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首页> 外文期刊>Proceedings of the International Conference on Coastal Engineering >SAND TRANSFER, BEACH CONTROL, AND INLET IMPROVEMENTS, FIRE ISLAND INLET TO JONES BEACH, NEW YORK.
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SAND TRANSFER, BEACH CONTROL, AND INLET IMPROVEMENTS, FIRE ISLAND INLET TO JONES BEACH, NEW YORK.

机译：沙转移，海滩控制和进水口改进，火岛进水口到纽约琼斯海滩。

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摘要

Long Island, New York (Figure 1) extends for about 120 miles in a general east-west direction off the southern portions of the States of New York and Connecticut, from which it is separated by Long Island Sound. The western end of the island contains the Counties of Brooklyn and Queens which are part of New York City. To the east are the Counties of Nassau and Suffolk. The surface geology of Long Island is mostly of glacial origin. That portion of the south shore of Long Island with which this paper is concerned (Figure 2) consists of outwash plains of sand and gravel fringed by barrier beaches from 600 feet to 3,500 feet in width. They rise to about 15 feet above mean sea level, and in their natural condition are more or less protected by sand dunes which may reach an elevation of from 25 feet to 30 feet. The sand along the foreshore is predominantly quartz, averaging about 0.4 mm. at mid-tide level, and becoming somewhat finer offshore. The foreshore slope of the beaches averages about 1 on 10 above the mean low water line and about 1 on 30 immediately offshore. Several hundred feet offshore the slope flattens to about 1 on 250.
机译：纽约长岛（图1）沿大体东西方向延伸约120英里，远离纽约州和康涅狄格州的南部，与长岛之声隔开。该岛的西端包含布鲁克林和皇后区，属于纽约市。东部是拿骚和萨福克郡。长岛的地表地质大多来自冰川。本文涉及的长岛南岸部分（图2）由宽阔的600英尺至3500英尺宽的屏障海滩构成的砂砾和砂砾的平原平原。它们上升到比平均海平面高约15英尺的高度，在自然条件下或多或少受到沙丘的保护，沙丘的高度可能达到25英尺至30英尺。沿海岸的沙子主要是石英，平均约0.4毫米。处于中潮时期，离岸变得更好一些。海滩的前岸坡度平均比平均低水位线高出约10比1，而紧邻海平面约有30比1。离岸数百英尺的山坡变平为250的大约1。

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