New Zealand Journal of Marine and Freshwater Research abstracts
The "Furkert-Heath"; relationship for tidal inlet stability reviewed
TERRY M. HUME CHARLES E. HERDENDORF§
Water Quality Centre
Ministry of Works and Development
Private Bag, Hamilton
New Zealand
Abstract
The "Furkert-Heath" relationship is a commonly used method of assessing the stability of New Zealand inlets. However, the equation published by Heath in 1975 was incorrectly calculated which has led to misinterpretation of data in some cases. Recalculation resulted in a new linear relation, presented here, between the inlet gorge cross-sectional area
A and tidal prism
Q. Misuses of the "Furkert-Heath" equation are identified including: extrapolating predictions beyond the data field; neglecting errors inherent in measurement of
A and
Q; method of characterising sedimentation regime; neglecting confidence limits of data; using
A-Q relationships as the sole indicator of inlet stability; and applying the relationship to inlets other than barrier-enclosed inlets.
Keywords tidal inlet stability; gorge channel; inlet area-tidal prism relationships
New Zealand Journal of Marine and Freshwater Research, 1988, Vol. 22: 129-134 ; Crown copyright 1988Received 20 August 1986; accepted 6 April 1987
PDF file of entire paper: medium quality (428K); (scanned from paper original: notes about this process)
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