Estimation of Potential Impacts from Offshore Liquefied Natural Gas Terminals on Red Snapper and Red Drum Fisheries in the Gulf of Mexico: An Alternative Approach

2007 ◽  
Vol 136 (3) ◽  
pp. 655-677 ◽  
Author(s):  
Benny J. Gallaway ◽  
William J. Gazey ◽  
John G. Cole ◽  
Robert G. Fechhelm
Keyword(s):  
Natural Gas ◽  
Gulf Of Mexico ◽  
Red Drum ◽  
Liquefied Natural Gas ◽  
Red Snapper ◽  
Alternative Approach

Competitive position of the expanded Panama Canal in the shipment of liquefied natural gas

2018 ◽  
Vol 233 (4) ◽  
pp. 1154-1176 ◽  
Author(s):  
Luis Carral ◽  
Javier Tarrío-Saavedra ◽  
Diego Crespo-Pereira ◽  
Marina Fernández-Campoamor ◽  
Rodolfo Sabonge
Keyword(s):  
Natural Gas ◽  
Gulf Of Mexico ◽  
Gas Injection ◽  
The United States ◽  
Liquefied Natural Gas ◽  
Panama Canal ◽  
Order Book ◽  
Propulsion Systems ◽  
Competitive Position ◽  
Alternative Routes

The appearance of new gas extraction technologies has led to surplus production in the United States (Gulf of Mexico). At the same time, energy consumption in Asia has increased significantly and Japan has introduced important changes to its post-Fukushima energy policies. Taken together, these factors have resulted in an imbalance in production and consumption between the Atlantic and Pacific Maritime Areas. Over the same period of time, the Panama Canal expansion opened, permitting transit by liquefied natural gas vessels for the first time. These developments are reflected in the current order book for liquefied natural gas carriers, which is composed entirely of ships in the new Neopanamax category. The canal transit fees and new propulsion systems for these ships—dual fuel diesel electric and electronically controlled gas injection—significantly impact the price of cargo at the destination. This study conducts a sensitivity analysis of the variables for transportation costs in order to determine the expanded Canal’s competitive position. In addition, the study uses a Monte Carlo simulation to obtain the most representative values for total cost based on factors such as the type of propulsion and fuel as well as the distance traveled. The analysis clearly demonstrates the competitiveness of exporting liquefied natural gas via the Panama Canal from terminals in the Gulf of Mexico and the Caribbean to consumers in Asia, as well as the competitiveness of the canal itself versus alternative routes. With respect to propulsion systems, the study demonstrates the greater competitive advantage of electronically controlled gas injection propulsion.

Mitochondrial DNA Diversity and Population Structure in Marine Fish Species from the Gulf of Mexico

1994 ◽  
Vol 51 (S1) ◽  
pp. 205-214 ◽  
Author(s):  
John R. Gold ◽  
Linda R. Richardson ◽  
Carol Furman ◽  
Feng Sun
Keyword(s):  
Mitochondrial Dna ◽  
Gulf Of Mexico ◽  
Isolation By Distance ◽  
Red Drum ◽  
Red Snapper ◽  
Maximum Parsimony Analysis ◽  
Female Population ◽  
Mtdna Haplotypes ◽  
Haplotype Frequencies ◽  
Mtdna Haplotype

Variation in mitochondrial DNA (mtDNA) was examined among 693 red drum (Sciaenops ocellatus), 300 black drum (Pogonias cromis), and 421 red snapper (Lutjanus campechanus) sampled from several localities in the Gulf of Mexico. The number of mtDNA genotypes (haplotypes) observed were: 99 in red drum, 37 in black drum, and 68 in red snapper. Variation in mtDNA haplotype frequencies among localities in all three species was not significant, although two mtDNA haplotypes in black drum appeared to be clinally distributed. Maximum-parsimony analysis and phenetic clustering of mtDNA haplotypes and of samples in each species revealed little evidence of phylogeographic structuring. These data indicate that gene flow among localities in each species is sufficient to preclude genetic divergence. Spatial autocorrelation analysis of mtDNA haplotype frequencies revealed an isolation-by-distance effect in red drum and black drum, and indicated that migration between neighboring estuaries or bays in black drum may be less frequent than in red drum. Spatial autocorrelations in red snapper were negative in all distance classes, suggesting little migration even between adjacent localities. Differences in intrapopulational mtDNA diversities were found in all three species, suggesting that geographic differences in effective female population size may occur within each species.

Testing assumptions of otolith radiometric aging with two long-lived fishes from the northern Gulf of Mexico

2001 ◽  
Vol 58 (6) ◽  
pp. 1244-1252 ◽  
Author(s):  
M Scott Baker, Jr. ◽  
Charles A Wilson ◽  
Daniel L VanGent
Keyword(s):  
Gulf Of Mexico ◽  
Activity Ratio ◽  
Red Drum ◽  
Sciaenops Ocellatus ◽  
Red Snapper ◽  
Great Promise ◽  
Lutjanus Campechanus ◽  
Northern Gulf Of Mexico ◽  
Elemental Analyses ◽  
Mass Increase

In this study, we evaluate the assumptions for estimating ages with radiometric and elemental analyses of otoliths of red snapper (Lutjanus campechanus) and red drum (Sciaenops ocellatus) from the northern Gulf of Mexico. In whole otoliths of both red snapper and red drum, 226Ra activity was inversely correlated with the otolith mass increase with age, validating the assumption that 226Ra accumulation in otoliths occurs at a rate proportional to that of Ca. 222Rn emanation from otoliths decreased as otolith mass increased. 222Rn loss occurred in all red snapper otolith samples ([Formula: see text]4.1%) and, to a lesser extent, in red drum otolith samples ([Formula: see text]0.6%) and decreased with increasing size (age) of the otolith. For red drum, the assumption that the initial activity ratio of 210Po to 226Ra in otoliths is essentially zero was indirectly validated with elemental analyses of Pb and Ba. Radiometric age estimation of shallow-water fishes from the northern Gulf of Mexico holds great promise, considering that 226Ra activities observed in this study are some of the highest recorded to date for species to which the 210Pb/226Ra dating technique has been applied.

Liquefied natural gas in China

2000 ◽  
Author(s):  
Dean Girdis ◽  
Stratos Tavoulareas ◽  
Ray Tomkins
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas

Analysis of standardization documentation in the field of liquefied natural gas

2018 ◽  
pp. 59-61
Author(s):  
V.A. Yasashin ◽  
◽  
E.S. Gadylshina ◽  
A.S. Bolotokov ◽  
◽  
...  
Keyword(s):  
Natural Gas ◽  
Liquefied Natural Gas
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