Underwater noise of small personal watercraft (jet skis)

The underestimated impact of personal watercraft injuries.

The popularity of personal watercraft is steadily increasing, as are injuries related to their use. Many of these injuries are not reported to law enforcement agencies, and available personal watercraft injury statistics are suspected to be inaccurate. All personal watercraft-related injuries treated within a four-hospital system (including the regional Level I trauma center) between January 19...

Types, Patterns and Outcomes of Personal Watercraft-Related Trauma

The incidence of personal watercraft (PWC)-related injuries have increased substantially recently along with its popularity as a recreational water sport.[1,2] PWCs are typically referred as Jet Ski or motorboat which are usually operated by young adults in an unconventional manner.[3] In 2013, there were 4,062 recreational boating accidents reported in the United States which resulted in 2,620...

Hydrostatic rectosigmoid perforation: a rare personal watercraft injury.

Personal watercrafts (PWC), also known as jet skis, seadoos, and wave-runners have risen in popularity since their introduction in the 1970s. Hydrostatic rectal injury is a rare presentation of passengers thrown off a PWC. The perforation of the rectum is owing to the excessive hydrostatic force of water exerted through the anal canal. We present the first case of rectosigmoid perforation secon...

Underwater operation of a DBD plasma jet

A plasma jet produced in water using a submerged ac excited electrode in a coaxial dielectric barrier discharge configuration was studied. Plasma jet formation was found to occur only while the source was submerged. Plasma jet operation was characterized with and without gas flow. It was found that over 60% of the discharge power was deposited into the water and did not vary appreciably with ex...

Underwater Ambient Noise