Predictions of internal‐wave effects on ocean acoustic coherence, travel‐time variance, and intensity moments for very long‐range propagation

1988 ◽  
Vol 84 (4) ◽  
pp. 1414-1424 ◽  
Author(s):  
Stanley M. Flatté ◽  
Roland B. Stoughton
Keyword(s):  
Internal Wave ◽  
Travel Time ◽  
Long Range ◽  
Time Variance ◽  
Wave Effects

Internal wave effects on long‐range ocean acoustic tomography

1995 ◽  
Vol 97 (5) ◽  
pp. 3235-3235
Author(s):  
M. A. Wolfson ◽  
J. L. Spiesberger ◽  
F. D. Tappert
Keyword(s):  
Internal Wave ◽  
Long Range ◽  
Acoustic Tomography ◽  
Wave Effects ◽  
Ocean Acoustic Tomography

1—by Captain A. Wepster

1963 ◽  
Vol 16 (4) ◽  
pp. 389-398
Keyword(s):  
United States ◽  
Travel Time ◽  
Long Range ◽  
The United States ◽  
Point Of View ◽  
Ship Routing ◽  
Waves And Currents ◽  
Meteorological Institute

In 1960 Hanssen and James described to the Institute a system developed and used by the United States Hydrographic Office for selecting the optimum track for transoceanic crossings by applying long-range predictions of winds, waves and currents to a knowledge of how the routed vessel reacts to these variables. The paper (Journal, 13, 253) described how, over a period of two years, an average reduction in travel time of 14 hours was achieved over 1000 optimum routes.In the present papers, presented at an Institute meeting held in London on 19 April, Captain Wepster of the Holland-America Line first of all goes into the benefits which effective ship routing offers the ship operator and then describes the results of the experimental routing programme undertaken by his Company in association with the Royal Netherlands Meteorological Institute. Mr. Verploegh of that Institute then discusses the programme from the forecaster's point of view.

Optimum Ship Routing

1960 ◽  
Vol 13 (3) ◽  
pp. 253-272 ◽  
Author(s):  
George L. Hanssen ◽  
Richard W. James
Keyword(s):  
United States ◽  
Travel Time ◽  
Long Range ◽  
Wind Waves ◽  
The United States ◽  
Ship Routing ◽  
Waves And Currents

The paper describes the system developed and used by the United States Hydrographic Office for selecting the optimum track for transoceanic crossings by applying long-range predictions of wind, waves and currents to a knowledge of how the routed vessel reacts to these variables. Over a period of two years, over 1000 optimum ship routes were provided to one authority, with an average reduction in travel time of 14 hours.

Estimation of the Travel Time Using the New Measurement Technique for Long-range Transmission

2004 ◽  
Vol 43 (5B) ◽  
pp. 3169-3175 ◽  
Author(s):  
Yong Wang ◽  
Hiroyuki Hachiya ◽  
Toshiaki Nakamura ◽  
Hidetoshi Fujimori
Keyword(s):  
Travel Time ◽  
Long Range ◽  
Measurement Technique

Travel‐time sensitivity kernels in long‐range propagation

2008 ◽  
Vol 123 (5) ◽  
pp. 3913-3913
Author(s):  
Emmanuel Skarsoulis ◽  
Bruce Cornuelle ◽  
Matthew Dzieciuch
Keyword(s):  
Travel Time ◽  
Long Range ◽  
Time Sensitivity

ACOUSTIC TRAVEL-TIME PERTURBATIONS DUE TO SHALLOW-WATER INTERNAL WAVES IN THE YELLOW SEA

2014 ◽  
Vol 22 (01) ◽  
pp. 1440003
Author(s):  
FAN LI ◽  
XINYI GUO ◽  
TAO HU ◽  
LI MA
Keyword(s):  
Internal Wave ◽  
Shallow Water ◽  
Travel Time ◽  
Internal Waves ◽  
Yellow Sea ◽  
High Frequency ◽  
Simple Relation ◽  
Ocean Dynamics ◽  
The Yellow Sea ◽  
Acoustic Travel Time

Internal waves in shallow-water cause variations in sound speed profiles and lead to acoustic travel-time perturbations. In summer 2007, a combined acoustics/physical oceanography experiment was performed to study both the acoustical properties and the ocean dynamics of the Yellow Sea. The internal waves were recorded by the thermistor arrays. The receiving hydrophone array is enabled to monitor the acoustic travel-time fluctuations over the internal wave activities. It is shown that the activity of high frequency internal waves (having 3–6 min period) dominated the travel time perturbation. In this paper, we compare the data of high frequency internal wave with acoustic travel-time perturbation data and analyze the correlation between them. A simple relation between the modal travel-time perturbation and the displacement of the thermocline is developed which might be useful for monitoring purposes.

scholarly journals A long‐range acoustic experiment with sampling in the internal wave fluctuation band

1988 ◽  
Vol 84 (S1) ◽  
pp. S91-S91
Author(s):  
Timothy F. Duda ◽  
Stanley M. Flatté ◽  
Harry A. DeFerrari ◽  
Hien B. Nguyen
Keyword(s):  
Internal Wave ◽  
Long Range
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