. The ecology of delta marshes of coastal Louisiana : a community profile . 1800 1820 1840 1860 1880 1900 Date 1920 1940 1960 1980 Figure 22. Composite subaerial growth curve, Mississippi River subdeltas. Total subaerial land determined from averages at 10-yr internals (Wells et al, 1982). "greenhouse" effect that is wanning the earth's surface and melting the polar ice caps. The net affect of both true sea- level rise and coastal subsidence has been a change in the coastal submergence rate from about cm/yr during 1948 to 1959, to nearly on/yr between 1959 and 1971. Although
. The ecology of delta marshes of coastal Louisiana : a community profile . 1800 1820 1840 1860 1880 1900 Date 1920 1940 1960 1980 Figure 22. Composite subaerial growth curve, Mississippi River subdeltas. Total subaerial land determined from averages at 10-yr internals (Wells et al, 1982). "greenhouse" effect that is wanning the earth's surface and melting the polar ice caps. The net affect of both true sea- level rise and coastal subsidence has been a change in the coastal submergence rate from about cm/yr during 1948 to 1959, to nearly on/yr between 1959 and 1971. Although these data are for a gauge at 1 25- 1 0- 0-5 Years spanned by estimate Midpoint Reference 1 Adams et at 1976 20ozier 1983 3Gaqliano f. Van Beck 1970
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