Now a days, sea level is measured with satellites, sending a signal to the Earth’s sea surface and back to calculate the distance from the surface to the satellite. Variations in sea level can occur at different times, such as tides, when the level of water can raise or lower due to the gravitational pull of the moon. Another means of measuring sea level is the SEAFRAME (Sea Level Fine Resolution Acoustic Measuring Equipment) which uses a form or radar to measure sea level, temperature, wind, and direction. These SEAFRAME stations populate different parts of the South Pacific Ocean around New Guinea and Australia.
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