For echo sounders, the distance actually traveled is two times the distance to the seafloor from the source. transducer (from the transmission source, to the bottom and back again). This results in a significant. source of signal loss for the system receiving the sound pulse, which must be compensated for at the.
Average Weather in Hilton Head Island South Carolina, United States. In Hilton Head Island, the summers are hot and oppressive, the winters are cold and windy, and it is wet and partly cloudy year round. Over the course of the year, the temperature typically varies from 42Â°F to 89Â°F and is rarely below 30Â°F or above 95Â°F.
The average hourly wind speed in Hilton Head Island experiences mild seasonal variation over the course of the year. The windier part of the year lasts for 7.5 months, from September 26 to May 10, with average wind speeds of more than 10.5 miles per hour.