. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 45 160. 1650 1700 1750 1800 1850 1900 DECADE BEGINNING IN YEAR STATED r~i~i" 1950 1980 Figure 23. Reconstructed ten-year frequency of cyclones in the Atlantic, Caribbean and West Indian regions, 1650-1989. (From Walsh and Reading 1991). Rainfall magnitudes, together with seasonality, form a basic input in the geomorphic system. Fournier (1960) has demonstrated a fairly simple relationship between suspended sediment yield in drainage basins and a parameter p2/P, where p is the precipitation in mm of the mo
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 45 160. 1650 1700 1750 1800 1850 1900 DECADE BEGINNING IN YEAR STATED r~i~i" 1950 1980 Figure 23. Reconstructed ten-year frequency of cyclones in the Atlantic, Caribbean and West Indian regions, 1650-1989. (From Walsh and Reading 1991). Rainfall magnitudes, together with seasonality, form a basic input in the geomorphic system. Fournier (1960) has demonstrated a fairly simple relationship between suspended sediment yield in drainage basins and a parameter p2/P, where p is the precipitation in mm of the month with highest rainfall, and P is the mean annual rainfall in mm. Fournier showed the relationship between 8 and 80 for values of p2/P and from less than 100 to over 1500 tonnes/km2/year for suspended sediment yield (cf. Stoddart 1969, 183). Table 12 shows how p2/P varies between each of the identified rainfall epochs at Viti Levu and Samoa in the Pacific, Minicoy and Mahe in the Indian Ocean, and Dominica in the West Indies. The limits of variation at these stations are respectively at Suva, at Apia, at Minicoy, at Mahe, and at Dominica. At Apia p2/P during 1920-1939 was almost exactly twice that for 1940-1971. These figures vividly illustrate the fact that it is not possible to predict, for example, the erosional consequences of deforestation on tropical islands without understanding the rapid and large-scale fluctuations in intensity of erosional Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S. ); United States. Bureau of Sport Fisheries and Wildlife. Washington, D. C. : [Smithsonian Pres
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