every 2 to 3 km in the alongshore and occupy a total length about 14 km in the cross-shore direction with an average crest to trough height of 2 m.

scholarly journals ICHTHYOFAUNA IN THE INNER CONTINENTAL SHELF NEXT TO THE PARANAGUÁ ESTUARINE COMPLEX, SOUTHERN BRAZIL

2021 ◽  
Vol 46 (4) ◽  
pp. 1-13
Author(s):  
Cesar SANTOS ◽  
Roberto SCHWARZ JUNIOR ◽  
Helen Audrey PICHLER ◽  
Olímpio Rafael CARDOSO ◽  
Marcelo Renato LAMOUR ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Fish Assemblages ◽  
Fish Fauna ◽  
Temporal Variations ◽  
Otter Trawl ◽  
Rainfall Regime ◽  
Wet Season ◽  
Environmental Characteristics ◽  
The North ◽  
Inner Continental Shelf

The composition and structure of fish assemblages in the inner continental shelf of the Paraná State are affected by cold fronts and the rainfall regime. Data from fishing activities in this region, as well as the analysis of environmental characteristics, are the main tools available for understanding fish dynamics, under influence of increasing human activities. In order to better understand patterns and temporal variations in fish assemblages in the inner continental shelf of the Paraná State, a total of 24 double trawls were performed with an otter trawl between August 2000 and July 2001, in two sampling areas, the North area in front of the northern mouth of the Paranaguá Estuary Complex, and the South area, in front of the Leste beach. A total of 45,277 fish specimens belonging to 35 families and 97 species were caught. Sciaenidae was the most abundant family, with 37.1% of the total number of individuals caught, and with the highest richness (18 species). Statistical analyses evidenced significant differences in environmental characteristics and in fish fauna, and that both areas disturbances were observed in the fish assemblages during the dry and wet season, being more intense in the Southern area, disturbances that would be related to the shrimp fishing present in the two areas sampled in this study.

scholarly journals Distribution and Age Composition of Red Snapper across the Inner Continental Shelf of the North-Central Gulf of Mexico

2018 ◽  
Vol 147 (5) ◽  
pp. 791-805 ◽  
Author(s):  
Sean P. Powers ◽  
J. Marcus Drymon ◽  
Crystal L. Hightower ◽  
Trey Spearman ◽  
George S. Bosarge ◽  
...  
Keyword(s):  
Gulf Of Mexico ◽  
Continental Shelf ◽  
Red Snapper ◽  
Age Composition ◽  
North Central ◽  
The North ◽  
Inner Continental Shelf

scholarly journals Long-term Behavior of CO2 Stored on a Large Scale in the Utsira Formation, the North Sea, Norwegian Continental Shelf

2013 ◽  
Vol 37 ◽  
pp. 5240-5247
Author(s):  
V.T.H. Pham ◽  
E.K. Halland ◽  
I.M. Tappel ◽  
I.T. Gjeldvik ◽  
F. Riis ◽  
...  
Keyword(s):  
Continental Shelf ◽  
North Sea ◽  
Large Scale ◽  
The North ◽  
The North Sea ◽  
Long Term Behavior ◽  
Norwegian Continental Shelf

A modelling study of the mixing of 137 Cs in the seas of the European Continental Shelf

1984 ◽  
Vol 310 (1513) ◽  
pp. 407-436 ◽  
Keyword(s):  
Continental Shelf ◽  
Sea Level ◽  
Irish Sea ◽  
Residual Flow ◽  
The North ◽  
Shelf Seas ◽  
Modelling Studies ◽  
Flow Components ◽  
Turn Over

A two-dimensional numerical model is formulated to simulate long-term mixing in the coastal waters over the European Continental Shelf. By using both tidal and wind-driven components, the mean circulation over this region is computed and is shown to be in good agreement with earlier estimates from (i) modelling studies, (ii) observations of residual flow, and (iii) observations of mean sea level distribution. Long-term gradients of sea level in the adjacent oceanic region are found to be unimportant for shelf circulation. These residual flow components are used to develop a mixing model, observational data of the mixing of 137 Cs (released from Windscale over a 17 year period) are used to calibrate and evaluate the model. The model accurately simulates the transport routes of this material both spatially and temporally. This transport is shown to be dependent on both advection and dispersion. The model is used to determine various time constants for the shelf seas, namely: age, residence times and turn-over-times. Thus, the turn-over-time of the North Sea is calculated to be 530 d compared with a value of 328 d for the Irish Sea. The geographical distribution of turn-over-times differentiates regions of vigorous mixing from more stagnant regions and thereby indicates regions conducive to the formation of thermal fronts. The model also indicates that about one third of the material discharged from Windscale is lost to the ocean in the vicinity of the shelf edge to the north and west of Scotland.

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