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Glossary

Term Description
Hrms Root mean square wave height.
Hsig Significant wave height = average height of the waves which comprise the highest 33% of waves in a given sample period (typically 20 to 30 minutes).
ha Hectares (1 ha being equivalent to approximately 2.4 acres).
Habitat The local environment occupied by an organism.
Habitat creation The recreation of a natural habitat by man.
Harmonic Analysis Process of measuring or calculating the relative amplitudes and frequencies of all the significant harmonic components present in a given wave form.
Harmonic constants The amplitudes and epochs of the harmonic constituents of the tide or tidal current at any place.
Harmonic function In its simplest form, a quantity that varies as the cosine of an angle that increases uniformly with time. It may be expressed by the formula: y = A cos at, in which y is a function of time (t), A is a constant coefficient, and a is the rate of change in the angle at.
HAT Highest Astronomical Tide
Head The difference in water level at either end of a strait, channel, inlet, etc.
High water (HW) The maximum height reached by a rising tide.
High water mark A line or mark left upon tide flats, beach, or along shore objects indicating the elevation of the intrusion of high water.
Hindcast The prediction of wave characteristics using meteorological information as opposed to the measurements of these features.
Hinterland The infrastructure and transportation routes associated with the port, used to define the area of land behind a port
Hmax Maximum wave height in a recorded burst of raw data.
Hmean Mean wave height.
HMWBs Heavily Modified Water Bodies
Holocene The last 10,000 years in the geological timescale.
HPLC High Performance Liquid Chromatography
HTA Historical Trends Analysis
HW High Water
HWM High water Mark
Hydrodynamic The processes and science associated with the flow and motion in water produced by applied forces.
Hydrodynamic The flow and motion in water produced by applied forces

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Last Modified on: 19 June 2011
Printed from the Estuary Guide on 26/08/2019 05:03:15