Ocean acoustic tomography water formation and the gyre circulation. Other applications include the measurement of ocean tides, and the estimation of ocean mesoscale dynamics by combining tomography, satellite altimetry, and in situ data with ocean dynamical models. In addition to the decade-long measurements obtained in the North Pacific, acoustic thermometry has been employed to measure temperature changes of the upper layers of the Arctic Ocean basins, which continues to be an area of active interest. using data from acoustic pulses sent from one end of the earth to the other. Acoustic thermometry is an idea to observe the world's ocean basins, and the
Largest Fair on the Rhine the public. In 1910, the fair was moved to its present location, the fairgrounds on the left Rhine river bank in Düsseldorf’s district Oberkassel overlooking the city’s historic Old Town. Since then, the format and focus of the fair have changed significantly into the more secular and entertainment-oriented event it is today. Attendee numbers rose dramatically, and the event was stretched into 9 days. The name of the event developed in the 1970 simply into “Largest Fair on the Rhine” and has stuck since then. It is not only Germany’s fourth-largest fair but also one of the most important events