Results 251 to 260 of about 98,746 (302)

A seasonal aggregation of juvenile scalloped hammerheads Sphyrna lewini along beaches of the Gold Coast, Australia. [PDF]

J Fish Biol
Lubitz N, Doupain K, Houlihan S, Mitchell JD.   +3 more
europepmc   +1 more source

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Some Observations on Underwater Hearing

The Journal of the Acoustical Society of America, 1971
We examine the relative role of bone conduction and tympanic conduction in underwater localization and detection by humans. Basically, we placed divers underwater and covered up various parts of the skull and outer ear with neoprene foam (an insulator of sound) and measured thresholds and localization accuracy.
D A, Norman, R, Phelps, F, Wightman
openaire   +2 more sources

Micro ROV underwater observations

Oceans '99. MTS/IEEE. Riding the Crest into the 21st Century. Conference and Exhibition. Conference Proceedings (IEEE Cat. No.99CH37008), 2003
In 1999 P.P. Shirshov Institute of Oceanology RAS together with Industrial electronics (Indel) company, Moscow, designed and tested a small sized microROV "GNOM" intended for underwater investigations and observations. It contains video camera, thrusters, lights and sensors.
B.J. Rozman, L.L. Utyakov
openaire   +1 more source

Underwater volcano observation by autonomous underwater vehicle "r2D4"

Europe Oceans 2005, 2005
Based on the successes in development and field operations of AUV "R-One Robot", the Underwater Technology Research Center at the University of Tokyo established a five year project for a next generation long-range cruising type AUV from 2001, an AUV named "r2D4".
K. Nasahashi, T. Ura, A. Asada, T. Obara, T. Sakamaki, K. Kim, K. Okamura   +6 more
openaire   +1 more source

Visual observation of underwater objects by autonomous underwater vehicles

2003 International Conference Physics and Control. Proceedings (Cat. No.03EX708), 2003
To investigate underwater objects such as piles and caissons in harbors by taking visual images, autonomous under water vehicles (AUVs) have advantages that they have no umbilical cable which may get entangled in the target object and surrounding obstacles.
H. Kondo, T. Ura
openaire   +1 more source

An Underwater Observation Chamber

The Progressive Fish-Culturist, 1959
(1959). An Underwater Observation Chamber. The Progressive Fish-Culturist: Vol. 21, No. 3, pp. 131-134.
Julius Rockwell, Sung Pal Chur
openaire   +1 more source

An autonomous underwater vehicle for observation of underwater structure

International Congress Series, 2006
Abstract Various kinds of robots have been developed actively with progress of computer, and the operations with robots in the extreme environment such as rescue, space and ocean are getting practical solutions. The underwater robots are expected as one of solutions for underwater activities, i.e., maintenance of underwater structures, observations ...
Satomi Ohata, Kazuo Ishii, Hiroshi Sakai, Toshinari Tanaka, Tamaki Ura   +4 more
openaire   +1 more source

Radionuclide observables of underwater nuclear explosive tests

Journal of Environmental Radioactivity, 2018
There remain technical challenges for an On-site Inspection (OSI) in the high seas environment, which gathers evidence of a violation of the Comprehensive Nuclear-Test-Ban Treaty (CTBT). For terrestrial nuclear explosions, the radionuclide observables are well defined and States Parties have chosen 17 particulate radionuclides that allow discrimination
Jonathan L, Burnett, Brian D, Milbrath
openaire   +2 more sources