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Glossary

Term Description
Lag deposit Residual accumulation of coarse fragments left behind after waves/currents have winnowed and washed away finer material.
Lagrangian An observation that moves with the field of flow (e.g. float tracking).
Lagrangian Observation that moves with the field of flow (e.g. float tracking)
LAT Lowest Astronomical Tide
Leachate Water that has passed through a soil and that contains soluble material removed from that soil.
Leaching The downward movement of a material in solution through soil.
LiDAR Light Detection and Range
Lithology The general character of a rock or sediment expressed in terms of its mineral composition, its texture and grain size and included structures.
Littoral Of, or pertaining to, the shore.
Littoral drift, littoral transport The movement of beach material in the littoral zone by waves and currents. Includes movement parallel (longshore drift) and perpendicular (cross-shore transport) to the shore.
LNR Local Nature Reserve
Locally generated waves Waves generated within the immediate vicinity, say within 50 km, of the point of interest.
Long Wave Waves with periods greater than 30 seconds.
Longshore Parallel and close to the coastline.
Longshore bar Bar running approximately parallel to the shoreline.
Longshore drift Movement of (beach) sediments approximately parallel to the coastline.
Low water (LW) The minimum height reached by a falling tide.
Lunar tide That part of the tide on the Earth due solely to the Moon as distinguished from that part due to the Sun.
LW Low Water
LWM Low Water Mark

Glossary index

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Last Modified on: 19 June 2011
Printed from the Estuary Guide on 26/08/2019 03:31:29