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 16
... run strongly , divers are unable to hold their ground on the bed of the sea . As to the effect of tidal currents on the movement of submerged sand - beds in tidal channels , and , as showing that this movement is one of oscillation and ...
... run strongly , divers are unable to hold their ground on the bed of the sea . As to the effect of tidal currents on the movement of submerged sand - beds in tidal channels , and , as showing that this movement is one of oscillation and ...
Página 30
... running up the beach does so with consider- able momentum , and the substance is impelled by the thick end of the wedge of water , on the retreat it is only affected by the thin edge of the wedge , and lacks the aid 30 THE SEA - COAST .
... running up the beach does so with consider- able momentum , and the substance is impelled by the thick end of the wedge of water , on the retreat it is only affected by the thin edge of the wedge , and lacks the aid 30 THE SEA - COAST .
Página 32
... running watercourse , and lost of their weight , while rounded stones did not lose more than 100 to 400 . The residue consisted of sand and fine alluvial matter and soluble salts , principally silicate of potash.1 4 10 Experiments made ...
... running watercourse , and lost of their weight , while rounded stones did not lose more than 100 to 400 . The residue consisted of sand and fine alluvial matter and soluble salts , principally silicate of potash.1 4 10 Experiments made ...
Página 36
... running up its face carrying with it the pebbles with which it comes in contact , and at the same time pushing upward those that lie above the point to which the water reaches . The pebbles in their movement are actuated by the momentum ...
... running up its face carrying with it the pebbles with which it comes in contact , and at the same time pushing upward those that lie above the point to which the water reaches . The pebbles in their movement are actuated by the momentum ...
Página 37
... running further up the slope , and partly by filling in the interstices between the pebbles of the bank . The retreating water finds its way back due to the action of gravity , and while it lacks the energy due to the volume and ...
... running further up the slope , and partly by filling in the interstices between the pebbles of the bank . The retreating water finds its way back due to the action of gravity , and while it lacks the energy due to the volume and ...
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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 acres alluvium angle bank of shingle basalt beach in front beach material Blackpool boulder clay boulders Bridlington Burton Bradstock carried chalk chalk cliffs channel chert clay coast coast-line composed concrete considerable constructed 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 inches in diameter inland 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 beach 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
Pasajes populares
Página 352 - The Drainage of Fens and Low Lands by Gravitation and Steam Power. By WH Wheeler. 8 plates, 175 pp., 8vo. (1888.) 12s.
Página 286 - Coffin, is an area about three-quarters of a mile long and a quarter of a mile wide, known as "Swampoodle...
Página 239 - They sat them down upon the yellow sand, Between the sun and moon upon the shore; And sweet it was to dream of Fatherland, Of child, and wife and slave; but evermore Most weary seem'd the sea, weary the oar, Weary the wandering fields of barren foam. Then some one said, "We will return no more...
Página 16 - When there is considerable wave motion on the surface of the sea, at a depth at which divers are able to work the water is found to be motionless.
Página 63 - ... very light clayey matter contained in river silt under favourable conditions, there are no grounds for regarding it as exercising the very preponderating influence on the formation of deltas attributed to it by geologists.
Página 152 - Chisil is such, that as often as the wind bloweth strene, at south-est, so often the se betith it, and losith the bank, and breaketh it thorough it. So that if this might continually blow there, this bank should sone be beten away, and the se fully enter, and devide Portland making it an isle, as surely in tymes past it hath beene, as far as I can by any conjecture gather.
Página vii - Engineer in 1899, and is reprinted here with the permission of the editor of that...
Página 280 - Hastings the formations are as much as 200 feet higher on the north than on the south side of the river, whereas at Nininger, which is three miles to the northwest, they are higher south of the river.
Página 11 - Fall, as the crest of some slow-arching wave, Heard in dead night along that table shore, Drops flat, and after the great waters break Whitening for half a league, and thin themselves, Far over sands marbled with moon and cloud, From less and less to nothing...
Página 100 - The wall is 3J/2 miles long, 16 feet wide at the base and 5 feet at the top, which is 17 feet above low tide. The base is protected by granite blocks, extending out 27 feet into the Gulf. The concrete wall is reinforced by steel rods 9 feet long, set obliquely. In the construction of this sea wall, 150,000 tons of concrete, containing over 140,000 barrels of cement, were used...