The Sea-coast: (1) Destruction (2) Littoral Drift (3) ProtectionLongmans, Green, and Company, 1902 - 361 páginas This title deals with the effects of erosion and littoral drift on the English and continental coast-lines bordering the North Sea, and outlines protective measures including sea-walls and groynes. |
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Página 9
... lower portion , or the trough , moving downwards and backwards . The maximum horizontal motion takes place at the top of the crest and bottom of the trough , and is at zero at the centre of the undulation , where the motion is only ...
... lower portion , or the trough , moving downwards and backwards . The maximum horizontal motion takes place at the top of the crest and bottom of the trough , and is at zero at the centre of the undulation , where the motion is only ...
Página 11
... lower molecules of the water is changed into a horizontal one , independent of the undulatory movement of the upper part of the wave ; and that where the bed of the sea rises abruptly this horizontal or translatory movement accumulates ...
... lower molecules of the water is changed into a horizontal one , independent of the undulatory movement of the upper part of the wave ; and that where the bed of the sea rises abruptly this horizontal or translatory movement accumulates ...
Página 19
... lower result than that shown by the above calculation . With waves 10 feet high , the mean pressure recorded was 1:36 ton per square foot , or about one - third of that given . Experiments carried out with a dynamometer by Mr. Frank ...
... lower result than that shown by the above calculation . With waves 10 feet high , the mean pressure recorded was 1:36 ton per square foot , or about one - third of that given . Experiments carried out with a dynamometer by Mr. Frank ...
Página 36
... lower part of the wave striking the bank , curling round and cutting out a hollow in its face . Two such hollows will almost invariably be found in all shingle banks , one at the level of high , and the other at that of ordinary ...
... lower part of the wave striking the bank , curling round and cutting out a hollow in its face . Two such hollows will almost invariably be found in all shingle banks , one at the level of high , and the other at that of ordinary ...
Página 37
... lower part of the wave curls round and cuts out the hollow already described . A great part of the water soaks in amongst the interstices of the pebbles , and drains gradually down to the beach , so that the quantity of water in the ...
... lower part of the wave curls round and cuts out the hollow already described . A great part of the water soaks in amongst the interstices of the pebbles , and drains gradually down to the beach , so that the quantity of water in the ...
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The Sea-coast: 1. Destruction, 2. Littoral Drift, 3. Protection William Henry Wheeler Vista completa - 1902 |
Términos y frases comunes
12 feet 20 feet alluvium angle bank of shingle basalt beach in front beach material Blackpool boulder clay boulders Bridlington carried chalk chalk cliffs channel chert clay coast coast-line composed concrete considerable constructed Crown 8vo denudation deposited depth derived direction distance dunes east effect entrance erected erosion estuary extends face feet high Felixstowe flints flood tide foot gravel groynes harbour headland heavy gales height high tides high water Humber Illustrations inches in diameter island jetty Kilnsea land length limestone littoral drift London Clay low groynes low water marshes mile wide Morecambe Bay on-shore gales pebbles pier piles placed planking promenade protection quantity quartzite rise river rocks sand and shingle sand-hills sandstone sandy sea-wall seaward shingle and sand shingle-bank shore slope spit spring tides Spurn Point stones surface tidal timber varying wall washed waves breaking width wind Withernsea yards wide
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