tide gauges in ports around the world, and also rely on government agencies (such as NOAA). Data collected from tide gauges is also of interest to scientists measuring global weather patterns, the mean sea water level, and trends - notably those potentially associated with global warming. Modern gauges In recent years new technologies have developed allowing for real-time, remote tide information to be published online via a solar powered wireless connection to a tide sensor. Acoustic/ultrasonic sensors have already been deployed to great effect and the data is regularly broadcast via Twitter and also displayed online. See also Level sensor Sea level rise Stream gauge Fort Denison#Tide gauge References Further reading External links Historical Examples Brown University Mean Sea Level Explanation NOAA Tide Data