Tide and tsunami reporting system

The system has been designed to transmit water pressure data from the sea floor to the surface as an interval between two pulses. Upon acoustic query from the surface the bottom unit was designed to respond with the data readout and to initiate the taking of a new pressure reading. The first unit was installed under Ocean Station Papa (Lat.50N., Long. 145 W.) in a cooperative program with Dr. John Garrett of the Canadian Department of Environment. Due to an unforeseen coincidence the bottom unit became "self-querying" upon emplacement; thus it operated continuously which greatly shortened the battery life of the system. During the two months the system, was functional data were recorded at the surface mostly during daylight hours. Data for a tidal analysis were obtained but no tsunami occurred during the recording space, The second unit has been emplaced under Ocean Station Papa which should provide data complementing the four Canadian seamount tide stations.