MLWN (Mean Low Water Neaps)
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MLWN (Mean Low Water Neaps), is a tidal datum used in marine navigation to describe the average height of low waters during neap tide cycles.
Here is a detailed breakdown of the term:
Definition: MLWN is the average height of all low waters recorded during neap tide periods over a long-term period, typically 19 years.
Context (Neap Tides): Neap tides occur twice a month during the first and third quarters of the moon. At this time, the gravitational forces of the sun and moon are at right angles, resulting in a smaller tidal range (the difference between high and low water is minimal).
Navigation Use: MLWN is used by mariners and harbor authorities to understand the minimum expected water depth during these periods of reduced tidal range.
Here is a detailed breakdown of the term:
Definition: MLWN is the average height of all low waters recorded during neap tide periods over a long-term period, typically 19 years.
Context (Neap Tides): Neap tides occur twice a month during the first and third quarters of the moon. At this time, the gravitational forces of the sun and moon are at right angles, resulting in a smaller tidal range (the difference between high and low water is minimal).
Navigation Use: MLWN is used by mariners and harbor authorities to understand the minimum expected water depth during these periods of reduced tidal range.