. Manual of the natural history, geology and physics of Greenland and the neighbouring regions / prepared for the use of the Arctic expedition of 1875, under the direction of the Arctic Committee of the Royal Society and edited by T. Rupert Jones. Together with Instructions suggested by the Arctic Committee of the Royal Society for the use of the expedition / published by authority of the Lords Commissioners of the Admiralty [microform]. Natural history; Scientific expeditions; Sciences naturelles; Expéditions scientifiques. 662 TIDES AND Superposed on the semi-diurnal tides at Port
. Manual of the natural history, geology and physics of Greenland and the neighbouring regions / prepared for the use of the Arctic expedition of 1875, under the direction of the Arctic Committee of the Royal Society and edited by T. Rupert Jones. Together with Instructions suggested by the Arctic Committee of the Royal Society for the use of the expedition / published by authority of the Lords Commissioners of the Admiralty [microform]. Natural history; Scientific expeditions; Sciences naturelles; Expéditions scientifiques. 662 TIDES AND Superposed on the semi-diurnal tides at Port Foulke is the diurnal tide. The diurnal inequality in height of high water amounts to about two feet, and in the November observations is very regular. In discussing the observations in June 1861, the diurnal inequality in times of high water and of low water are somewhat irregular, but their periods agree with the computed inequality in time of low water. In November and December 1860 the day high tides were higher than the night high tides, whereas in June 1861 the night high tides were higher than the day high tides. The range of the half- monthly inequality in time amounts to Ih. 26m. At Van Rensse- laer it amounted to Ih. 52m., a very large value. General Character oj Port Foulke Tides. The general character of the half-monthly and diurnal in- equalities is very much the same as at Van Rensselaer Harbour; the establishment is half-an-hour less at Port Foulke. The aver- age range of the tide is about the same at the two places, and the diurnal inequality in the height of high water is greater than in the height of low water. Note.—Comparing the heights of the highest spring tides in Baffin's Bay, generally about 7^ feet, with the height in Van Rensselaer Harbour, 11 feet, it would appear possible that the tide at Van Rensselaer may result from both the southern and northern tides. The fact that the duration of the fall of the tide 18 less at Van Rensselaer than at Port
Size: 1377px × 1814px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, books, booksubjectnaturalhistory
