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Tide gauge measurements are used for a variety of scientific purposes, not least of which are the definition of vertical data and the detection of long-term variations in mean sea level. GPS measurements at tide gauge sites provide a means of separating local verticl motions from sea level rise, and a means of unifying vertical data in a single reference system. This paper describes a GPS survey to...
GPS water-surface elevation data from the panhandle region of the Okavango Fan (northwestern Botswana) show that a prominent anastomosed reach occurs within a relative valley-gradient depression inferred to represent a small graben structure. The Okavango River undergoes an abrupt change in pattern as it approaches the upstream fault zone of the graben, developing small meander loops and higher sinuosity...
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