[1] Sea level rise in the Gulf ofMexico has occurred at a rate of 1.8–2.2 mm/yr during the 20th century, or nearly the same as observed globally due to combined steric and water mass changes. Tide gauges in coastal Louisiana, however, record a substantially larger rate of rise and while a number of causal mechanismsmay be responsible, their specific contribution is poorly understood. Using a re...

The perturbation of the lunar motion caused by a hypothetical violation of the equivalence principle is analytically worked out in terms of power series à la Hill-Brown. The interaction with the quadrupolar tide is found to amplify the leading order term in the synodic range oscillation by more than 62 %. Confirming a recent suggestion of Nordtvedt, we find that this amplification has a pole si...

Partially purified toxin(s), GbTX, extracted from Gymnodinium breve red tide organisms elicits a spontaneous train of action potentials in the squid giant axon. The spikes have a shape similar to that in the normal seawater control except for an increase in the rate of recovery from the afterhyperpolarization. With this more rapid recovery, the membrane potential overshoots the resting potentia...

In our previous papers (1, 2), we reported the synthesis of retinoidal 4 ylidenebutenolide (Scheme 1), the method of which involves Wittig reaction of the unstable conjugated anhydride (1) with the acetyl phosphorane (2). Attempts to extend the conjugation by use of the retinoidal 4-ylidenebutenolide (3) or (4) were unfortunately frustrated by the instability of intermediates. In addition, the ...

Species of Flavobacterium are abundant in marine environments, occurring in sea water and sediments as well as in the slime and feces of various fish. The activity of flavobacteria in fish spoilage is not uncommon (Castell and Mapplebeck, 1952). Other than the studies of these latter workers, only the investigations of MacLeod and his associates (MacLeod et al., 1954, 1958) deal, to any extent,...

Jose L. Ochoa, D.U. Hernández-Becerril, S. Lluch-Cota, B.O. Arredondo-Vega, E. NuñezVázquez, A. Heredia-Tapia, J. Pérez-Linares and R. Alonso-Rodríguez 1 Northwest Center for Biological Research (CIBNOR). Box 128, La Paz, BCS., Mexico 23000. E-mail: [email protected] 2 Institute of Marine Sciences and Limnology, UNAM, Box 70-305, México 04510. Introduction Figure 39 summarizes the locations of ...

Culturable enterococci and a suite of environmental variables were collected during a predominantly dry summer at a beach impacted by nonpoint source pollution. These data were used to evaluate sands as a source of enterococci to nearshore waters, and to assess the relationship between environmental factors and dry-weather enterococci abundance. Best-fit multiple linear regressions used environ...

Dinoflagellates are important contributors to the marine phytoplankton and global carbon fixation, but are also infamous for their ability to form the spectacular harmful algal blooms called red tides. While blooms are often associated with high available nitrogen, there are instances where they are observed in oligotrophic environments. In order to maintain their massive population in conditio...

Abstract An operational oceanography forecasting system is established on the base of ROMS and data assimilation method to provide predictions maritime safety applications for Northwest Pacific. After 10 years spun up through integration, reaches a stable field annual circulation. The model was then integrated from 1990 2012 obtain background. evaluation observation data, ocean has been put int...

Tide-induced hydraulic head fluctuation results in significant airflow above the water table if the aquifer is air-confined, for example, if the aquifer is capped by low permeability materials. Hypothetical studies on the interaction between tidal fluctuation and airflow in coastal aquifers are carried out using an air–water two-phase numerical model. The results show that both the amplitude of...