tidal cycles Flashcards
1
Q
how long is a lunar day?
A
24 hours and 50 minutes
2
Q
how long is a synodical or lunar month?
A
29 1/2 days
3
Q
how long is tropical month?
A
27 1/3 days
4
Q
how long is anomalistic month?
A
27 1/2 days
5
Q
it is an important lunar cycle in a period of 18.6 or 19 years
A
nodal period
6
Q
the interval between the moon’s meridian transit and a particular phase of tide
A
lunitidal interval
7
Q
a level from which heights and depths are measured
A
tidal datum
8
Q
the average height of all low waters at a place
A
mean low water
9
Q
the average height of the surface of the sea for all stages of the tide over a 19-year period
heights of land features are usually referred on nautical charts to a high water datum
the level used on charts of the US land territories
A
mean high water
