Long-range asymptotic behavior of vertical travel-time sensitivity kernels

2013 ◽  
Vol 134 (4) ◽  
pp. 3201-3210 ◽  
Author(s):  
E. K. Skarsoulis ◽  
B. D. Cornuelle ◽  
M. A. Dzieciuch
Keyword(s):  
Asymptotic Behavior ◽  
Travel Time ◽  
Long Range ◽  
Time Sensitivity ◽  
Vertical Travel

Asymptotic behavior of vertical travel-time sensitivity kernels with increasing propagation range

2011 ◽  
Vol 130 (4) ◽  
pp. 2392-2392
Author(s):  
E. K. Skarsoulis ◽  
B. D. Cornuelle ◽  
M. A. Dzieciuch
Keyword(s):  
Asymptotic Behavior ◽  
Travel Time ◽  
Time Sensitivity ◽  
Vertical Travel

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

Travel-Time Sensitivity Kernels In Long-Range Propagation

2007 ◽  
Author(s):  
Emmanuel Skarsoulis ◽  
Bruce Cornuelle
Keyword(s):  
Travel Time ◽  
Long Range ◽  
Time Sensitivity

Travel-time sensitivity kernels in long-range propagation

2009 ◽  
Vol 126 (5) ◽  
pp. 2223-2233 ◽  
Author(s):  
E. K. Skarsoulis ◽  
B. D. Cornuelle ◽  
M. A. Dzieciuch
Keyword(s):  
Travel Time ◽  
Long Range ◽  
Time Sensitivity

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

A VELOCITY FUNCTION INCLUDING LITHOLOGIC VARIATION

Geophysics ◽  
1953 ◽  
Vol 18 (2) ◽  
pp. 271-288 ◽  
Author(s):  
L. Y. Faust
Keyword(s):  
Travel Time ◽  
Direct Measurement ◽  
General Knowledge ◽  
Velocity Function ◽  
Geologic Time ◽  
True Resistivity ◽  
Resistivity Log ◽  
Vertical Travel ◽  
Water Resistivity

Assuming velocity (V) a function of depth (Z), geologic time (T), and lithology (L) the resistivity log is an approach to the determination of L. Since general knowledge of water resistivity values [Formula: see text] is lacking, the values of true resistivity [Formula: see text] against [Formula: see text] were compared for 670,000 feet of section widely distributed geographically. Variations in [Formula: see text] were presumably averaged out thereby, and the results indicate that statistically [Formula: see text] and [Formula: see text] This formula was applied to an additional 270,000 feet of section more localized geographically to observe its accuracy in predicting vertical travel time. If a correction map for [Formula: see text] variations is applied the results are encouraging but less accurate than good velocity surveys. Examination of an inconclusively small amount of data with more careful measurements of [Formula: see text] suggests that accuracy comparable to direct measurement may be attainable. The cooperation of other investigators and of the electric‐logging specialists is desired.

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