大潮只在春天有吗？用月相看懂大潮、小潮与潮差

During full or new moons—which occur when the Earth, sun, and moon are nearly in alignment—average tidal ranges are slightly larger.

平均潮差与月相解释不等于具体海岸当日水位。

This means that high tides are a little higher and low tides are a little lower than average.

平均潮差与月相解释不等于具体海岸当日水位。

Spring tides occur twice each lunar month all year long, without regard to the season.

平均潮差与月相解释不等于具体海岸当日水位。

This produces moderate tides known as neap tides, meaning that high tides are a little lower and low tides are a little higher than average.

月内平均潮差概念，不是地方水位表。

Neap tides occur during the first and third quarter moon, when the moon appears "half full."

平均潮差与月相解释不等于具体海岸当日水位。

NOAA’s tide and tidal current predictions take into account astronomical considerations due to the position of the moon and the sun.

平均潮差与月相解释不等于具体海岸当日水位。