BEACH CHANGES AT LONG BEACH ISLAND, NEW JERSEY, 1962-1973 PDF Download
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Author: MARTIN C. MILLER
Publisher:
ISBN:
Category :
Languages : en
Pages : 289
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Book Description
Author: MARTIN C. MILLER
Publisher:
ISBN:
Category :
Languages : en
Pages : 289
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Book Description
Author: Martin C. Miller
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 296
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Book Description
Beach profile line data collected from 32 profile sites along Long Beach Island, New Jersey. A total of 2,158 profile line surveys were examined, using empirical eigenfunction analysis and other measures of beach variability. Most profile lines have shown an accretionary trend since 1962 with rates between 2.3 and 0.24 meter per year in spite of erosion estimates due to sea level rise on the order of 0.68 meter per year. A great deal of variability in profile line change takes place along the beach, increasing from north to south, due to the location of profile lines relative to structures and offshore linear shoals. Detailed closely spaced profile lines taken over a year in a groin field near the north end of the island indicate littoral transport directions shift from north to south. Evidence of a littoral transport node near the north end of the groin field has been found. Net transport of the node is toward the south, but the rate could not be established due to lack of adequate wave data. Profile line variability within groin cells shows that single profile lines are not sufficient to determine the net change within a cell. The design of future beach monitoring studies should consider coastal structures, offshore bathymetry, the method of analysis, and the scales of processes under study. A coastal storm in November 1968 moved the MSL back as much as 22 meters; however, the beach recovered without artificial measures. The offshore bathymetry shows a series of shoreface-connected linear shoals at several locations along the island. Limited data show that these have remained stable and that most beach variability takes place in water shallower than 3 meters.
Author: Martin C. Miller
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 340
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Author:
Publisher:
ISBN:
Category : Coastal engineering
Languages : en
Pages : 262
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Author: Coastal Engineering Research Center (U.S.)
Publisher:
ISBN:
Category : Coasts
Languages : en
Pages : 442
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Author: Waterways Experiment Station (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 406
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Book Description
Author: Robert W. Morton
Publisher:
ISBN:
Category : Beach erosion
Languages : en
Pages : 76
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Beach profile data were collected at profile lines on Misquamicut Beach between November 1962 and June 1973. The data were examined for temporal and spatial patterns and variability along the beach face, as well as to identify and assess the forces which influence beach behavior. Misquamicut represents a typical barrier beach. It is sheltered from all directions except the south and southeast with wave climate modified by Fisher's Island, Long Island, and Block Island. Nearshore bathymetry and a submarine trough in Block Island Sound also modify the wave pattern and intensity. The focusing of energy varies depending on wave direction, but is generally most intense in the center of the beach. Regression analyses on above mean sea level volume versus time indicate a net accretional trend on the beach. There appears to be a seasonal pattern to erosion/accretion cycles on Misquamicut Beach. In general, erosion is accelerated from late autumn to early spring, principally as a result of winter storm events, while accretion occurs from late spring to early fall. However, nonseasonal storm events frequently interrupt and obscure this pattern. The beach responds in a similar manner to most storms regardless of the direction of the storm track. The average above mean sea level volume changes attributable to storms range from 5 to 10 cubic meters per meter of beach length, which is small in comparison to open ocean beaches (as those studied on Cape Cod) where changes were frequently on the order of 50 cubic meters per meter.
Author: Coastal Engineering Research Center (U.S.)
Publisher:
ISBN:
Category : Coasts
Languages : en
Pages : 644
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 490
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Book Description
Author: A. McLachlan
Publisher: Springer Science & Business Media
ISBN: 9401729387
Category : Science
Languages : en
Pages : 730
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Book Description
What sight is more beautiful than a high-energy beach facing lines of rolling white breakers? What battleground is more ferocious than where waves and sand meet? What environment could be more exciting to study than this sandy interface between sea and land? And yet how much do we know about sandy beaches? Open sandy beaches are amongst the most neglected fields of scientific study in the coastal environment. This situation exists despite their great extent along most temperate and tropical coastlines and their value as recreational areas and buffer zones against the sea. The traditional oceanographer does not venture into the surf zone while the terrestrial ecologist stops short at the high water mark. Only a few coastal engineers have grappled with the problem of sand and sediment movement as it influences their construction of harbours and pipelines. The marine biologist on the other hand has regarded estuaries, coral reefs and rocky shores, obviously teeming with life, as more fruitful areas for study than the apparently poor animal life on sandy beaches. Sandy beaches have therefore tended to become a scientific no man's land. Over the last decade this situation has begun to improve. Recent work on high-energy beaches has revealed that they may in fact be rich and productive and fertile areas for study. It has even been suggested that beaches and their adjacent surf zones may constitute viable marine ecosystems.
