scholarly journals Experimental Study on Transmitted Wave Characteristic about Wave Absorbing Slit Caisson Breakwater with Sloping Top Wall in Deep Sea

2008 ◽  
Vol 55 ◽  
pp. 951-955
Author(s):  
Daiji NISHIMURA ◽  
Takao KAWAI ◽  
Yoshikazu HORII ◽  
Takanori MORIKAWA ◽  
Kaname YOSHIDA
Keyword(s):  
Experimental Study ◽  
Deep Sea ◽  
Transmitted Wave ◽  
Wave Characteristic ◽  
Caisson Breakwater

scholarly journals EXPERIMENTAL STUDY ON WAVE REFLECTION, STABILITY OF MOUND ARMOR BLOCKS, AND WAVE FORCE ON UPRIGHT ABSORBING SLIT CAISSON BREAKWATER IN DEEP SEA.

2002 ◽  
Vol 18 ◽  
pp. 413-418
Author(s):  
Atsushi FUJII ◽  
Susumu OGURA ◽  
Yasuhiro TAKEUCHI ◽  
Takanori MORIKAWA ◽  
Tadashi NISHIMURA
Keyword(s):  
Experimental Study ◽  
Deep Sea ◽  
Wave Reflection ◽  
Wave Force ◽  
Caisson Breakwater

scholarly journals AN EXPERIMENTAL STUDY OF A MULTIPLE-SLIT-WALL CAISSON BREAKWATER FOR ROUGH SEAS

1999 ◽  
Vol 15 ◽  
pp. 683-688
Author(s):  
Tsuneo SATOH ◽  
Ken ABE ◽  
Yasuhiro KUNISHIGE ◽  
Kiyoshi KOMIYAMA ◽  
Tetsuji MURAMOTO
Keyword(s):  
Experimental Study ◽  
Caisson Breakwater

Experimental study of internal waves over a slope

1974 ◽  
Vol 66 (2) ◽  
pp. 223-239 ◽  
Author(s):  
David Cacchione ◽  
Carl Wunsch
Keyword(s):  
Boundary Layer ◽  
Experimental Study ◽  
Internal Waves ◽  
Spatial Dependence ◽  
Bottom Boundary Layer ◽  
Bottom Slope ◽  
Wave Characteristic ◽  
Bottom Boundary ◽  
The Waves ◽  
Wave Breakdown

Internal waves of the fundamental mode propagating into a shoaling region have been studied experimentally in a continuously stratified fluid. The waves divide into three classes depending upon the ratio of the bottom slope γ to the wave-characteristic slopec. For γ/c< 1, the amplitude and wavenumber changes of the waves over the slope are in reasonable accord with a simple inviscid linear theory, prior to wave breakdown near the intersection of the slope and surface. Considerable mixing occurs in this corner region. When γ/c= 1, a striking instability of the bottom boundary layer is observed and the waves are heavily damped. When γ/c> 1, the waves are inhomogeneous and have complex spatial dependence.

scholarly journals Experimental study on electrical properties of deep-sea cobalt-rich crusts

2017 ◽  
pp. 1-5
Author(s):  
Jianhua Hu ◽  
Shaojun Liu ◽  
Qiong Hu ◽  
Ruiqiang Zhang ◽  
Yu Dai
Keyword(s):  
Experimental Study ◽  
Electrical Properties ◽  
Deep Sea

scholarly journals EXPERIMENNTAL STUDY ON CURRENT CHARACTERISTIC AND TRANSMITTED WAVE CHARACTERISTIC IN PERMEATED BREAKWATER

2011 ◽  
Vol 67 (2) ◽  
pp. I_112-I_117
Author(s):  
Yoshifumi UCHIDA ◽  
Akihiko JINDOU ◽  
Takaaki KITOU ◽  
Tatsushige SUGIMOTO ◽  
Takanori MORIKAWA ◽  
...  
Keyword(s):  
Transmitted Wave ◽  
Wave Characteristic ◽  
Current Characteristic

scholarly journals Bioluminescence of the Largest Luminous Vertebrate, the Kitefin Shark, Dalatias licha: First Insights and Comparative Aspects

2021 ◽  
Vol 8 ◽  
Author(s):  
Jérôme Mallefet ◽  
Darren W. Stevens ◽  
Laurent Duchatelet
Keyword(s):  
Experimental Study ◽  
New Zealand ◽  
Deep Sea ◽  
Hormonal Control ◽  
Shark Species ◽  
Control Analysis ◽  
Light Organs ◽  
First Time ◽  
Insight Into

Bioluminescence has often been seen as a spectacular yet uncommon event at sea but considering the vastness of the deep sea and the occurrence of luminous organisms in this zone, it is now more and more obvious that producing light at depth must play an important role structuring the biggest ecosystem on our planet. Three species of deepwater sharks (Dalatias licha, Etmopterus lucifer, and Etmopterus granulosus) were collected from the Chatham Rise, off New Zealand, and for the first time, we documented their luminescence. Comparison of glowing shark pictures, combined with histological description of light organs and hormonal control analysis, highlight the evolutive conservation of the bioluminescence process within Dalatiidae and Etmopteridae. A special emphasis is placed on the luminescence of D. licha, the largest known luminous vertebrate. This first experimental study of three luminous shark species from New Zealand provides an insight into the diversity of shark bioluminescence and highlights the need for more research to help understand these unusual deep-sea inhabitants: the glowing sharks.

scholarly journals Design and Validation of Thermal Insulation for Deep-sea Fluid Sampler of Jiaolong Human Occupied Vehicle

2021 ◽  
Vol 2095 (1) ◽  
pp. 012070
Author(s):  
Kaiben Yu ◽  
Le Zong ◽  
Shengqi Yu ◽  
Qingjian Meng ◽  
Baohua Liu
Keyword(s):  
Experimental Study ◽  
Thermal Insulation ◽  
Deep Sea ◽  
Silica Aerogel ◽  
Simulation Analysis ◽  
Maximum Temperature ◽  
Vehicle Simulation ◽  
Variation Characteristics ◽  
Insulation Effect ◽  
Insulation Performance

Abstract In this paper, a thermal insulation structure with silica aerogel felt as filler material was designed for the requirements of deep-sea fluid thermal insulation sampling technology for Jiaolong human occupied vehicle. Simulation analysis of thermal insulation performance was carried out and an experimental prototype was developed for the thermal insulation structure. Experimental study on thermal insulation performance was conducted with the variation characteristics of the operation environment for Jiaolong human occupied vehicle being taken into account. Results show that the silica aerogel felt with a thickness of 30 mm filled in the radial space between the inner and outer cylinders can achieve the expected thermal insulation effect during the diving-sampling-transferring process, with maximum temperature rise of 8.5 °C, and can meet the requirements of deep-sea fluid thermal insulation sampling technology.

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